Adding a Child in Parent View CakePHP - php

Question

I am trying to add a child in a parent view in CakePHP.
Meaning, I have a Lesson I want to add to a Course in the Course view.
I tried doing it via a simple form helper - adding a $course['Lesson']:
<div class="lessons form">
<?php echo $this->Form->create($course['Lesson']); ?>
<fieldset>
<legend><?php echo __('Add Lesson'); ?></legend>
<?php
echo $this->Form->input('name');
echo $this->Form->input('description');
echo $this->Form->input('course_id', array(
'value'=>$course['Course']['id']
));
?>
</fieldset>
<?php echo $this->Form->end(__('Submit')); ?>
</div>
But that doesn't seem to do it.
Am I missing something in the Controller/Model?

Answer 1

let's think course controller
//course controller
public function add_lesson() {
if ($this->request->is('post')) {
$this->Lesson->create();
if ($this->Lesson->save($this->request->data)) {
$this->Session->setFlash(__('The Lesson has been saved.'));
return $this->redirect(array('action' => 'index'));
} else {
$this->Session->setFlash(__('The Lesson could not be saved. Please, try again.'));
}
}
$this->set('courses', $this->Course->find('list'));
}
//add_Lesson View
<?php echo $this->Form->create('Lesson', array('url' => array('controller'=>'courses', 'action'=>'add_lesson')) ); ?>
<fieldset>
<legend><?php echo __('Add Lesson'); ?></legend>
<?php
echo $this->Form->input('name');
echo $this->Form->input('description');
echo $this->Form->input('course_id');
?>
</fieldset>
<?php echo $this->Form->end(__('Submit')); ?>

Answer 2

If you want to use Course controller you can save your data like this:
$this->Course->Lesson->save($this->request->data);
in this case you will need to make sure after submitting your form your data is structure as below:
array(
'Course' => array(
'id' => 1
),
'Lesson' => array(
'name' => 'name'
'description' => 'balbalbala'
'course_id' => 1
),
);