1

我正在尝试通过属于该相册的图像显示指向相册/视图的链接。我有我的模型“相册”，并且与我的“照片”模型有关系，它代表保存图片的表格（或者更准确的图片名称，图片保存在“上传”文件夹中：

public function relations()
{
        return array(
                    'photos' => array(self::HAS_MANY, 'Photo', 'album_id'),
    );
}

现在我正在显示专辑/索引视图，我在其中解析包含我所有专辑的 $dataProvider 对象。现在 $dataProvider 被解析为_view视图，我正在尝试访问属于显示的每个相册的图片（实际上我只需要每个相册一张图片）。该图片将代表一个相册/视图视图的链接，在该视图中人们可以看到属于该相册的所有图片。我不知道该怎么做。我试过：

CHtml::link(
                    CHtml::image(Yii::app()->request->baseUrl."/uploads/thumbs/".$data->photos->name),
                    array('view', 'id'=>$data->id));

我得到了错误：尝试获取非对象的属性

PS：我在相册/视图视图中显示一个相册中的所有图片没有问题（但是这些交叉控制器，交叉表无论什么事情都让我很难过）。我有嵌套的照片/索引视图，图片显示如下：

echo CHtml::link(
                    CHtml::image(Yii::app()->request->baseUrl."/uploads/thumbs/".$data->name),
                    Yii::app()->request->baseUrl."/uploads/".$data->name ),

（作为链接，我正在显示图像的缩略图，这就是为什么我有“/uploads/thumbs/”。“名称”是表中的列，代表图像的文件名）

编辑 1

@Stu

在我的相册中，我有三张照片：

array (size=3)
  0 => 
    object(Photo)[84]
      private '_uploads' => null
      private '_new' (CActiveRecord) => boolean false
      private '_attributes' (CActiveRecord) => 
        array (size=6)
          'id' => string '1' (length=1)
          'album_id' => string '1' (length=1)
          'name' => string 'WP_20140907_18_34_12_Pro.jpg' (length=28)
          'caption' => string 'Balerina' (length=8)
          'date_created' => string '2014-10-27 19:56:13' (length=19)
          'date_updated' => null
      private '_related' (CActiveRecord) => 
        array (size=0)
          empty
      private '_c' (CActiveRecord) => null
      private '_pk' (CActiveRecord) => string '1' (length=1)
      private '_alias' (CActiveRecord) => string 't' (length=1)
      private '_errors' (CModel) => 
        array (size=0)
          empty
      private '_validators' (CModel) => null
      private '_scenario' (CModel) => string 'update' (length=6)
      private '_e' (CComponent) => null
      private '_m' (CComponent) => null
  1 => 
    object(Photo)[85]
      private '_uploads' => null
      private '_new' (CActiveRecord) => boolean false
      private '_attributes' (CActiveRecord) => 
        array (size=6)
          'id' => string '2' (length=1)
          'album_id' => string '1' (length=1)
          'name' => string 'WP_20140907_18_49_33_Pro.jpg' (length=28)
          'caption' => string '' (length=0)
          'date_created' => string '2014-10-27 19:56:45' (length=19)
          'date_updated' => null
      private '_related' (CActiveRecord) => 
        array (size=0)
          empty
      private '_c' (CActiveRecord) => null
      private '_pk' (CActiveRecord) => string '2' (length=1)
      private '_alias' (CActiveRecord) => string 't' (length=1)
      private '_errors' (CModel) => 
        array (size=0)
          empty
      private '_validators' (CModel) => null
      private '_scenario' (CModel) => string 'update' (length=6)
      private '_e' (CComponent) => null
      private '_m' (CComponent) => null
  2 => 
    object(Photo)[86]
      private '_uploads' => null
      private '_new' (CActiveRecord) => boolean false
      private '_attributes' (CActiveRecord) => 
        array (size=6)
          'id' => string '3' (length=1)
          'album_id' => string '1' (length=1)
          'name' => string 'WP_20140907_18_49_38_Pro.jpg' (length=28)
          'caption' => string '' (length=0)
          'date_created' => string '2014-10-27 20:00:41' (length=19)
          'date_updated' => null
      private '_related' (CActiveRecord) => 
        array (size=0)
          empty
      private '_c' (CActiveRecord) => null
      private '_pk' (CActiveRecord) => string '3' (length=1)
      private '_alias' (CActiveRecord) => string 't' (length=1)
      private '_errors' (CModel) => 
        array (size=0)
          empty
      private '_validators' (CModel) => null
      private '_scenario' (CModel) => string 'update' (length=6)
      private '_e' (CComponent) => null
      private '_m' (CComponent) => null

编辑 2

这真的让我发疯......在同一个专辑模型中，我与其他表“用户”有其他关系：

public function relations()
    {
        return array(
            'owner' => array(self::BELONGS_TO, 'User', 'owner_id'),
            ...
        );
    }

