MessageController.php

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<?php

class MessageController extends Controller
{
    public $layout='//layouts/column2';

    public function filters()
    {
        return array(
            'accessControl', // perform access control for CRUD operations
            'postOnly + delete', // we only allow deletion via POST request
        );
    }

    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('*'),
            ),
        );
    }

    public function actionView($id)
    {
        $this->render('view',array(
            'model'=>$this->loadModel($id),
        ));
    }

    public function actionCreate()
    {
        $model=new Message;

        // Uncomment the following line if AJAX validation is needed
        // $this->performAjaxValidation($model);

        if(isset($_POST['Message']))
        {
            $model->attributes=$_POST['Message'];
            if($model->save())
                $this->redirect(array('view','id'=>$model->id));
        }

        $this->render('create',array(
            'model'=>$model,
        ));
    }

    public function actionUpdate($id)
    {
        $model=$this->loadModel($id);

        // Uncomment the following line if AJAX validation is needed
        // $this->performAjaxValidation($model);

        if(isset($_POST['Message']))
        {
            $model->attributes=$_POST['Message'];
            if($model->save())
                $this->redirect(array('view','id'=>$model->id));
        }

        $this->render('update',array(
            'model'=>$model,
        ));
    }

    public function actionDelete($id)
    {
        $this->loadModel($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'));
    }

    public function actionIndex()
    {
        $dataProvider=new CActiveDataProvider('Message');
        $this->render('index',array(
            'dataProvider'=>$dataProvider,
        ));
    }

    public function actionAdmin()
    {
        $model=new Message('search');
        $model->unsetAttributes();  // clear any default values
        if(isset($_GET['Message']))
            $model->attributes=$_GET['Message'];

        $this->render('admin',array(
            'model'=>$model,
        ));
    }

    public function loadModel($id)
    {
        $model=Message::model()->findByPk($id);
        if($model===null)
            throw new CHttpException(404,'The requested page does not exist.');
        return $model;
    }

    protected function performAjaxValidation($model)
    {
        if(isset($_POST['ajax']) && $_POST['ajax']==='message-form')
        {
            echo CActiveForm::validate($model);
            Yii::app()->end();
        }
    }
}