[tutorial] bagaimana melakukan redirect di nginx

redirect di nginx

Kapan kita melakukan redirect?

Ketika anda punya broken link yang ingin supaya link nya dapat dipakai lagi, semisal karena sudah terindex oleh google. Bisa juga karena web anda sedang maintenance sementara sehingga redirect kehalaman maintenance agar pengunjung dapat info.
Okey… disini saya anggap temen2 sudah tau apa itu file htaccess, karena kita akan langsung kepada intinya. Bagi yang belum mengetahui tentang htaccess bisa baca-baca disini.

Bagaimana caranya?

untuk melakukan redirect di nginx bisa kita lakukan dengan meng-edit file konfigurasi di nginx atau di konfigurasi domain nginx.

  1. pake return (example : return 301 https://example.com$request_uri;)
    server {
        listen 80;
        listen [::]:80;
        hostname example.com www.example.com;
        return 301 https://example.com$request_uri;
    }
  2. pake regex (example : rewrite ^/foo/(bar)/(.*)$ https://$server_name/$1/$2 permanent; )
    server {
        listen 80;
        listen [::]:80;
        hostname example.com www.example.com;
        root /var/www/example.com/public;
        rewrite ^/foo/(bar)/(.*)$ $scheme://$server_name/$1/$2 permanent;
    }
  3. pake map
    include redirect-map.conf;
    server {
        […]
        if ( $redirect_uri ) {
            return 301 $redirect_uri;
        }
    }

    redirect-map.conf isinya …

    map $request_uri $redirect_uri {
        /home.html          /beranda;
        /usman.html         /cakep;
        /ribuantoro.html    /ganteng;
    }
  4. HTTP to HTTPS
    return 301 https://$host$request_uri;
  5. non-www to www
    if ( $host !~ ^www\. ) {
        return 301 $scheme://www.$host$request_uri;
    }
  6. www to non-www
    if ( $host ~ ^www\.(?<domain>.+)$ ) {
        return 301 $scheme://$domain$request_uri;
    }

     

Selain redirect di nginx bisa juga redirect dengan file htaccess namun menggunakan webserver apache. berikut caranya disini
Semoga bermanfaat.

referensi :
nginx official

[compare] Perbedaan dan perbandingan WebSocket vs Socket.io

WebSocket vs socket.io

Apa perbedaan websocket dengan socket.io

Oke pertama kita bahas dulu tentang websocket.
Websocket adalah Protokol komunikasi yang menyediakan komunikasi dua arah antara Klien dan Server melalui koneksi TCP, WebSocket selalu open sepanjang waktu sehingga mereka memungkinkan transfer data real-time.
Ketika klien melakukan request ke Server, koneksi tidak tertutup (closed) saat response diterima, koneksi akan tetap open sampai klien atau server mengakhiri request.

Poin penting pada websocket diantaranya

  • WebSocket membantu komunikasi realtime antara client dan web server.
  • WebSocket membantu komunikasi cross-platform antara client dan web server.
  • WebSocket membantu kebutuhan bisnis di seluruh dunia untuk realtime web aplikasi.
  • WebSocket membantu koneksi pada HTTP dalam komunikasi full duplex
  • WebSocket menghilangkan overhead and mengurangi complexity.
  • WebSocket membuat komunikasi real-time lebih mudah dan efisien.

Skema Protokol WebSocket :

WebSocket vs socket.io

Selanjutnya kita lihat tentang Socket.io
Socket.io adalah library yang memungkinkan komunikasi real-time dan full dupleks antara Klien dan server Web. Ia menggunakan protokol WebSocket sebagai interface nya. Secara umum socket.io dibagi menjadi dua bagian yakni sisi client berupa library yang berjalan di browser dan sisi server berjalan di web server.

Poin penting pada socket.io diantaranya

  • Socket.io dapat melakukan broadcast ke beberapa socket sekaligus dan dapat menangani koneksi secara transparan.
  • Socket.io bekerja di semua platform, server atau device dan meningkatkan kualitas, keandalan, dan kecepatan.
  • Secara otomatis meningkatkan requirement ke WebSocket jika diperlukan.
  • Socket.io mengimplementasikan real-time transport protocol real-time secara custom dibanding protokol lainnya.
  • Socket.io membutuhkan dua library untuk digunakan sisi Klien dan library sisi server.
  • Socket.io berjalan dengan work-based event. ada beberapa event khusus yang dapat diakses menggunakan Socket di sisi server seperti Connect, message, Disconnect, Ping dan Reconnect.
  • Ada beberapa event yang dijalankan khusus oleh Klien seperti Connect, connect- error, connect-timeout and Reconnect
  • Secara teknis Socket.io menangani komunikasi full dupleks secara real time.
  • Socket.io juga menangani ketidakkonsistenan dari browser.
  • Socket.io juga memberikan dukungan fitur tambahan untuk infrastruktur publikasi dasar dan melakukan reconnect secara otomatis.
  • Saat ini, AFAIK adalah yang paling sering digunakan dan lebih mudah untuk membantu dalam pengembangan vanilla web soket.

Websocket VS Socket.io

mari kita lihat perbedaan nya dalam table perbandingan

No.WebSocketSocket.io
1protocol yang tebangun pada koneksi TCPlibrary untuk berjalan dengan WebSocket
2full duplex communication pada koneksi TCPkomunikasi event-based antara browser dan server.
3Proxy dan load balancer tidak didukung di WebSocket.koneksi dapat terbangun walaupun lewat proxi and load balancer.
4.tidak support broadcasting.supports broadcasting.
5.tidak punya a fallback option.supports fallback options.

Kesimpulan nya

Untuk kebutuhan realtime communication socket.io melengkapi websocket dalam praktek pengembangan aplikasinya. Untuk lebih jelasnya silahkan praktekan secara teknis penggunaannya.

referensi : https://educba.com

[tutorial] install free cpanel vps dengan centos web panel (CWP)

install cwp centos web panel

Bismillah – Assalamualaikum wa rohmatullohi wabarokatuh

Bagi temen-temen yang baru migrasi dari shared hosting ke vps tentu agak kaget dalam config web ketika sebelumnya tinggal klik klik dengan cpanel yang memanjakan tiba-tiba berubah menjadi layar hitam dengan text putih manual ngetik command2 bak hacker legendaris mau meretas situs pemerintahan … #eh

sebenarnya banyak sesuatu seperti cpanel hosting dalam mengelola vps bahkan cpanel free alias cpanel gratis atau web panel gratis. yang kita perlukan hanya cara install dan cara pakai nya, salah satu nya adalah CWP atau kepanjangan dari centos web panel.

namanya aja centos berarti ini panel yang berjalan di atas OS linux centos, maka wajib bagi anda install vps dengan OS centos dan minimal centos 6 ya… siip asumsi anda sudah bisa atau mahir dan terbukti sudah menginstall centos di vps anda, bisa di digital ocean atau vultr atau yang lain nya… 

 

Berikut Step by step install centos web panel (CWP) 

  1. download dan install (sekitar 30 menitan)

    cd /usr/local/src
    wget http://centos-webpanel.com/cwp-latest
    sh cwp-latest
    
    jika download link gagal ganti dengan :
    CentOS 6: http://dl1.centos-webpanel.com/files/cwp2-latest
    CentOS 7: http://dl1.centos-webpanel.com/files/cwp-el7-latest
  2. reboot server (agar update)

    reboot
  3. Konfigurasi

    Log in to your CWP server CentOS WebPanel Admin GUI lewat browser
    http://SERVER-IP:2030/
    Username: root
    Password: your root password 
    – Setup nameservers 
    – Setup shared ip (harus IP public anda) 
    – Setup paling tidak 1 hosting paket (atau edit default package) 
    – Setup root email 

    konfigurasi lain nya bisa cek di http://wiki.centos-webpanel.com/
  4. Bingung ?

    Kontak WA 08975835238 atau email ke ztoro@qodrbee.com untuk training.

[tutorial] Bab 9 Cheatsheet Laravel 5.1

Laravel-Cheat-Sheet

Artisan

// Added in 5.1.11:http://laravel.com/docs/5.1/authorization#creating-policies
php artisan make:policy PostPolicy
// Displays help for a given command
php artisan --help OR -h
// Do not output any message
php artisan --quiet OR -q
// Display this application version
php artisan --version OR -V
// Do not ask any interactive question
php artisan --no-interaction OR -n
// Force ANSI output
php artisan --ansi
// Disable ANSI output
php artisan --no-ansi
// The environment the command should run under
php artisan --env
// -v|vv|vvv Increase the verbosity of messages: 1 for normal output, 2 for more verbose output and 3 for debug
php artisan --verbose
// Remove the compiled class file
php artisan clear-compiled
// Display the current framework environment
php artisan env
// Displays help for a command
php artisan help
// Lists commands
php artisan list
// Interact with your application
php artisan tinker
// Put the application into maintenance mode
php artisan down
// Bring the application out of maintenance mode
php artisan up
// Optimize the framework for better performance
// --force    Force the compiled class file to be written.
// --psr      Do not optimize Composer dump-autoload.
php artisan optimize [--force] [--psr]
// Serve the application on the PHP development server
php artisan serve
// Change the default port
php artisan serve --port 8080
// Get it to work outside localhost
php artisan serve --host 0.0.0.0
// Set the application namespace
php artisan app:name namespace
// Flush expired password reset tokens
php artisan auth:clear-resets
// Flush the application cache
php artisan cache:clear
// Create a migration for the cache database table
php artisan cache:table
// Create a cache file for faster configuration loading
php artisan config:cache
// Remove the configuration cache file
php artisan config:clear
// In program
$exitCode = Artisan::call('config:cache');
// Seed the database with records
// --class      The class name of the root seeder (default: "DatabaseSeeder")
// --database   The database connection to seed
// --force      Force the operation to run when in production.
php artisan db:seed [--class[="..."]] [--database[="..."]] [--force]

// Generate the missing events and handlers based on registration
php artisan event:generate

