I have a lot of Categories in database.
Here is Category Entity
namespace AppBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Validator\Constraints as Assert;
/**
* @ORM\Entity
* @ORM\Table(name="categories")
*/
class Category
{
/**
* @ORM\Id
* @ORM\Column(type="integer")
* @ORM\GeneratedValue(strategy="AUTO")
*/
protected $id;
/**
* @ORM\ManyToOne(targetEntity="Category")
*/
protected $rootCategory;
/**
* @ORM\Column(type="text")
*/
protected $name;
/**
* Get id
*
* @return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set name
*
* @param string $name
*
* @return Category
*/
public function setName($name)
{
$this->name = $name;
return $this;
}
/**
* Get name
*
* @return string
*/
public function getName()
{
return $this->name;
}
/**
* Set rootCategory
*
* @param \AppBundle\Entity\Category $rootCategory
*
* @return Category
*/
public function setRootCategory(\AppBundle\Entity\Category $rootCategory = null)
{
$this->rootCategory = $rootCategory;
return $this;
}
/**
* Get rootCategory
*
* @return \AppBundle\Entity\Category
*/
public function getRootCategory()
{
return $this->rootCategory;
}
}
I want to get all categories in my edit form
EditFormType:
namespace AppBundle\Form\Type;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Bridge\Doctrine\Form\Type\EntityType;
use AppBundle\Controller\CategoryController;
class EditPhotoFormType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$categoryController = new CategoryController();
$builder->add('title', 'text');
$builder->add('description', 'textarea');
$builder->add('category', EntityType::class, array(
'class' => 'AppBundle:Category',
'choices' => $categoryController->getCategories(),
));
}
public function getName()
{
return 'app_photo_edit';
}
}
getCategories()
public function getCategories() {
$em = $this->getDoctrine()->getManager();
return $em->getRepository('AppBundle:Category')->findAll();
}
I am getting next error:
Error: Call to a member function has() on null
Thats because there is not Doctrine in controller object. Where should i get Doctrine and Repository in this case?
How should i do it correct way?
First, you should NEVER instantiate any Controller class yourself. Controller classes are used by Symfony's Kernel to handle a request, and they are loaded automatically with dependencies to do so.
Right here, you don't even need to require the EntityManager in your FormType, because EntityType has a built-in option query_builder to do what you need:
$builder->add('category', EntityType::class, array(
'class' => 'AppBundle:Category',
'query_builder' => function (EntityRepository $er) {
return $er->createQueryBuilder('c');
},
);
This should do the trick. (check here for more details)
However, if one day you really need to import a dependancy inside your Form (whether it is EntityManager or another service), here's how you should do:
A. import the given dependency in your constructor:
private $dependency;
public function __construct(Dependency $dependency)
{
$this->$dependency = $dependency;
}
B. Declare your Form as a Service, with your dependency's id as argument:
<service id="app.form.type.edit_photo"
class="AppBundle\Form\Type\EditPhotoFormType">
<tag name="form.type" />
<argument type="service" id="app.dependencies.your_dependency" />
</service>
Then use $this->dependency in your Form wherever you need.
Hope this helps! :)
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