Cannot insert multiple values with entity form when multiple is true - forms

Question

It throws an error when I submit the form with multiple=true: When is false everything works as expected and one value is inserted to the table.
Catchable Fatal Error: Argument 1 passed to AppBundle\Entity\CustomersProducts::setProducts() must be an instance of AppBundle\Entity\Products, instance of Doctrine\Common\Collections\ArrayCollection given, called in /var/www/html/app/vendor/symfony/symfony/src/Symfony/Component/PropertyAccess/PropertyAccessor.php on line 556 and defined
Products.php
<?php
namespace AppBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use Doctrine\Common\Collections\ArrayCollection;
use AppBundle\Entity\Products;
/**
* Products
*
* #ORM\Table(name="products")
* #ORM\Entity(repositoryClass="AppBundle\Repository\ProductsRepository")
*/
class Products
{
/**
* #ORM\OneToMany(targetEntity="CustomersProducts", mappedBy="products")
*/
private $products;
public function __toString() {
return $this->name;
}
public function addProducts(Products $request)
{
$this->products->add($request);
return $this;
}
public function removeProducts(Products $request)
{
$this->products->removeElement($request);
return $this;
}
public function __construct() {
$this->products= new ArrayCollection();
}
/**
* #var int
*
* #ORM\Column(name="id", type="integer")
* #ORM\Id
* #ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* #var string
*
* #ORM\Column(name="name", type="string", length=255)
*/
private $name;
/**
* Get id
*
* #return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set name
*
* #param string $name
* #return Products
*/
public function setName($name)
{
$this->name = $name;
return $this;
}
/**
* Get name
*
* #return string
*/
public function getName()
{
return $this->name;
}
}
CustomersProducts.php
<?php
namespace AppBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use AppBundle\Entity\Customers;
use AppBundle\Entity\Products;
/**
* CustomersProducts
*
* #ORM\Table(name="customers_products")
* #ORM\Entity(repositoryClass="AppBundle\Repository\CustomersProductsRepository")
*/
class CustomersProducts
{
/**
* #ORM\ManyToOne(targetEntity="Customers", inversedBy="customers")
* #ORM\JoinColumn(name="customer_id", referencedColumnName="id")
*/
private $customers;
public function getCustomers()
{
return $this->customers;
}
public function setCustomers(Customers $customer) // Please add a Use statement on top of your document
{
$this->customers = $customer;
return $this;
}
/**
* #ORM\ManyToOne(targetEntity="Products", inversedBy="products")
* #ORM\JoinColumn(name="product_id", referencedColumnName="id")
*/
private $products;
public function getProducts()
{
return $this->products;
}
public function setProducts(Products $products) // Please add a Use statement on top of your document
{
var_dump($products->getName()); die();
$this->products = $products;
return $this;
}
/**
* #var int
*
* #ORM\Column(name="id", type="integer")
* #ORM\Id
* #ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* #var string
*
* #ORM\Column(name="version", type="string", length=255)
*/
private $version;
/**
* Get id
*
* #return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set version
*
* #param string $version
* #return CustomersProducts
*/
public function setVersion($version)
{
$this->version = $version;
return $this;
}
/**
* Get version
*
* #return string
*/
public function getVersion()
{
return $this->version;
}
}
CustomersProductsType.php
<?php
namespace AppBundle\Form;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
class CustomersProductsType extends AbstractType
{
/**
* #param FormBuilderInterface $builder
* #param array $options
*/
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('version')
->add('customers', 'entity', array(
'class' => 'AppBundle:Customers',
'multiple' =>false,
'property' => 'name',
))
->add('products', 'entity', array(
'class' => 'AppBundle:Products',
'multiple' =>true,
'property' => 'name',
))
;
}
/**
* #param OptionsResolver $resolver
*/
public function configureOptions(OptionsResolver $resolver)
{
$resolver->setDefaults(array(
'data_class' => 'AppBundle\Entity\CustomersProducts'
));
}
}
UPDATE:
After the change I'made from the suggestion now I get the following error:
Found entity of type Doctrine\Common\Collections\ArrayCollection on association AppBundle\Entity\CustomersProducts#products, but expecting AppBundle\Entity\Product

Answer 1

You have to rename entity Products to Product, because class that representing one database row (an entity) should have singular name.
Grammatically incorrect method name addProducts:
public function addProducts(Products $request)
refactor it to:
public function addProduct(Product $product) {
if ($this->products->contains($product)) {
return;
}
$this->products->add($product);
}
The same with remove method:
public function removeProducts(Products $request)
refactor to:
public function removeProduct(Product $product) {
if (!$this->products->contains($product)) {
return;
}
$this->products->removeElement($product);
}
Changes to CustomersProducts
/**
* #ORM\ManyToOne(targetEntity="Product", inversedBy="products")
* #ORM\JoinColumn(name="product_id", referencedColumnName="id")
*/
private $product;
public function getProduct()
{
return $this->product;
}
public function setProduct(Product $product)
{
$this->product = $product;
}
You can find similar example and explanation in the article