// Create a new command handler class
// --command      The command class the handler handles.
php artisan handler:command [--command="..."] name
// Create a new event handler class
// --event        The event class the handler handles.
// --queued       Indicates the event handler should be queued.
php artisan handler:event [--event="..."] [--queued] name

// Set the application key
php artisan key:generate

// By default, this creates a self-handling command that isn't pushed to the queue.
// Pass this the --handler flag to generate a handler, and the --queued flag to make it queued.
php artisan make:command [--handler] [--queued] name
// Create a new Artisan command
//  --command     The terminal command that should be assigned. (default: "command:name")
make:console [--command[="..."]] name
// Create a new resourceful controller
// --plain      Generate an empty controller class.
php artisan make:controller [--plain] name
php artisan make:controller App\Admin\Http\Controllers\DashboardController
// Create a new event class
php artisan make:event name
// Create a new middleware class
php artisan make:middleware name
// Create a new migration file
// --create     The table to be created.
// --table      The table to migrate.
php artisan make:migration [--create[="..."]] [--table[="..."]] name
// Create a new Eloquent model class
php artisan make:model name
// Create a new service provider class
php artisan make:provider name
// Create a new form request class
php artisan make:request name
// Database migrations
// --database   The database connection to use.
// --force      Force the operation to run when in production.
// --path       The path of migrations files to be executed.
// --pretend    Dump the SQL queries that would be run.
// --seed       Indicates if the seed task should be re-run.
php artisan migrate [--database[="..."]] [--force] [--path[="..."]] [--pretend] [--seed]
// Create the migration repository
php artisan migrate:install [--database[="..."]]
// Create a new migration file
// --seeder     The class name of the root seeder.
php artisan migrate:refresh [--database[="..."]] [--force] [--seed] [--seeder[="..."]]
// Rollback all database migrations
// --pretend    Dump the SQL queries that would be run.
php artisan migrate:reset [--database[="..."]] [--force] [--pretend]
// Rollback the last database migration
php artisan migrate:rollback [--database[="..."]] [--force] [--pretend]
// Show a list of migrations up/down
php artisan migrate:status
// Create a migration for the queue jobs database table
php artisan queue:table
// Listen to a given queue
// --queue      The queue to listen on
// --delay      Amount of time to delay failed jobs (default: 0)
// --memory     The memory limit in megabytes (default: 128)
// --timeout    Seconds a job may run before timing out (default: 60)
// --sleep      Seconds to wait before checking queue for jobs (default: 3)
// --tries      Number of times to attempt a job before logging it failed (default: 0)
php artisan queue:listen [--queue[="..."]] [--delay[="..."]] [--memory[="..."]] [--timeout[="..."]] [--sleep[="..."]] [--tries[="..."]] [connection]
// List all of the failed queue jobs
php artisan queue:failed
// Create a migration for the failed queue jobs database table
php artisan queue:failed-table
// Flush all of the failed queue jobs
php artisan queue:flush
// Delete a failed queue job
php artisan queue:forget
// Restart queue worker daemons after their current job
php artisan queue:restart
// Retry a failed queue job(id: The ID of the failed job)
php artisan queue:retry id
// Subscribe a URL to an Iron.io push queue
// queue: The name of Iron.io queue.
// url: The URL to be subscribed.
// --type       The push type for the queue.
php artisan queue:subscribe [--type[="..."]] queue url
// Process the next job on a queue
// --queue      The queue to listen on
// --daemon     Run the worker in daemon mode
// --delay      Amount of time to delay failed jobs (default: 0)
// --force      Force the worker to run even in maintenance mode
// --memory     The memory limit in megabytes (default: 128)
// --sleep      Number of seconds to sleep when no job is available (default: 3)
// --tries      Number of times to attempt a job before logging it failed (default: 0)
php artisan queue:work [--queue[="..."]] [--daemon] [--delay[="..."]] [--force] [--memory[="..."]] [--sleep[="..."]] [--tries[="..."]] [connection]

// Create a route cache file for faster route registration
php artisan route:cache
// Remove the route cache file
php artisan route:clear
// List all registered routes
php artisan route:list

// Run the scheduled commands
php artisan schedule:run

// Create a migration for the session database table
php artisan session:table

// Publish any publishable assets from vendor packages
// --force        Overwrite any existing files.
// --provider     The service provider that has assets you want to publish.
// --tag          The tag that has assets you want to publish.
php artisan vendor:publish [--force] [--provider[="..."]] [--tag[="..."]]
php artisan tail [--path[="..."]] [--lines[="..."]] [connection]
            

Composer

composer create-project laravel/laravel folder_name
composer install
composer update
composer dump-autoload [--optimize]
composer self-update
composer require [options] [--] [vendor/packages]...
            

Config

Config::get('app.timezone');
//get with Default value
Config::get('app.timezone', 'UTC');
//set Configuration
Config::set('database.default', 'sqlite');
            

Route

Route::get('foo', function(){});
Route::get('foo', 'ControllerName@function');
Route::controller('foo', 'FooController');
            
RESTful Controllers
Route::resource('posts','PostsController');
//Specify a subset of actions to handle on the route
Route::resource('photo', 'PhotoController',['only' => ['index', 'show']]);
Route::resource('photo', 'PhotoController',['except' => ['update', 'destroy']]);
            
Triggering Errors
App::abort(404);
$handler->missing(...) in ErrorServiceProvider::boot();
throw new NotFoundHttpException;
            
Route Parameters
Route::get('foo/{bar}', function($bar){});
Route::get('foo/{bar?}', function($bar = 'bar'){});
            
HTTP Verbs
Route::any('foo', function(){});
Route::post('foo', function(){});
Route::put('foo', function(){});
Route::patch('foo', function(){});
Route::delete('foo', function(){});
// RESTful actions
Route::resource('foo', 'FooController');
// Registering A Route For Multiple Verbs
Route::match(['get', 'post'], '/', function(){});
            
Secure Routes(TBD)
Route::get('foo', array('https', function(){}));
            
Route Constraints
Route::get('foo/{bar}', function($bar){})
->where('bar', '[0-9]+');
Route::get('foo/{bar}/{baz}', function($bar, $baz){})
->where(array('bar' => '[0-9]+', 'baz' => '[A-Za-z]'))
            
// Set a pattern to be used across routes
Route::pattern('bar', '[0-9]+')
            
HTTP Middleware
// Assigning Middleware To Routes
Route::get('admin/profile', ['middleware' => 'auth', function(){}]);
Route::get('admin/profile', function(){})->middleware('auth');
            
Named Routes
Route::currentRouteName();
Route::get('foo/bar', array('as' => 'foobar', function(){}));
Route::get('user/profile', [
'as' => 'profile', 'uses' => 'UserController@showProfile'
]);
Route::get('user/profile', 'UserController@showProfile')->name('profile');
$url = route('profile');
$redirect = redirect()->route('profile');
            
Route Prefixing
Route::group(['prefix' => 'admin'], function()
{
Route::get('users', function(){
    return 'Matches The "/admin/users" URL';
});
});
            
Route Namespacing
// This route group will carry the namespace 'Foo\Bar'
Route::group(array('namespace' => 'Foo\Bar'), function(){})
            
Sub-Domain Routing
// {sub} will be passed to the closure
Route::group(array('domain' => '{sub}.example.com'), function(){});
            

Environment

$environment = app()->environment();
$environment = App::environment();
$environment = $app->environment();
// The environment is local
if ($app->environment('local')){}
// The environment is either local OR staging...
if ($app->environment('local', 'staging')){}
            

Log

// The logger provides the seven logging levels defined in RFC 5424:
// debug, info, notice, warning, error, critical, and alert.
Log::info('info');
Log::info('info',array('context'=>'additional info'));
Log::error('error');
Log::warning('warning');
// get monolog instance
Log::getMonolog();
// add listener
Log::listen(function($level, $message, $context) {});
            
Query Logging
// enable the log
DB::connection()->enableQueryLog();
// get an array of the executed queries
DB::getQueryLog();
            

URL  

URL::full();
URL::current();
URL::previous();
URL::to('foo/bar', $parameters, $secure);
URL::action('NewsController@item', ['id'=>123]);
// need be in appropriate namespace
URL::action('Auth\AuthController@logout');
URL::action('FooController@method', $parameters, $absolute);
URL::route('foo', $parameters, $absolute);
URL::secure('foo/bar', $parameters);
URL::asset('css/foo.css', $secure);
URL::secureAsset('css/foo.css');
URL::isValidUrl('http://example.com');
URL::getRequest();
URL::setRequest($request);
            

Event

Event::fire('foo.bar', array($bar));
// Register an event listener with the dispatcher.
// void listen(string|array $events, mixed $listener, int $priority)
Event::listen('App\Events\UserSignup', function($bar){});
Event::listen('foo.*', function($bar){});
Event::listen('foo.bar', 'FooHandler', 10);
Event::listen('foo.bar', 'BarHandler', 5);
// Stopping The Propagation Of An Event
// You may do so by returning false from your handler.
Event::listen('foor.bar', function($event){ return false; });
Event::subscribe('UserEventHandler');
            

DB

Basic Database Usage
DB::connection('connection_name');
// Running A Select Query
$results = DB::select('select * from users where id = ?', [1]);
$results = DB::select('select * from users where id = :id', ['id' => 1]);
// Running A General Statement
DB::statement('drop table users');
// Listening For Query Events
DB::listen(function($sql, $bindings, $time){ code_here; });
// Database Transactions
DB::transaction(function()
{
DB::table('users')->update(['votes' => 1]);
DB::table('posts')->delete();
});
DB::beginTransaction();
DB::rollBack();
DB::commit();
            