而且我在专辑视图中访问用户模型中的属性没有问题，检查了 var_dump($data->owner)：

object(User)[83]
  public 'passSave' => null
  public 'passRepeat' => null
  private '_new' (CActiveRecord) => boolean false
  private '_attributes' (CActiveRecord) => 
    array (size=7)
      'id' => string '1' (length=1)
      'email' => string 'fdhghhg@gmail.com' (length=25)
      'username' => string 'admin' (length=5)
      'firstname' => string 'Emina' (length=5)
      'lastname' => string 'Hasanović' (length=10)
      'pass' => string 'sa1aY64JOY94w' (length=13)
      'date_created' => string '2014-10-27 11:20:55' (length=19)
  private '_related' (CActiveRecord) => 
    array (size=0)
      empty
  private '_c' (CActiveRecord) => null
  private '_pk' (CActiveRecord) => string '1' (length=1)
  private '_alias' (CActiveRecord) => string 't' (length=1)
  private '_errors' (CModel) => 
    array (size=0)
      empty
  private '_validators' (CModel) => null
  private '_scenario' (CModel) => string 'update' (length=6)
  private '_e' (CComponent) => null
  private '_m' (CComponent) => null

它与 var_dump($data->lastPhoto) 的输出完全相同（只是具有它自己的属性），但是当我尝试使用 $data->lastPhoto->name 时，它​​正在尝试获取 non-object 的属性，而 $data- >owner->username 效果很好

编辑 3

这是我的专辑模型：

<?php

/**
 * This is the model class for table "album".
 *
 * The followings are the available columns in table 'album':
 * @property string $id
 * @property string $name
 * @property string $owner_id
 * @property integer $shareable
 * @property string $date_created
 *
 * The followings are the available model relations:
 * @property User $owner
 * @property Photo[] $photos
 */
class Album extends CActiveRecord
{

    public function tableName()
    {
        return 'album';
    }


    public function rules()
    {

        return array(
            array('name', 'required'),
            array('shareable', 'numerical', 'integerOnly'=>true),
            array('name', 'length', 'max'=>100),
            array('owner_id', 'length', 'max'=>10),
            array('name', 'safe', 'on'=>'search'),
        );
    }

        protected Function beforeSave() {
            if(parent::beforeSave()) {
                if($this->isNewRecord) {
                    $this->owner_id=Yii::app()->user->getId();
                }
                return true;
            }
            else 
                return false;            
        }


    public function relations()
    {           
        return array(
            'owner' => array(self::BELONGS_TO, 'User', 'owner_id'),
            'photos' => array(self::HAS_MANY, 'Photo', 'album_id'),
                        'lastPhoto' => array(self::HAS_ONE, 'Photo', 'album_id', 'order'=>'lastPhoto.id DESC'),
        );
    }

        public function scopes()
        {
            return array(
                'mine'=>array(
                    'order'=>'date_created DESC',
                    'condition'=>'owner_id=:owner',
                    'params'=>array(
                        'owner'=>Yii::app()->user->getId(),
                    )
                )
            );
        }    

    public function attributeLabels()
    {
        return array(
            'id' => 'ID',
            'name' => 'Name',
            'owner_id' => 'Owner',
            'shareable' => 'Shareable',
            'date_created' => 'Date Created',
        );
    }


    public function search()
    {           

        $criteria=new CDbCriteria;    

        $criteria->compare('name',$this->name,true);            
        $criteria->compare('shareable',$this->shareable);           

        $criteria->scopes='mine';
        return new CActiveDataProvider($this, array(
            'criteria'=>$criteria,
        ));
    }

    public static function model($className=__CLASS__)
    {
        return parent::model($className);
    }
}

控制器动作是（来自 AlbumController）：

public function actionIndex()
    {
                $dataProvider=new CActiveDataProvider('Album', array( 
                        'criteria'=>array(
                            'condition'=>'shareable=1',
                            'order'=>'date_created DESC'    
                            )
                        )
                );

        $this->render('index',array(
            'dataProvider'=>$dataProvider,
        ));
    }

视图文件是专辑/index.php：

<h1>Albums</h1>

<?php $this->widget('zii.widgets.CListView', array(
    'dataProvider'=>$dataProvider,
    'itemView'=>'_view',
)); ?>

_view.php：

<div class="view">

        <h><?php // echo CHtml::encode($data->name); ?></h1>        

        <h1>
           echo CHtml::link(
                    CHtml::image(Yii::app()->request->baseUrl."/uploads/thumbs".$data->lastPhoto->name),
                    array('view', 'id'=>$data->id));                   

        ?>
        </h1>

        <br />
        <br />


    <b><?php  echo CHtml::encode($data->getAttributeLabel('shareable')); ?>:</b>
    <?php echo CHtml::encode($data->shareable)? 'Public' : 'No'; ?>
    <br />

    <b><?php  echo 'Created by'; ?>:</b>
    <?php echo CHtml::encode($data->owner->fullName()); ?>


    <b><?php  echo 'on Date'; ?>:</b>
    <?php echo CHtml::encode($data->date_created); ?>
    <br />

</div>
4

1 回答 1

0

要获取关系中的第一项photos，您只需调用第一个数组值，尽管您可能需要添加一些额外条件以防万一它是一个空数组并且根本没有任何值。

CHtml::link(
    CHtml::image(Yii::app()->request->baseUrl."/uploads/thumbs/".$data->photos[0]->name),
    array('view', 'id'=>$data->id)
);

编辑

另一种选择是将关系限制为仅拉一行，而不是拉所有关系并仅使用第一行：

public function relations()
{
    return array(
        ...
        'lastPhoto' => array(self::HAS_ONE, 'Photo', 'album_id', 'order'=>'lastPhoto.id DESC'),
        ...
    );
}

并像这样调用：

CHtml::link(
    CHtml::image(Yii::app()->request->baseUrl."/uploads/thumbs/".$data->lastPhoto->name),
    array('view', 'id'=>$data->id)
);
于 2014-11-06T11:41:36.920 回答