API

Starter Kit has fully configured and ready-to-use REST API module. You can access it on http://yii2-starter-kit.localhost/api/v1 For some endpoints you should authenticate your requests with one of available methods - https://github.com/yiisoft/yii2/blob/master/docs/guide/rest-authentication.md#authentication

Timeline (Activity)

$addToTimelineCommand = new AddToTimelineCommand([
    'category' => 'user', 
    'event' => 'signup', 
    'data' => ['foo' => 'bar']
]);
Yii::$app->commandBus->handle($addToTimelineCommand);

I18N

If you want to store application messages in DB and to have ability to edit them from backend, run:

php console/yii message/migrate @common/config/messages/php.php @common/config/messages/db.php

it will copy all existing messages to database

Then uncomment config for DbMessageSource in

common/config/base.php

common\behaviors\LocaleBehavior - discovers user locale from browser's predefined language or account settings

Queue

Basic Queueing component implementation a file based queueing service.

Additional module readme.

Implement Queue class

class DownloadJob extends BaseObject implements \yii\queue\JobInterface
{
    public $url;
    public $file;

    public function execute($queue)
    {
        file_put_contents($this->file, file_get_contents($this->url));
    }
}

Here's how to send a task into queue:

Yii::$app->queue->push(new DownloadJob([
    'url' => 'http://example.com/image.jpg',
    'file' => '/tmp/image.jpg',
]));

Pushes job into queue that run after 5 min:

Yii::$app->queue->delay(5 * 60)->push(new DownloadJob([
    'url' => 'http://example.com/image.jpg',
    'file' => '/tmp/image.jpg',
]));

Command that obtains and executes tasks in a loop until queue is empty:

php ./console/yii  queue/run

Command launches a daemon which infinitely queries the queue:

php ./console/yii queue/listen

See additional documentation for more details about driver console commands and their options.

Key-Value storage

Key storage is a key-value storage to store different information. Application settings for example. Values can be stored both via api or by backend CRUD component.

Yii::$app->keyStorage->set('articles-per-page', 20);
Yii::$app->keyStorage->get('articles-per-page'); // 20

Maintenance mode

Starter kit has built-in component to provide a maintenance functionality. All you have to do is to configure maintenance component in your config

'bootstrap' => ['maintenance'],
...
'components' => [
    ...
    'maintenance' => [
        'class' => 'common\components\maintenance\Maintenance',
        'enabled' => Astronomy::isAFullMoonToday(),
        'statusCode' => ''
    ]
    ...
]

This component will catch all incoming requests, set proper response HTTP headers (503, "Retry After") and show a maintenance message. Additional configuration options can be found in a corresponding class.

Starter kit configured to turn on maintenance mode if frontend.maintenance key in KeyStorage is set to true or APP_MAINTENANCE environment variable set ot 1

Useful behaviors

CacheInvalidateBehavior

 public function behaviors()
 {
     return [
         [
             'class' => `common\behaviors\CacheInvalidateBehavior`,
             'tags' => [
                  'awesomeTag',
                   function($model){
                       return "tag-{$model->id}"
                  }
              ],
             'keys' => [
                  'awesomeKey',
                  function($model){
                      return "key-{$model->id}"
                  }
              ]
         ],
     ];
 }

GlobalAccessBehavior

Allows to set access rules for your application in application config.

'as globalAccess'=>[
        'class'=>'\common\behaviors\GlobalAccessBehavior',
        'rules'=>[
            [
                'controllers'=>['sign-in'],
                'allow' => true,
                'roles' => ['?'],
                'actions'=>['login']
            ],
            [
                'controllers'=>['sign-in'],
                'allow' => true,
                'roles' => ['@'],
                'actions'=>['logout']
            ],
            [
                'controllers'=>['site'],
                'allow' => true,
                'roles' => ['?', '@'],
                'actions'=>['error']
            ],
            [
				'allow' => true,
				'roles' => ['@']
			]
        ]
    ]

It will allow access to you application only for authentificated users.

Command Bus

Read more about command bus on in official repository

Widgets configurable from backend

Carousel

1. Create carousel in backend
2. Use it:

<?php echo DbCarousel::widget(['key' => 'key-from-backend']) ?>

DbText

1. Create text block in backend
2. Use it:

<?php echo DbText::widget(['key' => 'key-from-backend']) ?>

DbMenu

1. Create text block in backend
2. Use it:

<?php echo DbMenu::widget(['key' => 'key-from-backend']) ?>

Widgets

• WYSIWYG Redactor widget
• DateTime picker
• Ace Editor
• File upload
• ElFinder

Grid

EnumColumn

 [
      'class' => '\common\grid\EnumColumn',
      'attribute' => 'status',
      'enum' => User::getStatuses() // [0=>'Deleted', 1=>'Active']
 ]

MultiModel

common\base\MultiModel - class for handling multiple models in one In controller:

$model = new MultiModel([
    'models' => [
        'user' => $userModel,
        'profile' => $userProfileModel
    ]
]);

if ($model->load(Yii::$app->request->post()) && $model->save()) {
    ...
}

In view:

<?php echo $form->field($model->getModel('account'), 'username') ?>

<?php echo $form->field($model->getModel('profile'), 'middlename')->textInput(['maxlength' => 255]) ?>    

Other

• common\behaviors\LoginTimestampBehavior - logs user login time

• common\validators\JsonValidator - validates a value to be a valid json

• common\rbac\rule\OwnModelRule - simple rule for RBAC to check if the current user is model owner

Yii::$app->user->can('editOwnModel', ['model' => $model]);

• common\filters\OwnModelAccessFilter - action filter to check if user is allowed to manage this model

public function behaviors()
    {
        return [
            'modelAccess' => [
                'class' => OwnModelAccessFilter::className(),
                'only' => ['view', 'update', 'delete'],
                'modelCreatedByAttribute' => 'created_by',
                'modelClass' => Article::className()
            ],
        ];
    }