檢索數據並加入CakePHP的3.5

Question

表在這書上的例子：

https://book.cakephp.org/3.0/en/orm/associations.html#using-the-through-option

class StudentsTable extends Table 
{ 
    public function initialize(array $config) 
    { 
     $this->belongsToMany('Courses', [ 
      'through' => 'CoursesMemberships', 
     ]); 
    } 
} 

class CoursesTable extends Table 
{ 
    public function initialize(array $config) 
    { 
     $this->belongsToMany('Students', [ 
      'through' => 'CoursesMemberships', 
     ]); 
    } 
} 

class CoursesMembershipsTable extends Table 
{ 
    public function initialize(array $config) 
    { 
     $this->belongsTo('Students'); 
     $this->belongsTo('Courses'); 
    } 
} 

我可以看到學生/視圖與每個學生的課程列表/ N，因爲我在StudentsController下面的代碼：

public function view($id = null) 
    { 
     $student = $this->Students->get($id, [ 
      'contain' => ['Cources'] 
     ]); 

     $this->set('student', $student); 
     $this->set('_serialize', ['student']); 

    }  

如果我通過CoursesMemberships有替代課程：

public function view($id = null) 
    { 
     $student = $this->Students->get($id, [ 
      'contain' => ['CoursesMemberships'] 
     ]); 

     $this->set('student', $student); 
     $this->set('_serialize', ['student']); 

    }  

並在Students/view.ctp中做相應的修改，我可以看到相關課程的成員名單。

如何看到兩者？我的意思是，StudentsController中應該包含什麼，以便我可以在每個學生的相同視圖（相同表格中更好）中看到兩個相關課程以及days_attended和grade？

Answer 1

使用第一個變體，即包含Courses，連接表數據將在Course實體_joinData屬性中可用。

$course->_joinData->days_attended 
$course->_joinData->grade