Query Builder
// Retrieving All Rows From A Table
DB::table('name')->get();
// Chunking Results From A Table
DB::table('users')->chunk(100, function($users)
{
foreach ($users as $user)
{
    //
}
});
// Retrieving A Single Row From A Table
$user = DB::table('users')->where('name', 'John')->first();
DB::table('name')->first();
// Retrieving A Single Column From A Row
$name = DB::table('users')->where('name', 'John')->pluck('name');
DB::table('name')->pluck('column');
// Retrieving A List Of Column Values
$roles = DB::table('roles')->lists('title');
$roles = DB::table('roles')->lists('title', 'name');
// Specifying A Select Clause
$users = DB::table('users')->select('name', 'email')->get();
$users = DB::table('users')->distinct()->get();
$users = DB::table('users')->select('name as user_name')->get();
// Adding A Select Clause To An Existing Query
$query = DB::table('users')->select('name');
$users = $query->addSelect('age')->get();
// Using Where Operators
$users = DB::table('users')->where('votes', '>', 100)->get();
$users = DB::table('users')
            ->where('votes', '>', 100)
            ->orWhere('name', 'John')
            ->get();
$users = DB::table('users')
            ->whereBetween('votes', [1, 100])->get();
$users = DB::table('users')
            ->whereNotBetween('votes', [1, 100])->get();
$users = DB::table('users')
            ->whereIn('id', [1, 2, 3])->get();
$users = DB::table('users')
            ->whereNotIn('id', [1, 2, 3])->get();
$users = DB::table('users')
            ->whereNull('updated_at')->get();
DB::table('name')->whereNotNull('column')->get();
// Dynamic Where Clauses
$admin = DB::table('users')->whereId(1)->first();
$john = DB::table('users')
            ->whereIdAndEmail(2, 'john@doe.com')
            ->first();
$jane = DB::table('users')
            ->whereNameOrAge('Jane', 22)
            ->first();
// Order By, Group By, And Having
$users = DB::table('users')
            ->orderBy('name', 'desc')
            ->groupBy('count')
            ->having('count', '>', 100)
            ->get();
DB::table('name')->orderBy('column')->get();
DB::table('name')->orderBy('column','desc')->get();
DB::table('name')->having('count', '>', 100)->get();
// Offset & Limit
$users = DB::table('users')->skip(10)->take(5)->get();
        
Joins
// Basic Join Statement
DB::table('users')
        ->join('contacts', 'users.id', '=', 'contacts.user_id')
        ->join('orders', 'users.id', '=', 'orders.user_id')
        ->select('users.id', 'contacts.phone', 'orders.price')
        ->get();
// Left Join Statement
DB::table('users')
    ->leftJoin('posts', 'users.id', '=', 'posts.user_id')
    ->get();
// select * from users where name = 'John' or (votes > 100 and title <> 'Admin')
DB::table('users')
        ->where('name', '=', 'John')
        ->orWhere(function($query)
        {
            $query->where('votes', '>', 100)
                    ->where('title', '<>', 'Admin');
        })
        ->get();
        
Aggregates
$users = DB::table('users')->count();
$price = DB::table('orders')->max('price');
$price = DB::table('orders')->min('price');
$price = DB::table('orders')->avg('price');
$total = DB::table('users')->sum('votes');
        
Raw Expressions
$users = DB::table('users')
                ->select(DB::raw('count(*) as user_count, status'))
                ->where('status', '<>', 1)
                ->groupBy('status')
                ->get();
// return rows
DB::select('select * from users where id = ?', array('value'));
// return nr affected rows
DB::insert('insert into foo set bar=2');
DB::update('update foo set bar=2');
DB::delete('delete from bar');
// returns void
DB::statement('update foo set bar=2');
// raw expression inside a statement
DB::table('name')->select(DB::raw('count(*) as count, column2'))->get();
        
Inserts / Updates / Deletes / Unions / Pessimistic Locking
// Inserts
DB::table('users')->insert(
['email' => 'john@example.com', 'votes' => 0]
);
$id = DB::table('users')->insertGetId(
['email' => 'john@example.com', 'votes' => 0]
);
DB::table('users')->insert([
['email' => 'taylor@example.com', 'votes' => 0],
['email' => 'dayle@example.com', 'votes' => 0]
]);
// Updates
DB::table('users')
        ->where('id', 1)
        ->update(['votes' => 1]);
DB::table('users')->increment('votes');
DB::table('users')->increment('votes', 5);
DB::table('users')->decrement('votes');
DB::table('users')->decrement('votes', 5);
DB::table('users')->increment('votes', 1, ['name' => 'John']);
// Deletes
DB::table('users')->where('votes', '<', 100)->delete();
DB::table('users')->delete();
DB::table('users')->truncate();
// Unions
// The unionAll() method is also available, and has the same method signature as union.
$first = DB::table('users')->whereNull('first_name');
$users = DB::table('users')->whereNull('last_name')->union($first)->get();
// Pessimistic Locking
DB::table('users')->where('votes', '>', 100)->sharedLock()->get();
DB::table('users')->where('votes', '>', 100)->lockForUpdate()->get();
            

Model

Basic Usage
// Defining An Eloquent Model
class User extends Model {}
// generate Eloquent models
php artisan make:model User
// specify a custom table name
class User extends Model {
protected $table = 'my_users';
}
        
More
Model::create(array('key' => 'value'));
// Find first matching record by attributes or create
Model::firstOrCreate(array('key' => 'value'));
// Find first record by attributes or instantiate
Model::firstOrNew(array('key' => 'value'));
// Create or update a record matching attibutes, and fill with values
Model::updateOrCreate(array('search_key' => 'search_value'), array('key' => 'value'));
// Fill a model with an array of attributes, beware of mass assignment!
Model::fill($attributes);
Model::destroy(1);
Model::all();
Model::find(1);
// Find using dual primary key
Model::find(array('first', 'last'));
// Throw an exception if the lookup fails
Model::findOrFail(1);
// Find using dual primary key and throw exception if the lookup fails
Model::findOrFail(array('first', 'last'));
Model::where('foo', '=', 'bar')->get();
Model::where('foo', '=', 'bar')->first();
Model::where('foo', '=', 'bar')->exists();
// dynamic
Model::whereFoo('bar')->first();
// Throw an exception if the lookup fails
Model::where('foo', '=', 'bar')->firstOrFail();
Model::where('foo', '=', 'bar')->count();
Model::where('foo', '=', 'bar')->delete();
//Output raw query
Model::where('foo', '=', 'bar')->toSql();
Model::whereRaw('foo = bar and cars = 2', array(20))->get();
Model::on('connection-name')->find(1);
Model::with('relation')->get();
Model::all()->take(10);
Model::all()->skip(10);
// Default Eloquent sort is ascendant
Model::all()->orderBy('column');
Model::all()->orderBy('column','desc');
            
Soft Delete
Model::withTrashed()->where('cars', 2)->get();
// Include the soft deleted models in the results
Model::withTrashed()->where('cars', 2)->restore();
Model::where('cars', 2)->forceDelete();
// Force the result set to only included soft deletes
Model::onlyTrashed()->where('cars', 2)->get();
            
Relationships
// One To One - User::phone()
return $this->hasOne('App\Phone', 'foreign_key', 'local_key');
// One To One - Phone::user(), The Inverse Of The Relation
return $this->belongsTo('App\User', 'foreign_key', 'other_key');

// One To Many - Post::comments()
return $this->hasMany('App\Comment', 'foreign_key', 'local_key');
//  One To Many - Comment::post()
return $this->belongsTo('App\Post', 'foreign_key', 'other_key');

// Many To Many - User::roles();
return $this->belongsToMany('App\Role', 'user_roles', 'user_id', 'role_id');
// Many To Many - Role::users();
return $this->belongsToMany('App\User');
// Many To Many - Retrieving Intermediate Table Columns
$role->pivot->created_at;
// Many To Many - Pivot table with extra attributes
return $this->belongsToMany('App\Role')->withPivot('column1', 'column2');
// Many To Many - Automatically maintained created_at and updated_at timestamps
return $this->belongsToMany('App\Role')->withTimestamps();

// Has Many Through - Country::posts(), A Country model have
// many Post models through an intermediate User model (User::country_id)
return $this->hasManyThrough('App\Post', 'App\User', 'country_id', 'user_id');

// Polymorphic Relations - Photo::imageable()
return $this->morphTo();
// Polymorphic Relations - Staff::photos()
return $this->morphMany('App\Photo', 'imageable');
// Polymorphic Relations - Product::photos()
return $this->morphMany('App\Photo', 'imageable');
// Polymorphic Relations - Register the morphMap in your AppServiceProvider
Relation::morphMap([
    'Post' => App\Post::class,
    'Comment' => App\Comment::class,
]);

// Many To Many Polymorphic Relations - Tables: posts,videos,tags,taggables
// Post::tags()
return $this->morphToMany('App\Tag', 'taggable');
// Video::tags()
return $this->morphToMany('App\Tag', 'taggable');
// Tag::posts()
return $this->morphedByMany('App\Post', 'taggable');
// Tag::videos()
return $this->morphedByMany('App\Video', 'taggable');

// Querying Relations
$user->posts()->where('active', 1)->get();
// Retrieve all posts that have at least one comment...
$posts = App\Post::has('comments')->get();
// Retrieve all posts that have three or more comments...
$posts = Post::has('comments', '>=', 3)->get();
// Retrieve all posts that have at least one comment with votes...
$posts = Post::has('comments.votes')->get();
// Retrieve all posts with at least one comment containing words like foo%
$posts = Post::whereHas('comments', function ($query) {
    $query->where('content', 'like', 'foo%');
})->get();

// Eager Loading
$books = App\Book::with('author')->get();
$books = App\Book::with('author', 'publisher')->get();
$books = App\Book::with('author.contacts')->get();

// Lazy Eager Loading
$books->load('author', 'publisher');

// Inserting Related Models
$comment = new App\Comment(['message' => 'A new comment.']);
$post->comments()->save($comment);
// save multiple related models
$post->comments()->saveMany([
    new App\Comment(['message' => 'A new comment.']),
    new App\Comment(['message' => 'Another comment.']),
]);
$post->comments()->create(['message' => 'A new comment.']);

// Updating a belongsTo relationship
$user->account()->associate($account);
$user->save();
$user->account()->dissociate();
$user->save();

