ZF2: Validate collection field based on parent fieldset element - php

Question

I'm trying to validate a field inside a Collection.
The Collection refers to Company Areas and is tied to a Company Fieldset
The validation needs to check that the Area Name doesn't exists for that Company in the Database yet.
I'm trying to do this using a Callback validator within my collection element 'area_name', my problem is that the collection is aware only of its own context, that means all fields associated to the Area but not aware of the Company context, so i can't filter my validator by its Company parent.
Is there a way to access the parent context of a collection? or should i need to initialize my form passing the Company object to the Collection prior validating?
EDIT: I forgot to mention that i'm using Doctrine2 so i'm not sure if it is possible to use the Db_NoRecordExists Validator bundled with ZF2

Answer 1

This is an old question and you might have fixed this already, but I had a similar problem recently.
You can create a function in your area model/service: validateAreaCompanyRelation(area, company)and in your fieldset use the callback to use it:
AreaService class:
add a method to return true or false based on query limited by 1 row.
in my case it was somthing like this:
public function validateAreaCompanyRelation($company, $area)
{
$result = false;
$count = $this->getRepository()
->createQueryBuilder('q')
->select('q')
->innerJoin('q.company', 'c')
->innerJoin('q.area','b')
->where('b.id = :area and c.company = :company')
->setParameter('area',$area)
->setParameter('company',$area)
->setMaxResults( 1 )
->getQuery()
->getArrayResult();
if(count($count) <>1){
$result=true;
}
return $result;
}
Area Field set:
inject AreaService to the field set (pass it to construct in factory)
class AreaFieldset extends Fieldset implements InputFilterProviderInterface
{
private $areaService;
public function __construct(areaServiceEntityService $areaService)
{
$this->areaService = $areaService;
}
public function init()
{
$this->add(
array(
'name' => 'area',
'filters' => array(),
'validators' => array (
array(
'name' => 'Zend\Validator\Callback',
'options' => array(
'messages' => array(
\Zend\Validator\Callback::INVALID_VALUE => 'Your custom error message',
),
'callback' => array($this,'vlidateUniqueRelation'),
),
),
)
)
);
array(
'name' => 'company',
'filters' => array(),
'validators' => array (
array(
'name' => 'Zend\Validator\Callback',
'options' => array(
'messages' => array(
\Zend\Validator\Callback::INVALID_VALUE => 'Your custom error message',,
),
'callback' => array($this,'vlidateUniqueRelation'),
),
),
)
)
);
}
public function vlidateUniqueRelation($value, $context)
{
// $value = value
// $context['xxxx'] = xxxxx value
// Logic to validate goes here
$context["company"]
$context["area"]
return $this->AreaService->validateAreaCompanyRelation($context["company"], $context["Area"]);
}