我正试图显示关系中第三个表中的字段,在检查了这里的帖子和文档后,我仍然被卡住了。我有三个模型,在某种程度上都是相关的。我在这里找到了类似的帖子,但我仍然没有让它发挥作用。我很抱歉,如果我在文档中的某个地方错过了这个,但我已经读了很多,也尝试了很多。我现在对此猜测太多了,所以我需要帮助。
1)Tutorsession - belongsto teachers,
2) Teacher -has 1 user,hasmany tutorsessions
3) User- has 1 teacher, //////I want to display a field from this table given I display tutorsessions
In controller
$this->set('tutor',
$this->Tutorsession->find('first',
array(
'conditions' => array('Teacher.user_id' => $id),
'contain' => 'User.username'
)
)
); //////////no error but no results
from view echo '<td>'. $item['User']['username'].'</td>'; ///////error user undefined
在findall上设置模型的情况下,教程会话会自动从教师表中获取行,但不会从用户表中获取。
我想显示用户表中的用户名。我显示教程会话表,然后我可以显示具有模型关联的教师表,但我不能从教师表转到用户表,从用户id中获取用户名作为公共字段。我已经检查了下面的文档,我不确定为什么我的代码不能显示用户表中的用户名。
http://book.cakephp.org/2.0/en/core-libraries/behaviors/containable.htmlhttp://book.cakephp.org/2.0/en/models/retrieving-your-data.html
update: here are the models
class User extends AppModel {
public $hasOne = array(
'Teacher' => array(
'className' => 'Teacher',
'dependent' => true
)
class Tutorsession extends AppModel
{
public $name='Tutorsession';
public $belongsTo = array(
'Teacher' => array(
'className' => 'Teacher',
'foreignKey' => 'teacher_id'
)
class Teacher extends AppModel
{
public $name='Teacher';
public $hasMany = array('Tutorsession');
public $belongsTo = array(
'User' => array(
'className' => 'User',
'foreignKey' => 'user_id'
)
);
在模型中添加可包含的行为
public $actsAs = array('Containable');
在控制器中执行以下查询
$contain = array('Teacher' => array('User'));
$this->set('tutor', $this->Tutorsession->find('first',array(
'conditions' => array('Teacher.user_id' => $id),
'contain' => $contain
)));
试试这个:
$this->Tutorsession->recursive = 2;
$this->Tutorsession->Teacher->contain('User');
$this->set('tutor',
$this->Tutorsession->find('first',
array(
'conditions' => array('Teacher.user_id' => $id)
)
)
);
$tutor=$this->Teacher->find('first',
array(
'conditions' => array('Teacher.user_id' => $id)
)
);
debug($tutor); exit();
您的结果类似:
'Teacher' => array(
'id' => '1',
'name' => 'abc',
'created' => '1397040385',
'updated' => '1397725860'
),
'User' => array(
'id' => '4',
'name' => 'administrators',
'created' => '1397032953',
'modified' => '1397032953'
),
'Tutorsession' => array(
0=>array(
'id' => '3',
'name'=>'abc',
'created' => '1400729137'
),
1=>array(
'id' => '4',
'name'=>'abc',
'created' => '1400729137'
)
)
确保您的模型是正确的