使用模型在CakePHP中创建两个表之间的关系来编写更少的代码

Question

I try to say just CkMmUsersKta.user_id=CkSetupUser.id and define relationship between 2 tables in CakePhp. I defined models and called models in function in controller but says Undefined index for

$c['CkSetupUser']['user_name']

CakePHP's Notice (8): Undefined index: CkSetupUser [APP\Controller\RealsController.php, line 67]

my controller:

class RealsController extends AppController {

   public $helpers = array('Html', 'Form');
   public $uses =array('CkMmUsersKta','CkSetupUser');

  public function index(){
   $this>loadModel('CkMmUsersKta');$this>loadModel('CkSetupUser');

   ini_set('memory_limit', '2000M');

   $cs=$this->CkMmUsersKta->find("all",array('fields'=>array('CkMmUsersKta.id')));

      foreach($cs as $c):
        echo $c['CkMmUsersKta']['id'].$c['CkSetupUser']['user_name']."<br />";
      endforeach;
   set_time_limit(0); 
   }
}

my CkSetupUser model:

    public $hasMany = array(
        'CkMmUsersKta' => array(
            'className'     => 'CkMmUsersKta',
            'foreignKey'    => 'user_id',
            'dependent'     => true
        )

    );

my CkMmUsersKta model:

    public $belongsTo = array(
        'CkSetupUser' => array(
            'className'    => 'CkSetupUser',
            'foreignKey'    => 'user_id'
        )

    );

Answer 1

The problem is that you are fetching only id field in:

$cs=$this->CkMmUsersKta->find("all",array('fields'=>array('CkMmUsersKta.id')));

You should specify the name field also.

$cs=$this->CkMmUsersKta->find("all",array('fields'=>array('CkMmUsersKta.id','CkSetupUser.user_name')));