php,symfony2,doctrine2,mapping,symfony-2.6 , Add brands through company, it's possible? How?
Add brands through company, it's possible? How?
Question:
Tag: php,symfony2,doctrine2,mapping,symfony-2.6
I have this two tables (see pics below) mapped as follow:
class Brand
{
...
/**
* @var Company
*
* @ORM\ManyToOne(targetEntity="Company")
* @ORM\JoinColumn(name="companies_id", referencedColumnName="id")
*/
protected $company;
}
class Company
{
...
}
I need to add support for add a new Brand from Company but I have not idea in how to achieve this. This are handled through SonataAdminBundle but I think I need to add something else to entities in order to create brands from company but I am not sure what this would be, can I get some help? I am stucked
1st attempt
After get an answer this is how I modify Company entity:
use Doctrine\ORM\Mapping as ORM;
use Doctrine\Common\Collections\ArrayCollection;
class Company
{
...
/**
* @var Brand
* @ORM\OneToMany(targetEntity="Brand", mappedBy="company", cascade={"persist"})
**/
protected $brands;
public function __construct()
{
$this->brands = new ArrayCollection();
}
...
public function getBrands()
{
return $this->brands;
}
/**
* Add brands
*
* @param Brand $brand
* @return Brands
*/
public function addBrand( Brand $brand)
{
$this->brands[] = $brand;
return $this;
}
/**
* Remove brands
*
* @param Brand $brand
*/
public function removeBrand( Brand $brand)
{
$this->brands->removeElement($brand);
}
}
But I am getting this error:
No entity manager defined for class Doctrine\Common\Collections\ArrayCollection
Why is that?
Answer:
You could try setting up your entities like this:
class Brand
{
/**
* @var Company
*
* @ORM\ManyToOne(targetEntity="Company", inversedBy="brands")
* @ORM\JoinColumn(name="companies_id", referencedColumnName="id")
*/
protected $company;
}
class Company
{
/**
* @var ArrayCollection
*
* @OneToMany(targetEntity="Brand", mappedBy="company", cascade={"persist"})
**/
protected $brands;
}
What we're defining here is that new Brands can be created from the Company entity with cascade={"persist"}.
It's recommended you implement addBrand and removeBrand in Company for direct interaction with the ArrayCollection.
A simple example of the final functionality:
$company = $service->getCompany(1); // our company entity
$brand = new Brand();
$brand->set...
...
$company->addBrand($brand);
$entityManager->persist($company);
EDIT
This is just an example, you may choose not to add with keys or even implement a remove function, but this is a starting point:
public function addBrand(Brand $brand)
{
// key needs to be something that can uniquely identify the brand
// e.g. name
$this->getBrands()->set(*key*, $brand);
return $this;
}
public function removeBrand($key)
{
$this->getBrands()->remove($key);
return $this;
}
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