How to do validation with Forms in Phalcon 2.1? What have I missed in my code?

Question

How to do validation with Forms in Phalcon 2.1? What have I missed in my code?

Zaxap May '16

Created May '16	Last Reply Aug '16	Replies 3	Views 786	Votes 0

Zaxap 11.1k

May '16

That is my code:

app/forms/MyForm.php

<?php

use Phalcon\Forms\Form;
use Phalcon\Forms\Element\Text;
use Phalcon\Forms\Element\Password;
use Phalcon\Validation\Validator\PresenceOf;
use Phalcon\Validation\Validator\StringLength;
use Phalcon\Validation\Validator\Regex;
use Phalcon\Validation\Validator\Uniqueness;

class MyForm extends Form
{
    public function initialize()
    {
        $name = new Text('name', [
            'minlength'   => 3,
            'maxlength'   => 30,
            'placeholder' => 'Name'
        ]);
        $username->addValidators([
            new StringLength([
                'messageMinimum' => 'The name is too short',
                'min'            => 4
            ]),
            new Regex([
                'message'      => 'The name is required',
                'pattern'      => '/^[a-zA-Z0-9-_.]+$/',
                'cancelOnFail' => true
            ]),
            new Uniqueness([
                'model'        => 'Users',
                'message'      => 'Sorry, this name already taken.'
            ])
        ]);
        $this->add($name);

        $password = new Password('pass', [
            'minlength'   => 2,
            'placeholder' => 'password'
        ]);
        $password->addValidators([
            new PresenceOf([
                'message' => 'The password is required'
            ]),
            new StringLength([
                'messageMinimum' => 'The password is too short',
                'min'            => 3
            ])
        ]);
        $password->clear();
        $this->add($password);
    }
}

app/controllers/RegisterController.php

<?php

use Phalcon\Mvc\Controller;

class RegisterController extends Controller
{
    public function indexAction()
    {
        $form = new MyForm;
        if ($this->request->isPost()) {
            $user = new Users;
            $user->assign([
                'name' => $this->request->getPost('name', ['string', 'striptags']),
                'pass' => $this->request->getPost('pass')
            ]);
            if ($user->save()) {
                return $this->response->redirect('register/done');
            }
            $this->flash->error($user->getMessages());
        }
        $this->view->form = $form;
    }

    public function doneAction()
    {
        return 'Done!';
    }
}

But the validation has always passed and website always returned "Done!".

I tried to use

if ($form->isValid($_POST)) { ... }

<?php

// ...
    public function indexAction()
    {
        // ...
        if ($this->request->isPost()) {
            if ($form->isValid($_POST)) {
                // ...
            }
        }
        // ...
    }
// ...

But it returnes this error:

Exception: Model of record must be set to property "model"

I hope for your support :)

P.S. My version of Phalcon - 2.1

David Hübner
9.3k

Accepted
answer

edited May '16
May '16

Maybe try to rename $username to $name and it will work :)

$name = new Text(...);
$username->addValidators(...);

Also you have to pass model instance to Uniqueness validator instead of model class. you can pass that model as first parameter of initialize method.

Zaxap · Answer 1 · 2016-05-02T07:12:31-07:00

Maybe try to rename $username to $name and it will work :)

Oh! Sorry for this mistake :) I've already did it, but unfortunately still see an error:

Exception: Model of record must be set to property "model"

I can not fully understand what is the real cause of this... Do you have any guesses what's it?

Also you have to pass model instance to Uniqueness validator instead of model class. you can pass that model as first parameter of initialize method.

Can you say me more about it? Of course, If it's not very difficult)))

David Hübner · Answer 2 · 2016-05-02T07:49:25-07:00

Form class

class MyForm extends Form
{
    public function initialize($model)
    {
        $name = new Text('name', [
            'minlength'   => 3,
            'maxlength'   => 30,
            'placeholder' => 'Name'
        ]);
        $username->addValidators([
            ...,
            new Uniqueness([
                'model' => $model,
                'message' => 'Sorry, this name already taken.'
            ])
        ]);
    }
}

controller

class RegisterController extends Controller
{
    public function indexAction()
    {
        $user = new Users;
        $form = new MyForm($user);
        ...
    }
}

Trent Ramseyer · Answer 3 · 2016-08-21T11:59:19-07:00

You can initiate a model in the uniqueness array

<?php
 new Uniqueness(
   array(
     'model' => new User(),
     'message' => ':field must be unique'
   )
 )