如何显示自定义错误消息而不是默认的错误消息 - How to display custom error messages instead of the default ones?

How to display custom error messages instead of the default ones?

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。我的建议将只工作，如果用户或其他用户有相同的课程已经预订。但是现在，如果我的预订等于null，它会显示如下错误信息:

为foreach()提供无效参数

因此，我设置了一个条件，我创建了自己的消息:

很抱歉目前没有推荐书目

，它正在工作。不幸的是，它还与错误消息一起显示。我只想展示我自己的信息。下面是我的代码:

//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,
    ));     
}()

我如何修改它，使它只显示自定义的错误信息?

For Input Fields* Model*

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

也可以调用Function

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

使用这个可以在输入字段

上显示自定义错误消息

For Error Page

为错误页中的自定义消息。

In your Controller

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 */
        }

希望这对你有帮助