// Inserting Related Models - Many To Many Relationships
$user->roles()->attach($roleId);
$user->roles()->attach($roleId, ['expires' => $expires]);
// Detach a single role from the user...
$user->roles()->detach($roleId);
// Detach all roles from the user...
$user->roles()->detach();
$user->roles()->detach([1, 2, 3]);
$user->roles()->attach([1 => ['expires' => $expires], 2, 3]);

// Any IDs that are not in the given array will be removed from the intermediate table.
$user->roles()->sync([1, 2, 3]);
// You may also pass additional intermediate table values with the IDs:
$user->roles()->sync([1 => ['expires' => true], 2, 3]);

            
Events
Model::creating(function($model){});
Model::created(function($model){});
Model::updating(function($model){});
Model::updated(function($model){});
Model::saving(function($model){});
Model::saved(function($model){});
Model::deleting(function($model){});
Model::deleted(function($model){});
Model::observe(new FooObserver);
            
Eloquent Configuration
// Disables mass assignment exceptions from being thrown from model inserts and updates
Eloquent::unguard();
// Renables any ability to throw mass assignment exceptions
Eloquent::reguard();
            

Pagination

// Auto-Magic Pagination
Model::paginate(15);
Model::where('cars', 2)->paginate(15);
// "Next" and "Previous" only
Model::where('cars', 2)->simplePaginate(15);
// Manual Paginator
Paginator::make($items, $totalItems, $perPage);
// Print page navigators in view
$variable->links();
            

Lang

App::setLocale('en');
Lang::get('messages.welcome');
Lang::get('messages.welcome', array('foo' => 'Bar'));
Lang::has('messages.welcome');
Lang::choice('messages.apples', 10);
// Lang::get alias
trans('messages.welcome');
            

File

File::exists('path');
File::get('path');
File::getRemote('path');
// Get a file's contents by requiring it
File::getRequire('path');
// Require the given file once
File::requireOnce('path');
// Write the contents of a file
File::put('path', 'contents');
// Append to a file
File::append('path', 'data');
// Delete the file at a given path
File::delete('path');
// Move a file to a new location
File::move('path', 'target');
// Copy a file to a new location
File::copy('path', 'target');
// Extract the file extension from a file path
File::extension('path');
// Get the file type of a given file
File::type('path');
// Get the file size of a given file
File::size('path');
// Get the file's last modification time
File::lastModified('path');
// Determine if the given path is a directory
File::isDirectory('directory');
// Determine if the given path is writable
File::isWritable('path');
// Determine if the given path is a file
File::isFile('file');
// Find path names matching a given pattern.
File::glob($patterns, $flag);
// Get an array of all files in a directory.
File::files('directory');
// Get all of the files from the given directory (recursive).
File::allFiles('directory');
// Get all of the directories within a given directory.
File::directories('directory');
// Create a directory
File::makeDirectory('path',  $mode = 0777, $recursive = false);
// Copy a directory from one location to another
File::copyDirectory('directory', 'destination', $options = null);
// Recursively delete a directory
File::deleteDirectory('directory', $preserve = false);
// Empty the specified directory of all files and folders
File::cleanDirectory('directory');
            

UnitTest

Install and run
// add to composer and update:
"phpunit/phpunit": "4.0.*"
// run tests (from project root)
./vendor/bin/phpunit
            
Asserts
$this->assertTrue(true);
$this->assertEquals('foo', $bar);
$this->assertCount(1,$times);
$this->assertResponseOk();
$this->assertResponseStatus(403);
$this->assertRedirectedTo('foo');
$this->assertRedirectedToRoute('route.name');
$this->assertRedirectedToAction('Controller@method');
$this->assertViewHas('name');
$this->assertViewHas('age', $value);
$this->assertSessionHasErrors();
// Asserting the session has errors for a given key...
$this->assertSessionHasErrors('name');
// Asserting the session has errors for several keys...
$this->assertSessionHasErrors(array('name', 'age'));
$this->assertHasOldInput();
            
Calling routes
$response = $this->call($method, $uri, $parameters, $files, $server, $content);
$response = $this->callSecure('GET', 'foo/bar');
$this->session(['foo' => 'bar']);
$this->flushSession();
$this->seed();
$this->seed($connection);
            

SSH

Executing Commands
SSH::run(array $commands);
SSH::into($remote)->run(array $commands); // specify remote, otherwise assumes default
SSH::run(array $commands, function($line)
{
echo $line.PHP_EOL;
});
            
Tasks
// define
SSH::define($taskName, array $commands);
// execute
SSH::task($taskName, function($line)
{
echo $line.PHP_EOL;
});
            
SFTP Uploads
SSH::put($localFile, $remotePath);
SSH::putString($string, $remotePath);
            

Schema

// Indicate that the table needs to be created
Schema::create('table', function($table)
{
$table->increments('id');
});
// Specify a Connection
Schema::connection('foo')->create('table', function($table){});
// Rename the table to a given name
Schema::rename($from, $to);
// Indicate that the table should be dropped
Schema::drop('table');
// Indicate that the table should be dropped if it exists
Schema::dropIfExists('table');
// Determine if the given table exists
Schema::hasTable('table');
// Determine if the given table has a given column
Schema::hasColumn('table', 'column');
// Update an existing table
Schema::table('table', function($table){});
// Indicate that the given columns should be renamed
$table->renameColumn('from', 'to');
// Indicate that the given columns should be dropped
$table->dropColumn(string|array);
// The storage engine that should be used for the table
$table->engine = 'InnoDB';
// Only work on MySQL
$table->string('name')->after('email');
            
Indexes
$table->string('column')->unique();
$table->primary('column');
// Creates a dual primary key
$table->primary(array('first', 'last'));
$table->unique('column');
$table->unique('column', 'key_name');
// Creates a dual unique index
$table->unique(array('first', 'last'));
$table->unique(array('first', 'last'), 'key_name');
$table->index('column');
$table->index('column', 'key_name');
// Creates a dual index
$table->index(array('first', 'last'));
$table->index(array('first', 'last'), 'key_name');
$table->dropPrimary(array('column'));
$table->dropPrimary('table_column_primary');
$table->dropUnique(array('column'));
$table->dropUnique('table_column_unique');
$table->dropIndex(array('column'));
$table->dropIndex('table_column_index');
            
Foreign Keys
$table->foreign('user_id')->references('id')->on('users');
$table->foreign('user_id')->references('id')->on('users')->onDelete('cascade'|'restrict'|'set null'|'no action');
$table->foreign('user_id')->references('id')->on('users')->onUpdate('cascade'|'restrict'|'set null'|'no action');
$table->dropForeign(array('user_id'));
$table->dropForeign('posts_user_id_foreign');
            
Column Types
// Increments
$table->increments('id');
$table->bigIncrements('id');

// Numbers
$table->integer('votes');
$table->tinyInteger('votes');
$table->smallInteger('votes');
$table->mediumInteger('votes');
$table->bigInteger('votes');
$table->float('amount');
$table->double('column', 15, 8);
$table->decimal('amount', 5, 2);

//String and Text
$table->char('name', 4);
$table->string('email');
$table->string('name', 100);
$table->text('description');
$table->mediumText('description');
$table->longText('description');

//Date and Time
$table->date('created_at');
$table->dateTime('created_at');
$table->time('sunrise');
$table->timestamp('added_on');
// Adds created_at and updated_at columns
$table->timestamps();
$table->nullableTimestamps();

// Others
$table->binary('data');
$table->boolean('confirmed');
// Adds deleted_at column for soft deletes
$table->softDeletes();
$table->enum('choices', array('foo', 'bar'));
// Adds remember_token as VARCHAR(100) NULL
$table->rememberToken();
// Adds INTEGER parent_id and STRING parent_type
$table->morphs('parent');
->nullable()
->default($value)
->unsigned()
            

Input

Input::get('key');
// Default if the key is missing
Input::get('key', 'default');
Input::has('key');
Input::all();
// Only retrieve 'foo' and 'bar' when getting input
Input::only('foo', 'bar');
// Disregard 'foo' when getting input
Input::except('foo');
Input::flush();
            
Session Input (flash)
// Flash input to the session
Input::flash();
// Flash only some of the input to the session
Input::flashOnly('foo', 'bar');
// Flash only some of the input to the session
Input::flashExcept('foo', 'baz');
// Retrieve an old input item
Input::old('key','default_value');
            
Files
// Use a file that's been uploaded
Input::file('filename');
// Determine if a file was uploaded
Input::hasFile('filename');
// Access file properties
Input::file('name')->getRealPath();
Input::file('name')->getClientOriginalName();
Input::file('name')->getClientOriginalExtension();
Input::file('name')->getSize();
Input::file('name')->getMimeType();
// Move an uploaded file
Input::file('name')->move($destinationPath);
// Move an uploaded file
Input::file('name')->move($destinationPath, $fileName);
            

Cache

Cache::put('key', 'value', $minutes);
Cache::add('key', 'value', $minutes);
Cache::forever('key', 'value');
Cache::remember('key', $minutes, function(){ return 'value' });
Cache::rememberForever('key', function(){ return 'value' });
Cache::forget('key');
Cache::has('key');
Cache::get('key');
Cache::get('key', 'default');
Cache::get('key', function(){ return 'default'; });
Cache::tags('my-tag')->put('key','value', $minutes);
Cache::tags('my-tag')->has('key');
Cache::tags('my-tag')->get('key');
Cache::tags('my-tag')->forget('key');
Cache::tags('my-tag')->flush();
Cache::increment('key');
Cache::increment('key', $amount);
Cache::decrement('key');
Cache::decrement('key', $amount);
Cache::section('group')->put('key', $value);
Cache::section('group')->get('key');
Cache::section('group')->flush();
            

Cookie

Cookie::get('key');
Cookie::get('key', 'default');
// Create a cookie that lasts for ever
Cookie::forever('key', 'value');
// Create a cookie that lasts N minutes
Cookie::make('key', 'value', 'minutes');
// Set a cookie before a response has been created
Cookie::queue('key', 'value', 'minutes');
// Forget cookie
Cookie::forget('key');
// Send a cookie with a response
$response = Response::make('Hello World');
// Add a cookie to the response
$response->withCookie(Cookie::make('name', 'value', $minutes));
            

