Validator not working in Zend Framework 2 - php

Question

The validator in my zend framework 2 are not working. Even as you can see required=>true works and shows me error if I pass an empty string. But the min and max length validations are not working and $form->isValid() just return true. Any help will be appreciated.
I'm following this tutorial on Zend website. http://framework.zend.com/manual/2.3/en/user-guide/forms-and-actions.html
<?php
namespace AdminAuthentication\Model;
use Zend\InputFilter\InputFilter;
use Zend\InputFilter\InputFilterAwareInterface;
use Zend\InputFilter\InputFilterInterface;
use Zend\InputFilter\Factory as InputFactory;
class Login implements InputFilterAwareInterface{
public $username;
public $password;
protected $inputFilter;
public function exchangeArray($data){
$this->username = isset($data['username']) ? $data['username'] : null;
$this->password = isset($data['password']) ? $data['password'] : null;
}
public function setInputFilter(InputFilterInterface $inputFilter){
throw new \Exception("Not Used!");
}
public function getInputFilter(){
if( ! $this->inputFilter ){
$inputFilter = new InputFilter();
$factory = new InputFactory();
$inputFilter->add($factory->createInput(array(
'name' => 'username',
'required' => true,
'filters' => array(
array('name' => 'StripTags'),
array('name' => 'StringTrim' ),
),
'validators' => array(
array('name' => 'StringLength',
'encoding' => 'UTF-8',
'min' => 5,
'max' => 35
)
)
)));
$inputFilter->add($factory->createInput(array(
'name' => 'password',
'required' => true,
'filters' => array(
array('name' => 'StripTags'),
array('name' => 'StringTrim' ),
),
'validators' => array(
array('name' => 'StringLength',
'encoding' => 'UTF-8',
'min' => 5
)
)
)));
$this->inputFilter = $inputFilter;
}
return $this->inputFilter;
}
}

Answer 1

I think you missed something in the documentation tutorial. Your code is wrong.
You have :
'validators' => array(
array('name' => 'StringLength',
'encoding' => 'UTF-8',
'min' => 5,
'max' => 35
)
)
You should have this :
'validators' => array (
array (
'name' => 'StringLength',
'options' => array (//<-----options array here
'encoding' => 'UTF-8',
'min' => 1,
'max' => 100
)
)
)
The min, max and encoding should be in the options array.

Answer 2

Well, above code was in documentation and not working. I don't know the reason but I've found the solution. For validator, replace
'validators' => array(
array('name' => 'StringLength',
'encoding' => 'UTF-8',
'min' => 5
)
)
with
'validators' => array(
new StringLength(
array(
'encoding' => 'UTF-8',
'min' => 5
)
),
),
Here is the complete code.
namespace AdminAuthentication\Model;
use Zend\InputFilter\InputFilter;
use Zend\InputFilter\InputFilterAwareInterface;
use Zend\InputFilter\InputFilterInterface;
use Zend\InputFilter\Factory as InputFactory;
use Zend\Validator\StringLength;
class Login implements InputFilterAwareInterface
{
public $username;
public $password;
protected $inputFilter;
public function exchangeArray($data)
{
$this->username = isset($data['username']) ? $data['username'] : null;
$this->password = isset($data['password']) ? $data['password'] : null;
}
public function setInputFilter(InputFilterInterface $inputFilter)
{
throw new \Exception("Not Used!");
}
public function getInputFilter()
{
if (!$this->inputFilter) {
$inputFilter = new InputFilter();
$factory = new InputFactory();
$inputFilter->add($factory->createInput(array(
'name' => 'username',
'required' => true,
'filters' => array(
array('name' => 'StripTags'),
array('name' => 'StringTrim'),
),
'validators' => array(
new StringLength(
array(
'encoding' => 'UTF-8',
'min' => 5,
'max' => 35
)
),
),
)));
$inputFilter->add($factory->createInput(array(
'name' => 'password',
'required' => true,
'filters' => array(
array('name' => 'StripTags'),
array('name' => 'StringTrim'),
),
'validators' => array(
new StringLength(
array(
'encoding' => 'UTF-8',
'min' => 5
)
),
),
)));
$this->inputFilter = $inputFilter;
}
return $this->inputFilter;
}
}