cakephp insert data on database of linked models - php

Question

I have two models "Ficha" and "Perigo":
class Ficha extends AppModel {
var $primaryKey = 'id_ficha';
public $validate = array(
'nome_produto' => array(
'rule' => 'notEmpty'
),
'versao' => array(
'rule' => 'notEmpty'
),
'data_ficha' => array(
'rule' => 'notEmpty'
)
);
}
class Perigo extends AppModel {
var $belongsTo = array(
'Ficha' => array(
'className' => 'Ficha',
'foreignKey' => 'id_fichas'
)
);
}
As you can see they are "linked". Now, in the code i have a form for Ficha that the method "add()" of FichasController redirects to my Perigo Model:
add() (of FichaController)
public function add() {
//pr($this->request->data); // to get the data from the form
if ($this->request->is('post')) {
$this->Ficha->create();
if ($this->Ficha->save($this->request->data)) {
$this->Session->setFlash('Your post has been saved.');
//$last_id=$this->Ficha->getLastInsertID();
//$this->redirect(array('action' => 'preencher_ficha'),$last_id);
$this->redirect(array('controller'=>'perigos', 'action' => 'add'),$last_id);
} else {
$this->Session->setFlash('Unable to add your post.');
}
}
}
The redirection is made to a form that exists in PerigosController.
add.ctp (of Perigo)
echo $this->Form->create('Perigo');
echo $this->Form->input('class_subst', array('label' => 'Classificação da substância ou mistura:'));
echo $this->Form->input('simbolos_perigo', array('label' => 'Símbolos de Perigo:'));
echo $this->Form->input('frases_r', array('label' => 'Frases R:'));
echo $this->Form->end('Avançar');
add() (of PerigoController)
public function add() {
if ($this->request->is('post')) {
$this->Perigo->create();
if ($this->Perigo->save($this->request->data)) {
$this->Session->setFlash('Your post has been saved.');
$this->redirect(array('controller'=>'perigos', 'action' => 'index'));
} else {
$this->Session->setFlash('Unable to add your post.');
}
}
}
but there's something i don't know how to do it. Since the models are relational, and the same happens with the two tables on the database (the table perigos has a foreignkey that is the primary key of the table "fichas", how can i insert the data on table perigos in database? I mean, how can i get the key of the Ficha inserted in the first form and insert her in the foreign key of "perigos" when i submit this second form?

Answer 1

As #mark says, your redirection is bad, it should include the id in the URL array:
$this->redirect(array('controller'=>'perigos', 'action' => 'add', $last_id));
Like this you are passing the parameter by URL.
In the add action of your PerigosController you should have an $idFicha param at the method:
//PerigosController.php
public function add($idFicha){
//here you can use $idFicha
...
//when submiting the Perigos form, we add the foreign key.
if($this->request->is('post')){
//adding the foreign key to the Perigo's array to add in the DB.
$this->request->data['Perigo']['ficha_id'] = $idFicha;
if ($this->Ticket->save($this->request->data)) {
//...
}
}
}
Data submitted by POST method in a form will be always contained in an array of this type: $this->request->data['Model_name']. In your case:
$this->request->data['Perigo']
Another way to do this, is using sessions if you prefer to hide the id value:
http://book.cakephp.org/2.0/en/core-libraries/components/sessions.html#sessions