Session

Session::get('key');
// Returns an item from the session
Session::get('key', 'default');
Session::get('key', function(){ return 'default'; });
// Get the session ID
Session::getId();
// Put a key / value pair in the session
Session::put('key', 'value');
// Push a value into an array in the session
Session::push('foo.bar','value');
// Returns all items from the session
Session::all();
// Checks if an item is defined
Session::has('key');
// Remove an item from the session
Session::forget('key');
// Remove all of the items from the session
Session::flush();
// Generate a new session identifier
Session::regenerate();
// Flash a key / value pair to the session
Session::flash('key', 'value');
// Reflash all of the session flash data
Session::reflash();
// Reflash a subset of the current flash data
Session::keep(array('key1', 'key2'));
            

Request

// url: http://xx.com/aa/bb
Request::url();
// path: /aa/bb
Request::path();
// getRequestUri: /aa/bb/?c=d
Request::getRequestUri();
// Returns user's IP
Request::ip();
// getUri: http://xx.com/aa/bb/?c=d
Request::getUri();
// getQueryString: c=d
Request::getQueryString();
// Get the port scheme of the request (e.g., 80, 443, etc.)
Request::getPort();
// Determine if the current request URI matches a pattern
Request::is('foo/*');
// Get a segment from the URI (1 based index)
Request::segment(1);
// Retrieve a header from the request
Request::header('Content-Type');
// Retrieve a server variable from the request
Request::server('PATH_INFO');
// Determine if the request is the result of an AJAX call
Request::ajax();
// Determine if the request is over HTTPS
Request::secure();
// Get the request method
Request::method();
// Checks if the request method is of specified type
Request::isMethod('post');
// Get raw POST data
Request::instance()->getContent();
// Get requested response format
Request::format();
// true if HTTP Content-Type header contains */json
Request::isJson();
// true if HTTP Accept header is application/json
Request::wantsJson();

            

Response

return Response::make($contents);
return Response::make($contents, 200);
return Response::json(array('key' => 'value'));
return Response::json(array('key' => 'value'))
->setCallback(Input::get('callback'));
return Response::download($filepath);
return Response::download($filepath, $filename, $headers);
// Create a response and modify a header value
$response = Response::make($contents, 200);
$response->header('Content-Type', 'application/json');
return $response;
// Attach a cookie to a response
return Response::make($content)
->withCookie(Cookie::make('key', 'value'));
            

Redirect

return Redirect::to('foo/bar');
return Redirect::to('foo/bar')->with('key', 'value');
return Redirect::to('foo/bar')->withInput(Input::get());
return Redirect::to('foo/bar')->withInput(Input::except('password'));
return Redirect::to('foo/bar')->withErrors($validator);
// Create a new redirect response to the previous location
return Redirect::back();
// Create a new redirect response to a named route
return Redirect::route('foobar');
return Redirect::route('foobar', array('value'));
return Redirect::route('foobar', array('key' => 'value'));
// Create a new redirect response to a controller action
return Redirect::action('FooController@index');
return Redirect::action('FooController@baz', array('value'));
return Redirect::action('FooController@baz', array('key' => 'value'));
// If intended redirect is not defined, defaults to foo/bar.
return Redirect::intended('foo/bar');
            

Container

App::bind('foo', function($app){ return new Foo; });
App::make('foo');
// If this class exists, it's returned
App::make('FooBar');
// Register a shared binding in the container
App::singleton('foo', function(){ return new Foo; });
// Register an existing instance as shared in the container
App::instance('foo', new Foo);
// Register a binding with the container
App::bind('FooRepositoryInterface', 'BarRepository');
// Register a service provider with the application
App::register('FooServiceProvider');
// Listen for object resolution
App::resolving(function($object){});
            

Security

Hashing
Hash::make('secretpassword');
Hash::check('secretpassword', $hashedPassword);
Hash::needsRehash($hashedPassword);
            
Encryption
Crypt::encrypt('secretstring');
Crypt::decrypt($encryptedString);
Crypt::setMode('ctr');
Crypt::setCipher($cipher);
            

Auth

Authentication
// Determine if the current user is authenticated
Auth::check();
// Get the currently authenticated user
Auth::user();
// Get the ID of the currently authenticated user
Auth::id();
// Attempt to authenticate a user using the given credentials
Auth::attempt(array('email' => $email, 'password' => $password));
// 'Remember me' by passing true to Auth::attempt()
Auth::attempt($credentials, true);
// Log in for a single request
Auth::once($credentials);
// Log a user into the application
Auth::login(User::find(1));
// Log the given user ID into the application
Auth::loginUsingId(1);
// Log the user out of the application
Auth::logout();
// Validate a user's credentials
Auth::validate($credentials);
// Attempt to authenticate using HTTP Basic Auth
Auth::basic('username');
// Perform a stateless HTTP Basic login attempt
Auth::onceBasic();
// Send a password reminder to a user
Password::remind($credentials, function($message, $user){});
            
Authorization
// Define abilities
Gate::define('update-post', 'Class@method');
Gate::define('update-post', function ($user, $post) {...});
// Passing multiple argument
Gate::define('delete-comment', function ($user, $post, $comment) {});

// Check abilities
Gate::denies('update-post', $post);
Gate::allows('update-post', $post);
Gate::check('update-post', $post);
// Specified a user for checking
Gate::forUser($user)->allows('update-post', $post);
// Through User model, using Authorizable trait
User::find(1)->can('update-post', $post);
User::find(1)->cannot('update-post', $post);

// Intercepting Authorization Checks
Gate::before(function ($user, $ability) {});
Gate::after(function ($user, $ability) {});

// Chekcing in Blade template
@can('update-post', $post)
@endcan
// with else
@can('update-post', $post)
@else
@endcan

// Generate a Policy
php artisan make:policy PostPolicy
// `policy` helper function
policy($post)->update($user, $post)

// Controller Authorization
$this->authorize('update', $post);
// for $user
$this->authorizeForUser($user, 'update', $post);

                    

Mail

Mail::send('email.view', $data, function($message){});
Mail::send(array('html.view', 'text.view'), $data, $callback);
Mail::queue('email.view', $data, function($message){});
Mail::queueOn('queue-name', 'email.view', $data, $callback);
Mail::later(5, 'email.view', $data, function($message){});
// Write all email to logs instead of sending
Mail::pretend();
            
Messages
// These can be used on the $message instance passed into Mail::send() or Mail::queue()
$message->from('email@example.com', 'Mr. Example');
$message->sender('email@example.com', 'Mr. Example');
$message->returnPath('email@example.com');
$message->to('email@example.com', 'Mr. Example');
$message->cc('email@example.com', 'Mr. Example');
$message->bcc('email@example.com', 'Mr. Example');
$message->replyTo('email@example.com', 'Mr. Example');
$message->subject('Welcome to the Jungle');
$message->priority(2);
$message->attach('foo\bar.txt', $options);
// This uses in-memory data as attachments
$message->attachData('bar', 'Data Name', $options);
// Embed a file in the message and get the CID
$message->embed('foo\bar.txt');
$message->embedData('foo', 'Data Name', $options);
// Get the underlying Swift Message instance
$message->getSwiftMessage();
            

Queue

Queue::push('SendMail', array('message' => $message));
Queue::push('SendEmail@send', array('message' => $message));
Queue::push(function($job) use $id {});
// Same payload to multiple workers
Queue::bulk(array('SendEmail', 'NotifyUser'), $payload);
// Starting the queue listener
php artisan queue:listen
php artisan queue:listen connection
php artisan queue:listen --timeout=60
// Process only the first job on the queue
php artisan queue:work
// Start a queue worker in daemon mode
php artisan queue:work --daemon
// Create migration file for failed jobs
php artisan queue:failed-table
// Listing failed jobs
php artisan queue:failed
// Delete failed job by id
php artisan queue:forget 5
// Delete all failed jobs
php artisan queue:flush
            

Validation

Validator::make(
array('key' => 'Foo'),
array('key' => 'required|in:Foo')
);
Validator::extend('foo', function($attribute, $value, $params){});
Validator::extend('foo', 'FooValidator@validate');
Validator::resolver(function($translator, $data, $rules, $msgs)
{
return new FooValidator($translator, $data, $rules, $msgs);
});
            
Rules
accepted
active_url
after:YYYY-MM-DD
before:YYYY-MM-DD
alpha
alpha_dash
alpha_num
array
between:1,10
confirmed
date
date_format:YYYY-MM-DD
different:fieldname
digits:value
digits_between:min,max
boolean
email
exists:table,column
image
in:foo,bar,...
not_in:foo,bar,...
integer
numeric
ip
max:value
min:value
mimes:jpeg,png
regex:[0-9]
required
required_if:field,value
required_with:foo,bar,...
required_with_all:foo,bar,...
required_without:foo,bar,...
required_without_all:foo,bar,...
same:field
size:value
timezone
unique:table,column,except,idColumn
url

            

View

View::make('path/to/view');
View::make('foo/bar')->with('key', 'value');
View::make('foo/bar')->withKey('value');
View::make('foo/bar', array('key' => 'value'));
View::exists('foo/bar');
// Share a value across all views
View::share('key', 'value');
// Nesting views
View::make('foo/bar')->nest('name', 'foo/baz', $data);
// Register a view composer
View::composer('viewname', function($view){});
//Register multiple views to a composer
View::composer(array('view1', 'view2'), function($view){});
// Register a composer class
View::composer('viewname', 'FooComposer');
View::creator('viewname', function($view){});
            

Blade

// Show a section in a template
@yield('name')
@extends('layout.name')
// Begin a section
@section('name')
// End a section
@stop
// End a section and yield
@section('sidebar')
@show
@parent

@include('view.name')
@include('view.name', array('key' => 'value'));
@lang('messages.name')
@choice('messages.name', 1);

