validation - symfony2 validate a form value using another form value -

in symfony2, use custom constraints validate data on form, wonder if can bring in 1 value form use in validating value?

here's constraint...

<?php // src\biztv\containermanagementbundle\validator\constraints\containerexists.php namespace biztv\containermanagementbundle\validator\constraints;  use symfony\component\validator\constraint;  /**  * @annotation  */ class containerexists extends constraint {     public $message = 'namnet är upptaget, vänligen välj ett annat.';      public function validatedby()     {         return 'containerexists';     }  } 

and validator...

<?php  // src\biztv\containermanagementbundle\validator\constraints\containerexistsvalidator.php namespace biztv\containermanagementbundle\validator\constraints;  use symfony\component\validator\constraint; use symfony\component\validator\constraintvalidator;  use symfony\component\dependencyinjection\containerinterface container; use doctrine\orm\entitymanager entitymanager;  class containerexistsvalidator extends constraintvalidator {      private $container;     private $em;      public function __construct(container $container, entitymanager $em) {         $this->container = $container;         $this->em = $em;     }         public function isvalid($value, constraint $constraint)     {          $em = $this->em;         $container = $this->container;          $company = $this->container->get('security.context')->gettoken()->getuser()->getcompany();          //fetch entities same name         $repository = $em->getrepository('biztvcontainermanagementbundle:container');         $query = $repository->createquerybuilder('c')             ->where('c.company = :company')             ->setparameter('company', $company)             ->orderby('c.name', 'asc')             ->getquery();         $containers = $query->getresult();                foreach ($containers $g) {             if ($g->getname() == $value) {                 $this->setmessage('namnet '.$value.' är upptaget, vänligen välj ett annat', array('%string%' => $value));                 return false;             }         }          return true;     } } 

used through service...

services:   biztv.validator.containerexists:     class: biztv\containermanagementbundle\validator\constraints\containerexistsvalidator     arguments: ['@service_container', '@doctrine.orm.entity_manager']           tags:         - { name: validator.constraint_validator, alias: containerexists } 

here's how apply entity...

<?php  namespace biztv\containermanagementbundle\entity;  use doctrine\orm\mapping orm; use symfony\component\validator\constraints assert;  use biztv\containermanagementbundle\validator\constraints biztvassert;  use biztv\userbundle\entity\user user; use biztv\containermanagementbundle\entity\container container;  /**  * biztv\containermanagementbundle\entity\container  *  * @orm\table(name="container")  * @orm\entity  */ class container {      /**      * @var integer $id      * @orm\id      * @orm\column(type="integer")      * @orm\generatedvalue(strategy="auto")      */     protected $id;      /**      * @var string $name      * @assert\notblank(message = "du måste ange ett namn")       * @biztvassert\containerexists      * @orm\column(name="name", type="string", length=255, nullable=true)      */     private $name; 

in validator able accomplish instead

public function isvalid($form->othervalue, $value, constraint $constraint) {      $em = $this->em;     $container = $this->container;      $company = $this->container->get('security.context')->gettoken()->getuser()->getcompany();      //fetch entities same name     $repository = $em->getrepository('biztvcontainermanagementbundle:container');     $query = $repository->createquerybuilder('c')         ->where('c.company = :company')         ->setparameter('company', $company)         ->orderby('c.name', 'asc')         ->getquery();     $containers = $query->getresult();                 if ($g->getname() == $form->othervalue) {             $this->setmessage('namnet '.$value.' är upptaget, vänligen välj ett annat', array('%string%' => $value));             return false;         }       return true; } 

you can create class constraint validator (http://symfony.com/doc/master/cookbook/validation/custom_constraint.html#class-constraint-validator) , object itself.

first need create constraint class:

class containerexists extends constraint {     public $message = 'namnet är upptaget, vänligen välj ett annat.';      public function validatedby()     {         return 'containerexists';     }      public function gettargets() {     return self::class_constraint; } } 

after create validator have access object , not single property.

class containerexistsvalidator extends constraintvalidator {      private $em;     private $security_context;      public function __construct(entitymanager $entitymanager, $security_context) {         $this->security_context = $security_context;         $this->em = $entitymanager;     }      public function validate($object, constraint $constraint) {          // whatever want object, , if wrong add violation                  $this->context->addviolation($constraint->message, array('%string%' => 'something'));              }          }      } 

then create service access entity manager , stuff:

validator.container_exists:         class: yourbundlename\validator\constraints\containerexistsvalidator         arguments: ["@doctrine.orm.entity_manager", "@security.context"]         tags:             - { name: validator.constraint_validator, alias: containerexists } 

in case class constraint validator applied class itself, , not property need add following annotation class.

use yourbundlename\validator\constraints backendassert;  /**  * @backendassert\containerexists  */