public function actionCreate()
    {
        $model = new Post();
        $model->time = date("Y-m-d H:i:s");	
        $model->author_id = Yii::$app->user->id;
        $model->isdel = 0;

        if (Yii::$app->request->post())        
        {
			$post = Yii::$app->request->post();									
			$category = [];						
			if (isset($post['Post']['category']))
			{
				$category = $post['Post']['category'];
			}		
			
			if (is_array($post['Post']['tags']))
			{
				$post['Post']['tags'] = implode(",",$post['Post']['tags']);
			}		
				
			$model->load($post);
			
			$transaction = Yii::$app->db->beginTransaction();
			try {				
				
				if ($model->save()) {
					
					$cs = BlogCatPos::deleteAll("post_id = :id",["id"=>$model->id]);
					
					foreach ($category as $d)
					{
						$c = new BlogCatPos();						
						$c->post_id = $model->id;
						$c->category_id = $d;
						$c->isdel = 0;					
						$c->save();								
					}
									
					$transaction->commit();                                    				
					return $this->redirect(['view', 'id' => $model->id]);            
				}				
				else
				{
					$model->id = array_merge($category,[]);	
					$transaction->rollBack();					
				}				
			} catch (Exception $e) {
				$transaction->rollBack();				
			}   						
		}	
        
        return $this->render('create', [
			'model' => $model,
		]);
    }