Question

我正在使用PHP Yii框架创建一个推荐控制器，使用启发式概念。我的建议仅在用户或具有相同课程的其他用户进行预订时才有效。但是现在如果我的预订等于null，它会显示如下错误消息：

错误500为foreach（）提供的参数无效

因此，我创造了一个条件，我创建了自己的信息：

我们很遗憾目前暂无图书推荐

它正在发挥作用。不幸的是，它还与错误消息一起显示。我只想展示自己的信息。以下是我的代码：

//recommendation - use heuristic concept, more accurate result as more people same course recommendation
public function actionRecommendation() {
    $user = User::model()->findByPk(Yii::app()->user->id);

    //get course mates
    $courseMates = User::model()->findAllByAttributes(array('course_id' => $user->course_id));

    $popularity = array();
    if($bookings==null){Yii::app()->user->setFlash('success', 'We are sorry currently there are no recommendation of books at this moment'); }


    foreach ($courseMates as $courseMate) {
        //identify all bookings made by user
        $bookings = Booking::model()->findAllByAttributes(array('user_id' => $courseMate->id));


        foreach ($bookings as $booking) {
            //add hit into array as per book
            $popularity[$booking->book_id] = (isset($popularity[$booking->book_id])) ? $popularity[$booking->book_id] + 1 : 1;
        }

    }



    //sort according to popular count
    arsort($popularity, SORT_NUMERIC);

    $display = 10;
    foreach ($popularity as $bookId => $popular) {
        //if display is 0, break the foreach, only display up 10
        if ($display == 0) {

            break;
        }

        //create book object array
        $books[] = Book::model()->findByPk($bookId);

        //reduce book count
        $display--;
    }

    $this->render('recommendation',array(
        'books'=>$books,
    ));     
}()

如何修改它以便只显示自定义错误消息？

Answer 1

输入字段 * 在您的模型中 *

array('gender','required','message'=>'Please select gender.'),

或者也可以调用函数。

    array('gender', 'ownFunction'),

    public function ownFunction() {        
      {
        if (empty($this->gender))
           $this->addError("gender", 'Please select gender.');
     }
}

使用此功能，您可以在输入字段上显示自定义错误消息

错误页面

错误页面中的自定义消息。

在您的控制器中

if(Your Condition)
        {
            //Show Error form.
        throw new CHttpException(500,'We are sorry currently there are no recommendation of books at this moment.  ');
        }
        else 
        {
        /* rest of code goes Here */
        }

希望这有助于你

如何显示自定义错误消息而不是默认消息？

1 个答案: