我现在在一个杂志网站上工作，我无法让 Yii 使用 CActiveDataProvider 返回所有数据。SQL 查询在通过 SQL 运行时运行良好，并且在运行时我在 Yii 中没有收到任何错误。检查日志，整个 SQL 语句在通过 Yii 时正在运行。
public function actionIndex()
{
$this->layout = '//layouts/column1';
if(isset($_GET['cat']))
{
$cat = $_GET['cat'];
$catname = Yii::app()->db->createCommand();
$catname->select='category_name';
$catname->from='category';
$catname->where('id=:cid', array(':cid'=>$cat));
$categoryname = $catname->queryScalar();
$criteria = new CDbCriteria();
$criteria->alias = 'article';
$criteria->select ='article.id, article.title, article.content, article.date_published, image.file_name, image.alt_text, author.first_name, author.last_name';
$criteria->join='INNER JOIN category_article ON article.id = category_article.article_id ';
$criteria->join.='INNER JOIN image ON image.article_id = article.id ';
$criteria->join.='INNER JOIN author ON author.id = article.author_id';
$criteria->condition='category_article.category_id=:cid AND article.completed = 3 AND article.live = 1 AND article.review = 1';
$criteria->params=array(':cid'=>$cat);
$dataProvider=new CActiveDataProvider('Article', array('criteria'=>$criteria));
$this->render('index',array(
'dataProvider'=>$dataProvider,
'cat'=>$cat,
'categoryname'=>$categoryname,
));
Yii::app()->end();
}
$dataProvider=new CActiveDataProvider('Category');
$this->render('index',array(
'dataProvider'=>$dataProvider,
));
}
如果需要，这里是文章模型的关系：
public function relations()
{
// NOTE: you may need to adjust the relation name and the related
// class name for the relations automatically generated below.
return array(
'author' => array(self::BELONGS_TO, 'Author', 'author_id'),
'articleCounts' => array(self::HAS_MANY, 'ArticleCount', 'article_id'),
'articleNote' => array(self::HAS_ONE, 'ArticleNote', 'article_id'),
'categories' => array(self::MANY_MANY, 'Category', 'category_article(article_id, category_id)'),
'comments' => array(self::HAS_MANY, 'Comment', 'article_id'),
'featureds' => array(self::HAS_MANY, 'Featured', 'article_id'),
'image' => array(self::HAS_ONE, 'Image', 'article_id'),
'nonmembercomments' => array(self::HAS_MANY, 'Nonmembercomment', 'article_id'),
'tags' => array(self::MANY_MANY, 'Tag', 'postid_tagid(article_id, tag_id)'),
'videos' => array(self::HAS_ONE, 'Video', 'article_id'),
);
}
这是 print_r 打印输出：
Article Object
(
[_new:CActiveRecord:private] =>
[_attributes:CActiveRecord:private] => Array
(
[id] => 56
[title] => Hello My Lovely
[content] => Lorem ipsum dolor sit amet, consectetur adipiscing elit. Morbi a arcu dictum, tincidunt libero vel, imperdiet ante. Proin consectetur risus vel purus vestibulum, nec scelerisque felis posuere. Maecenas ut erat lobortis, rhoncus tellus at, ultricies turpis. Donec pretium aliquet mi. Integer luctus interdum magna, quis dictum ligula bibendum sed. Curabitur nibh felis, sollicitudin hendrerit nunc eget, interdum fringilla leo. Cras consectetur elit metus, at tempus erat vehicula quis.
[date_published] => 2014-07-15 23:16:07
)
[_related:CActiveRecord:private] => Array
(
[image] => Image Object
(
[_new:CActiveRecord:private] =>
[_attributes:CActiveRecord:private] => Array
(
[id] => 36
[article_id] => 56
[file_name] => hello-you20140624190852.jpg
[image_name] => Hello You
[alt_text] => My Hottie!
)
[_related:CActiveRecord:private] => Array
(
)
[_c:CActiveRecord:private] =>
[_pk:CActiveRecord:private] => 36
[_alias:CActiveRecord:private] => t
[_errors:CModel:private] => Array
(
)
[_validators:CModel:private] =>
[_scenario:CModel:private] => update
[_e:CComponent:private] =>
[_m:CComponent:private] =>
)
[author] =>
)
[_c:CActiveRecord:private] =>
[_pk:CActiveRecord:private] => 56
[_alias:CActiveRecord:private] => t
[_errors:CModel:private] => Array
(
)
[_validators:CModel:private] =>
[_scenario:CModel:private] => update
[_e:CComponent:private] =>
[_m:CComponent:private] =>
)
如您所见，查询中的所有内容都已返回，但作者仍为空白，我不知道为什么。我确实注意到图像对象做了同样的事情，直到我将文章模型中的关系更改为 HAS_ONE，这很好，因为每篇文章只有一个与之关联的图像。任何人都认为它的编写方式有任何错误会导致该问题吗？提前感谢所有答案。