pass parameter from url to cakephp - cakephp

Question

I need to send parameter from URL to cakephp controller. I have message table with two parameter 'ufrom' and 'uto'. in controller i want to save this values in message table.
I put in the URL:
http://localhost/ar/messages/add?ufrom=9&uto=3
in MessagesController i have function:
public function add() {
if(($this->request->query['uto'])and($this->request->query['ufrom'])){
$this->Message->create();
if ($this->Message->save($this->request->data)) {
$this->set('addMessage',TRUE);
$this->set('ufrom',$this->request->query['ufrom']);
$this->set('uto',$this->request->query['uto']);
$this->redirect(array('action' => 'index'));
} else {
$this->Session->setFlash(__('The message could not be saved. Please, try again.'));
}
$targets = $this->Message->Target->find('list');
$this->set(compact('targets'));
}
else{
$this->set('error',true);
}
}
and in add.ctp i have:
<?php
if(isset($error)){
echo('error');
}
else{
echo json_encode($ufrom);
echo json_encode($uto);
echo json_encode($addMessage);
}
?>
but when i use the above URL i see:
Notice (8): Undefined variable: ufrom [APP\View\Messages\add.ctp, line 6]null
Notice (8): Undefined variable: uto [APP\View\Messages\add.ctp, line 7]null
Notice (8): Undefined variable: addMessage [APP\View\Messages\add.ctp, line 8]null
and Nothing is stored in the database. I'm new in cakephp. please help.

Answer 1

here i can suggest you to use params like below
http://www.example.com/tester/retrieve_test/good/1/accepted/active
but if you need to use like this way
http://www.example.com/tester/retrieve_test?status=200&id=1yOhjvRQBgY
you can get the value like below
echo $this->params['url']['id'];
echo $this->params['url']['status'];
in your case would be like
echo $this->params['url']['uto'];
echo $this->params['url']['ufrom'];

Answer 2

The easiest way to pass parameters to the controller action would be to simply pass them through the action as arguments like so:
public function add($ufrom,$uto)
Your URL should look like:
http://localhost/ar/messages/add/9/3
Secondarily if the data is coming from the URL you wouldn't use this->request->data , simply :
$message = array("Message"=>array("ufrom"=>$ufrom,"uto"=>$uto));
$this->Message->save($message);