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<?php |
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/** |
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* @link http://www.yiiframework.com/ |
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* @copyright Copyright (c) 2008 Yii Software LLC |
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* @license http://www.yiiframework.com/license/ |
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*/ |
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namespace yii\base; |
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use Yii; |
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/** |
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* Action is the base class for all controller action classes. |
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* |
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* Action provides a way to reuse action method code. An action method in an Action |
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* class can be used in multiple controllers or in different projects. |
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* |
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* Derived classes must implement a method named `run()`. This method |
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* will be invoked by the controller when the action is requested. |
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* The `run()` method can have parameters which will be filled up |
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* with user input values automatically according to their names. |
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* For example, if the `run()` method is declared as follows: |
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* |
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* ```php |
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* public function run($id, $type = 'book') { ... } |
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* ``` |
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* |
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* And the parameters provided for the action are: `['id' => 1]`. |
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* Then the `run()` method will be invoked as `run(1)` automatically. |
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* |
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* For more details and usage information on Action, see the [guide article on actions](guide:structure-controllers). |
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* |
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* @property string $uniqueId The unique ID of this action among the whole application. This property is |
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* read-only. |
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* |
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* @author Qiang Xue <[email protected]> |
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* @since 2.0 |
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*/ |
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class Action extends Component |
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{ |
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/** |
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* @var string ID of the action |
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*/ |
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public $id; |
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/** |
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* @var Controller|\yii\web\Controller the controller that owns this action |
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*/ |
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public $controller; |
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/** |
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* Constructor. |
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* |
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* @param string $id the ID of this action |
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* @param Controller $controller the controller that owns this action |
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* @param array $config name-value pairs that will be used to initialize the object properties |
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*/ |
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public function __construct($id, $controller, $config = []) |
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{ |
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$this->id = $id; |
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$this->controller = $controller; |
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parent::__construct($config); |
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} |
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/** |
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* Returns the unique ID of this action among the whole application. |
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* |
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* @return string the unique ID of this action among the whole application. |
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*/ |
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public function getUniqueId() |
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{ |
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return $this->controller->getUniqueId() . '/' . $this->id; |
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} |
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/** |
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* Runs this action with the specified parameters. |
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* This method is mainly invoked by the controller. |
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* |
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* @param array $params the parameters to be bound to the action's run() method. |
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* @return mixed the result of the action |
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* @throws InvalidConfigException if the action class does not have a run() method |
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*/ |
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public function runWithParams($params) |
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{ |
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if (!method_exists($this, 'run')) { |
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throw new InvalidConfigException(get_class($this) . ' must define a "run()" method.'); |
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} |
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$args = $this->controller->bindActionParams($this, $params); |
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Yii::trace('Running action: ' . get_class($this) . '::run()', __METHOD__); |
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if (Yii::$app->requestedParams === null) { |
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Yii::$app->requestedParams = $args; |
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} |
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if ($this->beforeRun()) { |
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$result = call_user_func_array([$this, 'run'], $args); |
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$this->afterRun(); |
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return $result; |
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} else { |
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return null; |
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} |
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} |
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/** |
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* This method is called right before `run()` is executed. |
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* You may override this method to do preparation work for the action run. |
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* If the method returns false, it will cancel the action. |
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* |
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* @return bool whether to run the action. |
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*/ |
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protected function beforeRun() |
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{ |
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return true; |
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} |
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/** |
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* This method is called right after `run()` is executed. |
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* You may override this method to do post-processing work for the action run. |
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*/ |
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protected function afterRun() |
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{ |
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} |
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} |
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rob006 /
yii2-dev
