<?php



class TaskController extends Controller

{

	/**

	 * @var string the default layout for the views. Defaults to '//layouts/column2', meaning

	 * using two-column layout. See 'protected/views/layouts/column2.php'.

	 */

	public $layout='//layouts/column2';



	/**

	 * @return array action filters

	 */

	public function filters()

	{

		return array(

			'accessControl', // perform access control for CRUD operations

		);

	}



	/**

	 * Specifies the access control rules.

	 * This method is used by the 'accessControl' filter.

	 * @return array access control rules

	 */

	public function accessRules()

	{

		return array(

			array('allow',  // allow all users to perform 'index' and 'view' actions

				'actions'=>array('index','view'),

				'users'=>array('*'),

			),

			array('allow', // allow authenticated user to perform 'create' and 'update' actions

				'actions'=>array('create','update'),

				'users'=>array('@'),

			),

			array('allow', // allow admin user to perform 'admin' and 'delete' actions

				'actions'=>array('admin','delete'),

				'users'=>array('admin'),

			),

			array('deny',  // deny all users

				'users'=>array('*'),

			),

		);

	}



	/**

	 * Displays a particular model.

	 * @param integer $id the ID of the model to be displayed

	 */

	public function actionView($id)

	{

		$this->render('view',array(

			'model'=>$this->loadModel($id),

		));

	}



	/**

	 * Creates a new model.

	 * If creation is successful, the browser will be redirected to the 'view' page.

	 */

	public function actionCreate()

	{

		$model = new Task;

		$ajax = Yii::app()->request->isAjaxRequest;

		$saved = false;



		// Uncomment the following line if AJAX validation is needed

		$this->performAjaxValidation($model);



		if(isset($_POST['Task']))

		{

			$model->attributes=$_POST['Task'];

			if($model->save()) {

				if($ajax) {

					$saved = $model->getAttributes();

				} else {

					$this->redirect(array('view','id'=>$model->id));

				}

			}

		}



		if($ajax) {

			echo function_exists('json_encode') ? json_encode($saved) : CJSON::encode($saved);

			Yii::app()->end();

		} else {

			$this->render('create',array(

				'model'=>$model,

			));

		}

	}



	/**

	 * Updates a particular model.

	 * If update is successful, the browser will be redirected to the 'view' page.

	 * @param integer $id the ID of the model to be updated

	 */

	public function actionUpdate($id)

	{

		$model=$this->loadModel($id);



		// Uncomment the following line if AJAX validation is needed

		// $this->performAjaxValidation($model);



		if(isset($_POST['Task']))

		{

			$model->attributes=$_POST['Task'];

			if($model->save())

				$this->redirect(array('view','id'=>$model->id));

		}



		$this->render('update',array(

			'model'=>$model,

		));

	}



	/**

	 * Deletes a particular model.

	 * If deletion is successful, the browser will be redirected to the 'admin' page.

	 * @param integer $id the ID of the model to be deleted

	 */

	public function actionDelete($id)

	{

		if(Yii::app()->request->isPostRequest)

		{

			// we only allow deletion via POST request

			$this->loadModel($id)->delete();



			// if AJAX request (triggered by deletion via admin grid view), we should not redirect the browser

			if(!isset($_GET['ajax']))

				$this->redirect(isset($_POST['returnUrl']) ? $_POST['returnUrl'] : array('admin'));

		}

		else

			throw new CHttpException(400,'Invalid request. Please do not repeat this request again.');

	}



	/**

	 * Lists all models.

	 */

	public function actionIndex()

	{

		$dataProvider=new CActiveDataProvider('Task');

		$this->render('index',array(

			'dataProvider'=>$dataProvider,

		));

	}



	/**

	 * Manages all models.

	 */

	public function actionAdmin()

	{

		$model=new Task('search');

		$model->unsetAttributes();  // clear any default values

		if(isset($_GET['Task']))

			$model->attributes=$_GET['Task'];



		$this->render('admin',array(

			'model'=>$model,

		));

	}



	/**

	 * Returns the data model based on the primary key given in the GET variable.

	 * If the data model is not found, an HTTP exception will be raised.

	 * @param integer the ID of the model to be loaded

	 */

	public function loadModel($id)

	{

		$model=Task::model()->findByPk($id);

		if($model===null)

			throw new CHttpException(404,'The requested page does not exist.');

		return $model;

	}



	/**

	 * Performs the AJAX validation.

	 * @param CModel the model to be validated

	 */

	protected function performAjaxValidation($model)

	{

		if(isset($_POST['ajax']) && $_POST['ajax']==='task-form')

		{

			echo CActiveForm::validate($model);

			Yii::app()->end();

		}

	}

}