@if
@else
@elseif
@endif

@unless
@endunless

@for
@endfor

@foreach
@endforeach

@while
@endwhile

//forelse 4.2 feature
@forelse($users as $user)
@empty
@endforelse

// Echo content
{{ $var }}
// Echo escaped content
{{{ $var }}}
// Echo unescaped content; 5.0 feature
{!! $var !!}
{{-- Blade Comment --}}
// Echoing Data After Checking For Existence
{{{ $name or 'Default' }}}
// Displaying Raw Text With Curly Braces
@{{ This will not be processed by Blade }}
            

Form

Form::open(array('url' => 'foo/bar', 'method' => 'PUT'));
Form::open(array('route' => 'foo.bar'));
Form::open(array('route' => array('foo.bar', $parameter)));
Form::open(array('action' => 'FooController@method'));
Form::open(array('action' => array('FooController@method', $parameter)));
Form::open(array('url' => 'foo/bar', 'files' => true));
Form::close();
Form::token();
Form::model($foo, array('route' => array('foo.bar', $foo->bar)));

            
Form Elements
Form::label('id', 'Description');
Form::label('id', 'Description', array('class' => 'foo'));
Form::text('name');
Form::text('name', $value);
Form::text('name', $value, array('class' => 'name'));
Form::textarea('name');
Form::textarea('name', $value);
Form::textarea('name', $value, array('class' => 'name'));
Form::hidden('foo', $value);
Form::password('password');
Form::password('password', array('placeholder' => 'Password'));
Form::email('name', $value, array());
Form::file('name', array('class' => 'name'));
Form::checkbox('name', 'value');
// Generating a checkbox that is checked
Form::checkbox('name', 'value', true, array('class' => 'name'));
Form::radio('name', 'value');
// Generating a radio input that is selected
Form::radio('name', 'value', true, array('class' => 'name'));
Form::select('name', array('key' => 'value'));
Form::select('name', array('key' => 'value'), 'key', array('class' => 'name'));
Form::selectRange('range', 1, 10);
Form::selectYear('year', 2011, 2015);
Form::selectMonth('month');
Form::submit('Submit!', array('class' => 'name'));
Form::button('name', array('class' => 'name'));
Form::macro('fooField', function()
{
return '<input type="custom"/>';
});
Form::fooField();
            

HTML

HTML::macro('name', function(){});
// Convert an HTML string to entities
HTML::entities($value);
// Convert entities to HTML characters
HTML::decode($value);
// Generate a link to a JavaScript file
HTML::script($url, $attributes);
// Generate a link to a CSS file
HTML::style($url, $attributes);
// Generate an HTML image element
HTML::image($url, $alt, $attributes);
// Generate a HTML link
HTML::link($url, 'title', $attributes, $secure);
// Generate a HTTPS HTML link
HTML::secureLink($url, 'title', $attributes);
// Generate a HTML link to an asset
HTML::linkAsset($url, 'title', $attributes, $secure);
// Generate a HTTPS HTML link to an asset
HTML::linkSecureAsset($url, 'title', $attributes);
// Generate a HTML link to a named route
HTML::linkRoute($name, 'title', $parameters, $attributes);
// Generate a HTML link to a controller action
HTML::linkAction($action, 'title', $parameters, $attributes);
// Generate a HTML link to an email address
HTML::mailto($email, 'title', $attributes);
// Obfuscate an e-mail address to prevent spam-bots from sniffing it
HTML::email($email);
// Generate an ordered list of items
HTML::ol($list, $attributes);
// Generate an un-ordered list of items
HTML::ul($list, $attributes);
// Create a listing HTML element
HTML::listing($type, $list, $attributes);
// Create the HTML for a listing element
HTML::listingElement($key, $type, $value);
// Create the HTML for a nested listing attribute
HTML::nestedListing($key, $type, $value);
// Build an HTML attribute string from an array
HTML::attributes($attributes);
// Build a single attribute element
HTML::attributeElement($key, $value);
// Obfuscate a string to prevent spam-bots from sniffing it
HTML::obfuscate($value);
            

String

// Transliterate a UTF-8 value to ASCII
Str::ascii($value)
Str::camel($value)
Str::contains($haystack, $needle)
Str::endsWith($haystack, $needles)
// Cap a string with a single instance of a given value.
Str::finish($value, $cap)
Str::is($pattern, $value)
Str::length($value)
Str::limit($value, $limit = 100, $end = '...')
Str::lower($value)
Str::words($value, $words = 100, $end = '...')
Str::plural($value, $count = 2)
// Generate a more truly "random" alpha-numeric string.
Str::random($length = 16)
// Generate a "random" alpha-numeric string.
Str::quickRandom($length = 16)
Str::upper($value)
Str::title($value)
Str::singular($value)
Str::slug($title, $separator = '-')
Str::snake($value, $delimiter = '_')
Str::startsWith($haystack, $needles)
// Convert a value to studly caps case.
Str::studly($value)
Str::macro($name, $macro)
            

Helper

Arrays
// adds a given key / value pair to the array if the
// given key doesn't already exist in the array
array_add($array, 'key', 'value');
// collapse an array of arrays into a single array
array_collapse($array);
// Divide an array into two arrays. One with keys and the other with values
array_divide($array);
// Flatten a multi-dimensional associative array with dots
array_dot($array);
// Get all of the given array except for a specified array of items
array_except($array, array('key'));
// Return the first element in an array passing a given truth test
array_first($array, function($key, $value){}, $default);
// Strips keys from the array
array_flatten($array);
// Remove one or many array items from a given array using "dot" notation
array_forget($array, 'foo');
// Dot notation
array_forget($array, 'foo.bar');
// Get an item from an array using "dot" notation
array_get($array, 'foo', 'default');
array_get($array, 'foo.bar', 'default');
// Checks that a given item exists in an array using "dot" notation
array_has($array, 'products.desk');
// Get a subset of the items from the given array
array_only($array, array('key'));
// Return array of key => values
array_pluck($array, 'key');
// Return and remove 'key' from array
array_pull($array, 'key');
// Set an array item to a given value using "dot" notation
array_set($array, 'key', 'value');
// Dot notation
array_set($array, 'key.subkey', 'value');
// Sorts the array by the results of the given Closure
array_sort($array, function(){});
// Recursively sorts the array using the sort function
array_sort_recursive();
// Filters the array using the given Closure
array_where();
// First element of an array
head($array);
// Last element of an array
last($array);
            
Paths
// Fully qualified path to the app directory
app_path();
// Get the path to the public folder
base_path();
// Fully qualified path to the application configuration directory
config_path();
// Fully qualified path to the application's database directory
database_path();
// Gets the path to the versioned Elixir file:
elixir();
// Fully qualified path to the public directory
public_path();
// Get the path to the storage folder
storage_path();
            
Strings
// Convert a value to camel case
camel_case($value);
// Get the class "basename" of the given object / class
class_basename($class);
// Escape a string
e('<html>');
// Determine if a given string starts with a given substring
starts_with('Foo bar.', 'Foo');
// Determine if a given string ends with a given substring
ends_with('Foo bar.', 'bar.');
// Convert a string to snake case
snake_case('fooBar');
// Limits the number of characters in a string
str_limit();
// Determine if a given string contains a given substring
str_contains('Hello foo bar.', 'foo');
// Result: foo/bar/
str_finish('foo/bar', '/');
str_is('foo*', 'foobar');
str_plural('car');
str_random(25);
str_singular('cars');
str_slug("Laravel 5 Framework", "-");
// Result: FooBar
studly_case('foo_bar');
trans('foo.bar');
trans_choice('foo.bar', $count);
            
URLs and Links
action('FooController@method', $parameters);
// HTML Link
asset('img/photo.jpg', $title, $attributes);
// HTTPS link
secure_asset('img/photo.jpg', $title, $attributes);
route($route, $parameters, $absolute = true);
url('path', $parameters = array(), $secure = null);
            
Miscellaneous
// Authenticator instance (Auth)
auth()->user();
// Generates a redirect response to the user's previous location
back();
// Hashes the given value using Bcrypt (Hash)
bcrypt('my-secret-password');
// Creates a collection instance from the supplied items
collect(['taylor', 'abigail']);
// Gets the value of a configuration variable
config('app.timezone', $default);
// Generates an HTML hidden input field containing the value of the CSRF token
{!! csrf_field() !!}
// Retrieves the value of the current CSRF token
$token = csrf_token();
// Dumps the given variable and ends execution of the script
dd($value);
// Gets the value of an environment variable or returns a default value
$env = env('APP_ENV');
$env = env('APP_ENV', 'production');
// Dispatches the given event to its listeners:
event(new UserRegistered($user));
// Creates a model factory builder for a given class
$user = factory(App\User::class)->make();
// Generates an HTML hidden input field containing the spoofed value of the form's HTTP verb
{!! method_field('delete') !!}
// Retrieves an old input value flashed into the session
$value = old('value');
$value = old('value', 'default');
// Returns an instance of the redirector to do redirects:
return redirect('/home');
// Returns the current request instance or obtains an input item
$value = request('key', $default = null)
// Creates a response instance or obtains an instance of the response factory
return response('Hello World', 200, $headers);
// Used to get / set a session value
$value = session('key');
$value = session()->get('key');
session()->put('key', $value);
// Will simply return the value it is given.
value(function(){ return 'bar'; });
// Retrieves a view instance
return view('auth.login');
// Returns the value it is given
$value = with(new Foo)->work();
            

