Yii2輸出關係數據

我試圖輸出Yii2中的相關數據。我的輸出代碼看起來像這樣（像我這樣做Yii中1）：Yii2輸出關係數據

foreach ($model->comments as $key => $comment) { 
    echo $comment->title; 
}

，但我得到的錯誤tying to get property on a non-object的$model->comments的var_dump顯示陣列，是什麼樣子的：的

array (size=1) 
    0 => 
    object(common\models\Comment)[74] 
     private '_attributes' (yii\db\BaseActiveRecord) => 
     array (size=5) 
      'id' => int 1 
      'title' => string 'testComment' (length=11) 
      'body' => string 'body' (length=4) 
      'post_id' => int 1 
      'user_id' => int 1 
     private '_oldAttributes' (yii\db\BaseActiveRecord) => 
     array (size=5) 
      'id' => int 1 
      'title' => string 'testComment' (length=11) 
      'body' => string 'body' (length=4) 
      'post_id' => int 1 
      'user_id' => int 1 
     private '_related' (yii\db\BaseActiveRecord) => 
     array (size=0) 
      empty

的var_dump $model->getComments()返回ActiveQuery對象：

object(yii\db\ActiveQuery)[67] 
    public 'sql' => null 
    public 'on' => null 
    public 'joinWith' => null 
    public 'select' => null 
    public 'selectOption' => null 
    public 'distinct' => null 
    public 'from' => null 
    public 'groupBy' => null 
    public 'join' => null 
    public 'having' => null 
    public 'union' => null 
    public 'params' => 
    array (size=0) 
     empty 
    private '_events' (yii\base\Component) => 
    array (size=0) 
     empty 
    private '_behaviors' (yii\base\Component) => 
    array (size=0) 
     empty 
    public 'where' => null 
    public 'limit' => null 
    public 'offset' => null 
    public 'orderBy' => null 
    public 'indexBy' => null 
    public 'modelClass' => string 'common\models\Comment' (length=21) 
    public 'with' => null 
    public 'asArray' => null 
    public 'multiple' => boolean true 
    public 'primaryModel' => 
    object(common\models\Post)[65] 
     private '_attributes' (yii\db\BaseActiveRecord) => 
     array (size=5) 
      'id' => int 1 
      'header' => string 'ds' (length=2) 
      'content' => string 'dsad' (length=4) 
      'created' => string '0000-00-00' (length=10) 
      'status' => int 1 
     private '_oldAttributes' (yii\db\BaseActiveRecord) => 
     array (size=5) 
      'id' => int 1 
      'header' => string 'ds' (length=2) 
      'content' => string 'dsad' (length=4) 
      'created' => string '0000-00-00' (length=10) 
      'status' => int 1 
     private '_related' (yii\db\BaseActiveRecord) => 
     array (size=0) 
      empty 
     private '_errors' (yii\base\Model) => null 
     private '_validators' (yii\base\Model) => null 
     private '_scenario' (yii\base\Model) => string 'default' (length=7) 
     private '_events' (yii\base\Component) => 
     array (size=0) 
      empty 
     private '_behaviors' (yii\base\Component) => 
     array (size=0) 
      empty 
    public 'link' => 
    array (size=1) 
     'post_id' => string 'id' (length=2) 
    public 'via' => null 
    public 'inverseOf' => null

我看到我在這兩種情況下的數據，但我怎樣才能從這種結構收到呢？（和什麼方式$ model-> getComments（）或$ model->評論是賴特？）

來源

2014-10-19 nowiko

你能做一個$ comment的var_dump嗎？ – Barry 2014-10-19 15:42:18

您可以使用$ model-> comments或$ model-> getComments（） - > All（）。 – Barry 2014-10-19 15:46:43

希望你做得很好!!! 你只需要做在你的代碼的小改版將在下文

foreach ($model[0]->comments as $key => $comment) { 
    echo $comment->title; 
}

希望這將使你的一天給出。

來源

2014-10-19 15:37:39

Yii2輸出關係數據

回答

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