CakePHP multilevel models - cakephp

Question

I've been trying to figure out how to save multi-level models in CakePHP for some time now, but can't seem to find a solution.
I have three models. Survey, Question, and Choice.
Survey hasMany Question - so Question belongsTo Survey
Question hasMany Choice - so Choice belongsTo Question
The Question is linked to the Survey through its survey_id key.
The Choice, on the otherhand, is linked to the Question through its question_id key. (not directly linked to Survey though)
The form is created through $this->Form->create('Survey').
I want the application to save a survey with its corresponding questions, AND each question having their corresponding choice(s).
The problem is, only the Survey and Question models are saved. Choice gets discarded.
I'm using $this->saveAssociated($this->request->data, array( 'deep' => true) )
I will be updating my post to show the $_POST data.
Thanks,
XTN

Answer 1

Before saving data, you have to ensure that data should be in this format
in your controller:
$data = array('Survey' => array('id' => 1,'name' => 'test'),
'Question' => array(
array('id' => 1,'question' => 'test1','survey_id' => 1,
'Choice' => array(
array('id' => 1,'question_id' => 1,'choice' => 1),
array('id' => 2,'question_id' => 1,'choice' => 2)
)
),
array('id' => 2,'question' => 'question2','survey_id' => 1,
'Choice' => array(
array('id' => 3,'question_id' => 2,'choice' => 'sd'),
array('id' => 4,'question_id' => 2,'choice' => 'we')
)
)
)
);
$this->Survey->create();
$this->Survey->saveAssociated($data,array('deep'=>true));
Survey Model :
public $hasMany = array(
'Question' => array(
'className' => 'Question',
'foreignKey' => 'survey_id',
'dependent' => false,
)
);
Question Model :
public $belongsTo = array(
'Survey' => array(
'className' => 'Survey',
'foreignKey' => 'survey_id',
)
);
public $hasMany = array(
'Choice' => array(
'className' => 'Choice',
'foreignKey' => 'question_id',
'dependent' => false,
)
);
Choice Model :
public $belongsTo = array(
'Question' => array(
'className' => 'Question',
'foreignKey' => 'question_id',
)
);
I think it will work if found any problem please notify

Answer 2

Your models should looks like:
Survey Model: Survey.php
class Survey extends AppModel {
public $name = 'Survey';
public $hasMany = array('Questions' => array(
'className' => 'Question',
'foreignKey' => 'survey_id'
)
);
}
Question Model: Question.php
class Question extends AppModel{
public $name = 'Question';
public $belongsTo = array(
'Survey' => array('className' => 'Survey', 'foreignKey' => 'survey_id'),
'Answer' => array('className' => 'Choice', 'foreignKey' => 'answer_id'));
public $hasMany = array('Choices' => array('className' => 'Choice',
'foreignKey' => 'question_id'));
}
Choice Model: Choice.php
class Choice extends AppModel
{
public $name = 'Choice';
public $belongsTo = array('Question' => array('className' => 'Question',
'foreignKey' => 'question_id'));
}
Kindly ask if it not worked for you.