Collection

// Creating Collections
collect([1, 2, 3]);
// Simply returns the underlying array represented by the collection:
$collection->all();
// Returns the average of all items in the collection:
$collection->avg();
// Breaks the collection into multiple, smaller collections of a given size:
$collection->chunk(4);
// Collapses a collection of arrays into a flat collection:
$collection->collapse();
// Determines whether the collection contains a given item:
$collection->contains('New York');
// Returns the total number of items in the collection:
$collection->count();
// Iterates over the items in the collection and passes each item to a given callback:
$collection = $collection->each(function ($item, $key) {
});
// Creates a new collection consisting of every n-th element:
$collection->every(4);
// Pass offset as the second argument:
$collection->every(4, 1);
// Returns all items in the collection except for those with the specified keys:
$collection->except(['price', 'discount']);
// Filters the collection by a given callback:
$filtered = $collection->filter(function ($item) {
    return $item > 2;
});
// Returns the first element in the collection that passes a given truth test:
collect([1, 2, 3, 4])->first(function ($key, $value) {
    return $value > 2;
});
// Flattens a multi-dimensional collection into a single dimension:
$flattened = $collection->flatten();
// Swaps the collection's keys with their corresponding values:
$flipped = $collection->flip();
// Removes an item from the collection by its key:
$collection->forget('name');
// Returns a new collection containing the items:
$chunk = $collection->forPage(2, 3);
// Returns the item at a given key. If the key does not exist, null is returned:
$value = $collection->get('name');
// Groups the collection's items by a given key:
$grouped = $collection->groupBy('account_id');
// Determines if a given key exists in the collection:
$collection->has('email');
// Joins the items in a collection:
$collection->implode('product', ', ');
// Removes any values that are not present in the given array or collection:
$intersect = $collection->intersect(['Desk', 'Chair', 'Bookcase']);
// Returns true if the collection is empty:
collect([])->isEmpty();
// Keys the collection by the given key:
$keyed = $collection->keyBy('product_id');
// Pass a callback, which should return the value to key the collection by:
$keyed = $collection->keyBy(function ($item) {
    return strtoupper($item['product_id']);
});
// Returns all of the collection's keys:
$keys = $collection->keys();
// Returns the last element in the collection:
$collection->last();
// Iterates through the collection and passes each value to the given callback:
$multiplied = $collection->map(function ($item, $key) {
    return $item * 2;
});
// Return the maximum value of a given key:
$max = collect([['foo' => 10], ['foo' => 20]])->max('foo');
$max = collect([1, 2, 3, 4, 5])->max();
// Merges the given array into the collection:
$merged = $collection->merge(['price' => 100, 'discount' => false]);
// Return the minimum value of a given key:
$min = collect([['foo' => 10], ['foo' => 20]])->min('foo');
$min = collect([1, 2, 3, 4, 5])->min();
// Returns the items in the collection with the specified keys:
$filtered = $collection->only(['product_id', 'name']);
// Retrieves all of the collection values for a given key:
$plucked = $collection->pluck('name');
// Removes and returns the last item from the collection:
$collection->pop();
// Adds an item to the beginning of the collection:
$collection->prepend(0);
// Pass a second argument to set the key of the prepended item:
$collection->prepend(0, 'zero');
// Removes and returns an item from the collection by its key:
$collection->pull('name');
// Appends an item to the end of the collection:
$collection->push(5);
// Sets the given key and value in the collection:
$collection->put('price', 100);
// Returns a random item from the collection:
$collection->random();
// Pass an integer to random. If that integer is more than 1, a collection of items is returned:
$random = $collection->random(3);
// Reduces the collection to a single value:
$total = $collection->reduce(function ($carry, $item) {
    return $carry + $item;
});
// Filters the collection using the given callback:
$filtered = $collection->reject(function ($item) {
    return $item > 2;
});
// Reverses the order of the collection's items:
$reversed = $collection->reverse();
// Searches the collection for the given value and returns its key if found:
$collection->search(4);
// Removes and returns the first item from the collection:
$collection->shift();
// Randomly shuffles the items in the collection:
$shuffled = $collection->shuffle();
// Returns a slice of the collection starting at the given index:
$slice = $collection->slice(4);
// Sorts the collection:
$sorted = $collection->sort();
// Sorts the collection by the given key:
$sorted = $collection->sortBy('price');
// Removes and returns a slice of items starting at the specified index:
$chunk = $collection->splice(2);
// Returns the sum of all items in the collection:
collect([1, 2, 3, 4, 5])->sum();
// Returns a new collection with the specified number of items:
$chunk = $collection->take(3);
// Converts the collection into a plain PHP array:
$collection->toArray();
// Converts the collection into JSON:
$collection->toJson();
// Iterates over the collection:
$collection->transform(function ($item, $key) {
    return $item * 2;
});
// Returns all of the unique items in the collection:
$unique = $collection->unique();
// Returns a new collection with the keys reset to consecutive integers:
$values = $collection->values();
// Filters the collection by a given key / value pair:
$filtered = $collection->where('price', 100);
// Merges together the values of the given array with the values of the collection:
$zipped = $collection->zip([100, 200]);
                

referensi : https://summerblue.github.io

 

[solved] Bagaimana cek element html visible di screen dengan jQuery

Check Visibility element viewport or Checking if an element is visible on-screen using jQuery

How to Check an Element is Visible or not Using jQuery?

untuk dapat mengecek apakah element terlihat di layar atau tidak bisa menggunakan jQuery library Element Onscreen Visibility dari om Matthew yang dapat anda download di sini.
ingat ini ngecek apakah muncul di layar saat ini, bukan yang tidak muncul di layar… semisal page nya panjang ke bawah dan ada yang tertutupi maka element yg tertutupi di bawah akan bernilai false.

how to use

result akan bernilai true jika element visible (kelihatan) oleh mata user.

$('#element').visible();

result akan bernilai true jika bagian dari element visible (kelihatan) oleh mata user.

$('#element').visible( true );

Secara default plugin ini akan mengabaikan element dengan css seperti , display:none, visibility: hidden, offsetWidth or offsetHeight is 0 . untuk memfilter css visibility, Anda bisa gunakan  jQuery :visible selector

$('#element:visible').visible();

Sebagai tambahan, anda bisa meanmbah parameter ke dua  yang akan memeriksa apakah elemen visible, serta apakah itu ada dalam viewport (pandangan user) juga.

$('#element:visible').visible( false, true );

Tambahan lagi.. Anda bisa menambah parameter ke tiga untuk menentukan arah ketika memeriksa visibilitas. bisa ‘horisontal’, ‘vertikal atau both. Secara default both.

$('#element').visible( false, false, 'horizontal' );

supaya lebih paham silahkan lihat demo ini. check visibility element viewport
lihat juga demo implementasi yang ada di qodrbee pada bagian daftar isi

[solved] bagaimana cara redirect dengan file htaccess ?

kapan perlu redirect ?

Ketika anda punya broken link yang ingin supaya link nya  dapat dipakai lagi, semisal karena sudah terindex oleh google. Bisa juga karena web anda sedang maintenance sementara sehingga redirect kehalaman maintenance agar pengunjung dapat info.
Okey… disini saya anggap temen2 sudah tau apa itu file htaccess, karena kita akan langsung kepada intinya. Bagi yang belum mengetahui tentang htaccess bisa baca-baca disini.

persiapan

pertama kita buat dulu file .htaccess lalu taruh di root directory web kita atau folder yang membutuhkan, misal kalau menggunakan wordpress file .htaccess sejajar dengan folder wp-content wp-include dll. lalu file .htaccess itu akan kita isi dengan script untuk redirect. berikut macam-macam cara redirect dengan file .htaccess

301 (Permanent) Redirect

Redirect seluruh URL website ke URL  yang berbeda secara permanent. Contohnya kita redirect ke domain qodrbee.com

# This allows you to redirect your entire website to any other domain
Redirect 301 / http://qodrbee.com/

 

302 (Temporary) Redirect

Redirect seluruh URL website ke URL  yang berbeda secara sementara. Ini berguna untuk tujuan SEO ketika anda punya landing page sementara dan berencana nanti akan kembali ke landing page utama. Contohnya kita redirect ke domain qodrbee.com

# This allows you to redirect your entire website to any other domain
Redirect 302 / http://qodrbee.com/

 

Redirect index.html ke specific subfolder

# This allows you to redirect index.html to a specific subfolder
Redirect /index.html http://qodrbee.com/newdirectory/

 

Redirect file lama ke file baru

# Redirect old file path to new file path
Redirect /olddirectory/oldfile.html http://qodrbee.com/newdirectory/newfile.html

 

Redirect ke specific index page

# Provide Specific Index Page (Set the default handler)
DirectoryIndex index.html

 

Redirect non-www ke www .htaccess

RewriteCond %{HTTP_HOST} ^qodrbee.com [NC]
RewriteRule ^(.*)$ http://www.qodrbee.com/$1 [L,R=301]

 

Redirect www ke non-www .htaccess

RewriteCond %{HTTP_HOST} ^www.domainanda.com [NC]
RewriteRule ^(.*)$ http://domainanda.com/$1 [L,R=301]

 

Redirect seluruh website ke website lain

RewriteCond %{HTTP_HOST} ^domainlama.com [NC,OR]
RewriteCond %{HTTP_HOST} ^www.domainlama.com [NC]
RewriteRule ^(.*)$ http://domainbaru.com/$1 [L,R=301,NC]

 

Redirect Url Direktori ke Halaman Utama

RedirectMatch 301 /blog/(.*) https://wwqodrbeew.idsysadmin.com/$1
RedirectMatch ^/$ https://www.qodrbee.com/blog

selain dengan file .htaccess redirect juga bisa dilakukan dengan setting config nginx

DevOps Expert | Haproxy – High Performance Load Balancer Server

haproxy load balancer server

Kapan Anda harus menggunakan Haproxy?

Ketika ribuan pengguna mengakses situs atau aplikasi web ataupun sejenisnya pada waktu bersamaan, sehingga trafic yang tinggi yang membuat server anda overload (down) karena tidak dapat menampung request yang diterima, maka haproxy dapat menjadi solusi bagi anda.

Bayangkan kalo anda cuma punya 1 server yang dipakai untuk menangani semua request yg sudah terlanjut buanyaaak bgt… disisi lain spec server sudah mentok g bisa di upgrade lagi. sudah tidak memungkinkan untuk vertical scaling. maka sudah saat nya untuk melakukan horisontal scaling. yap… dengan Haproxy kita dapat membuat horisontal scaling untuk menghajar mengatasi trafic yang tinggi.

