Question

我不只是t know howto accessing data from a related table (with ActiveRecords) and use all those records as a dataSource for a CActiveDataProvider. The main idea is that a user must be able to CRUD`他班上的课程。

我有以下表格：

user (id, name, age, email...),
user_class (user_id, class_id),
class (id, name, description, ...),
course (id, class_id, name, description);

用户和班级表格 MANY TO MANY ，班级和课程表格 ONE TO MANY

我还定义了以下关系：

用户模型关系：

'classes'=>array(
    self::MANY_MANY,
    'Class',
    'user_class(user_id, class_id)',
    ),
'courses'=>array(
    self::HAS_MANY,
    'Course',
    array('class_id','id'),
    'through'=>'classes'
)

班级模式关系：

'users' => array(
    self::MANY_MANY,
    'User',
    'user_class(class_id, user_id)'
),
'courses' => array(
    self::HAS_MANY,
    'Class',
    'class_id'
),

课程模式关系：

'class' => array(
    self::BELONGS_TO,
    'Class',
    'class_id'
)

在我的CourseController，actionManage()上，我有类似的内容：

public function actionManage() {
    $currentUser = User::model()->with('classes', 'courses')->findByPk(Yii::app()->user->id);
    $userCourses = $currentUser->classes->courses; //--> NO courses!!!
    /* add users` courses to an CActiveDataProvider //--> how to do this?!
}

Answer 1

如果您尝试var_dump($currentUser->classes);，您会注意到它是一个数组。

如果有与$userCourses = $currentUser->classes[0]->courses;

访问多对多和一对多关系中的数据

1 个答案: