我尝试通过属于该相册的图片显示指向相册/视图的链接。我有我的模特＆＃39;专辑＆＃39;在那里，我与我的照片＆＃39; model，表示保存图片的表格（或更准确的图片名称，图片保存在文件夹中＆＃39;上传＆＃39;：
public function relations()
{
return array(
'photos' => array(self::HAS_MANY, 'Photo', 'album_id'),
);
}
现在我正在显示相册/索引视图，其中我解析包含所有相册的$ dataProvider对象。现在，$ dataProvider被解析为 _view 视图，并且我试图访问属于所显示的每个专辑的图片（实际上我只需要每张专辑一张图片）。该图片将代表相册/视图视图的链接，其中可以看到属于该相册的所有图片。我不知道如何做到这一点。我试过了：
CHtml::link(
CHtml::image(Yii::app()->request->baseUrl."/uploads/thumbs/".$data->photos->name),
array('view', 'id'=>$data->id));
我得到了错误：试图获取非对象的属性
PS：我在 album / view 视图中显示一张专辑中的所有图片没有问题（但是这些交叉控制器，交叉表无论什么东西给我带来的困难）。在那里我嵌套了照片/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，我显示图片的缩略图，为什么我有＆＃34; / uploads / thumbs /＆＃34;。＆＃34; name＆＃34;是表中的列，代表图像的文件名）
修改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
修改2
这真让我疯狂......在相同的专辑模型中，我与其他表格有其他关系＆＃34;用户＆＃34;：
public function relations()
{
return array(
'owner' => array(self::BELONGS_TO, 'User', 'owner_id'),
...
);
}
我在专辑视图中访问User模型中的属性没有问题，检查了var_dump（$ data-＆gt; 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
与var_dump完全相同的输出（$ data-＆gt; lastPhoto）（仅使用它自己的属性），但当我尝试使用$ data-＆gt; lastPhoto-＆gt; name时它的试图获取非对象的属性，而$ data-＆gt; owner-＆gt; username工作得很好
编辑3
这是我的相册模型：
<?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album / 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($data->date_created); ?>
<br />
</div>
答案 0 :(得分：0)
要获得photos关系中的第一项，您可以调用第一个数组值，尽管您可能需要添加一些额外的条件，以防万一它是一个空数组并且根本没有值。
CHtml::link(
CHtml::image(Yii::app()->request->baseUrl."/uploads/thumbs/".$data->photos[0]->name),
array('view', 'id'=>$data->id)
);
修改
另一种选择是将关系限制为仅拉一行，而不是拉动所有关系而只使用第一行：
public function relations()
{
return array(
...
'lastPhoto' => array(self::HAS_ONE, 'Photo', 'album_id', 'order'=>'lastPhoto.id DESC'),
...
);
}
并且这样打电话：
CHtml::link(
CHtml::image(Yii::app()->request->baseUrl."/uploads/thumbs/".$data->lastPhoto->name),
array('view', 'id'=>$data->id)
);