Teknik ini dikenal dengan load balancing. Jadi load balancing adalah teknik untuk melakukan distribusi beban trafik pada dua atau lebih jalur koneksi secara seimbang sehingga setiap jalur koneksi akan menerima beban trafik yang sama. yap begitulah cara kerja load balancing.

Apa itu Haproxy?

HAProxy adalah project open source dibawah GPLv2 license. Haproxy atau kepanjangan dari High Availability Proxy adalah loadbalancer TCP/IP dan proxy server yang dapat membagi beban request yang datang kepada multi node server. sehingga beban server akan dibagi kepada node server yang ada.

Pembagian beban nya pun bermacam-macam cara ada yang sama rata, ada yang berdasarkan beban trafic dan lain nya. akan kita pelajari algoritma pembagian beban request  ini selanjutnya. Jadi haproxy ini adalah perantara antara client/user dengan server (web/database/dll) sehingga disebut juga dengan haproxy reverse proxy.

Haproxy tidak hanya bisa untuk web load balancing namun juga yang lain seperti smtp load balancing atau mysql load balancing.

Bagaimana cara kerja Haproxy?

Load balance pada web server dapat dilakukan dengan 2 macam yaitu pada Layer 4 (transport layer) dan Layer 7 (application layer). Layer 4 lebih sederhana karena pembagian hanya berdasarkan range IP dan port. Pada layer 7 pembagian lebih kompleks sampai pembagian trafic berdasarkan url tertentu, dsb.

User akan mengirimkan request kepada load balancer (haproxy) kemudian diteruskan (forward) ke node (web server) lain. Teknik load balancing yang sering digunakan adalah roundrobin dan least connection. RoundRobin adalah cara yang menganggap bahwa semua beban server sama, jadi setiap server yang ada di akses secara bergantian dan berurutan, sedangkan Least Connection hanya mengalihkan beban ke server yang dianggap kosong atau trafficnya rendah.

di dalam haproxy terdapat 2 bagian (side) yakni frontend dan backend. koneksi yang datang dari user akan di terima oleh bagian frontend untuk di olah/filter sesuai rule frontend, jika lolos maka paket di lanjutkan ke backend untuk di oleh/filter sesuai rule backend selanjutnya akan di putuskan untuk kirim ke node tertentu sesuai strategi yang di pakai backend. Jadi frontend hanya mengurusi client/users dan backend mengurusi node server.
haproxy ada 2 mode dalam operasinya yakni HTTP close mode dan HTTP keep-alive mode.

Mengapa harus Haproxy?

Sebenarnya untuk melakukan load balancing trafic pada server ada beberapa alternative lain seperti Nginx, LVS / IPVS, varnish, dll. Namun haproxy memang khusus dibuat untuk keperluan ini, mature, reliable dan high performance. Disamping dia mempunyai fitur-fitur pendukung lain tentunya.

Haproxy hanya menggunakan 15% dari processing time penggunaan CPU dengan HTTP close mode dan sekitar 30% jika menggunakan HTTP keep-alive mode. Itu artinya secara global haproxy mempunyai impact yang besar dalam performa namun kecil dalam penggunaan resource.

Dengan load balancing maka yang akan menerima request tidak hanya 1 server, sehingga mempercepat waktu response sebuah web. 1 web server dapat menerima banyak request, sedangkan 1 server biasanya kita memiliki 1 web server, bayangkan saja jika kita mempunyai 3 dan masing – masing server mempunyai 1 web server maka waktu response sebuah web akan meningkat 3 kali lipat. Kesimpulan nya dengan haproxy dapat mempercepat waktu reponse sebuah web (fast response).

Karena adanya server yang lebih dari 1, hal ini memungkinkan ketika salah 1 server mati request tetap dapat di layani dengan server lain. jadi lebih reliable.

Ada beberapa variasi dalam penggunaannya haproxy diantaranya ada yang berfokus pada bandwidth, atau berdasarkan request rate, atau koneksi yang konkuren, atau pada kinerja SSL. Fitur-fitur yang ada disediakan untuk membantu tugas haproxy dalam mengendalikan trafic. Contohnya nanti akan kita bahas dalam haproxy configuration.

Fitur Basic

Proxying : menjembatani koneksi dari client dan server.
SSL : haproxy ssl support secure sockets layer (https)
Monitoring : termonitor secara terus menerus dan tercatat
High availibility : walaupun 1 atau beberapa web server mati masih tetap terkoneksi
Load balancing : beban trafik yang terbagi sama rata atau sama rasa
Stickiness : aliran data/paket yang melekat pada aturan/rule yang di setting
Sampling and converting information : pengelompokan dan rekap data dari paket yang lewat
Map : membuat simple rule untuk setting frontend dan backend
ACLs dan Conditions : haproxy acl mengatur trafic dengan rule dan condition
Stick-tables
Formatted strings
HTTP rewriting and redirection
Server protection
Logging : terdapat haproxy log file untuk maintenance
Statistics : data statistic untuk monitoring trafic

Fitur Advance

Management
System-specific capabilities
Scripting : HAProxy support Lua embedded language

Persiapan Installasi dan Konfigurasi

Kali ini kita akan gunakan 3 server  VPS dengan OS terinstall ubuntu 18.04
1 server sebagai load balancer dengan haproxy
2 server sebagai web server dengan nginx

server haproxy kita beri nama haproxy.qodrbee.com
web server kita beri nama web1.qodrbee.com dan web2.qodrbee.com
berikut konfigurasinya :

haproxy.qodrbee.com

ip public : 10.20.30.40 open port 80 # terhubung ke internet/user
ip private : 192.168.1.1/24 #terhubung dengan private web server

web1.qodrbee.com

ip private : 192.168.1.2/24 #terhubung dengan haproxy.qodrbee.com

web2.qodrbee.com

ip private : 192.168.1.3/24 #terhubung dengan haproxy.qodrbee.com

persiapan haproxy load balancer server

okey itu tadi adalah persiapan kita (persiapan mental dan kesabaran :v) sebelum memulai instalasi dan konfigurasi haproxy.
Selanjutnya kita coffe break dulu agar kembali fresh dan fokus. 10menit…
10.. 9.. 8.. 7.. 6.. 5.. 4.. 3.. 2.. 1..
oke break habis kita lanjutkan tahap instalasi dan konfigurasi.

kalau sudah sampai sini anda wajib share tulisan ini.
agar (banyak pengunjung di web saya) manfaatnya lebih tersebar ke yang lain.

tanpa basa bali klik disini untuk menuju babak baru dalam haproxy.
HAProxy installation and configuration
jeng jeng jeng…..

Referensi :

How to Native Image Lazy Loading for Web

Native Lazy Loading Image for Web

native lazyload image for web

yess… native lazy load image for web. coba lihat script di atas… ada attribut loading pada tag img. Selama ini kita kalo mau melakukan lazy loading kita pake plugin kan? jQuery kan? … nah ini nih ada cara native loh…
dan ini berlaku untuk tag img dan iframe.

loading attribute ini akan bekerja ketika halaman di scroll ke img atau frame yang memakai loading ini. loading support 3 value :

  1. lazy: ini untuk lazy loading.
  2. eager: load langsung.
  3. auto: browser yang akan menentukan lazy load atau tidak.

jika tidak ada attribute loading maka dianggap auto. Berikut adalah contoh script nya..

<!-- Lazy-load an offscreen image when the user scrolls near it -->
<img src="unicorn.jpg" loading="lazy" alt=".."/>

<!-- Load an image right away instead of lazy-loading -->
<img src="unicorn.jpg" loading="eager" alt=".."/>

<!-- Browser decides whether or not to lazy-load the image -->
<img src="unicorn.jpg" loading="auto" alt=".."/>

<!-- Lazy-load images in <picture>. <img> is the one driving image 
loading so <picture> and srcset fall off of that -->
<picture>
  <source media="(min-width: 40em)" srcset="big.jpg 1x, big-hd.jpg 2x">
  <source srcset="small.jpg 1x, small-hd.jpg 2x">
  <img src="fallback.jpg" loading="lazy">
</picture>

<!-- Lazy-load an image that has srcset specified -->
<img src="small.jpg"
     srcset="large.jpg 1024w, medium.jpg 640w, small.jpg 320w"
     sizes="(min-width: 36em) 33.3vw, 100vw"
     alt="A rad wolf" loading="lazy">

<!-- Lazy-load an offscreen iframe when the user scrolls near it -->
<iframe src="video-player.html" loading="lazy"></iframe>

dan tahukan saudara-saudara bahwa fitur ini direncanakan akan support di chrome 75. itu kata bang Addy Osmani sebagai Engineering Manager at Google working on Chrome. Jadi sabar saja ya… tunggu tanggal main nya di qodrbee ya. cheers… ;p

referensi  https://addyosmani.com/blog/lazy-loading/

[Penjurusan] Silabus School of Startup

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[Hipster] Silabus School of Startup

  • Penjurusan 1bulan
    • Pengenalan diri
    • Deteksi Minat & bakat
  • Hustler9bulan
    • Leadership
    • Visioner
    • Ide Kreatif
    • Pitching
    • Networking
    • Manajemen & Keuangan
    • Marketing
  • Hipster 9bulan
    • Intro UI/UX Design
    • UX Design 3bulan
      • Dasar-Dasar UX Design
      • Design Sprint
      • Persona atau Customer Segmentation
      • Prototyping
      • User Research
      • UX Parameter
      • Simplicity
      • Addictive App
      • Behavioral Economics
      • Ideation
    • UI Design 3bulan
      • Research
      • Sketch & Wireframe
      • Design & Prototyping
      • Usability Testing
      • Evaluate
      • Implementation
    • StartUp Case 3bulan
  • Hacker 9bulan
    • Frontend Dev 2bulan
      • HTML
      • CSS
      • JS
      • ReactJS
    • Backend Dev 2bulan
      • Algoritma & Pemrograman
      • PHP & OOP
      • Database
      • PHP Framework
    • Mobile Dev 2bulan
      • React Native
    • StartUp Case 3bulan