与Symfony 5关联ManyToMany：不保存

分类：编程问答

如何解决与Symfony 5关联ManyToMany：不保存

对于我的项目，我创建了2个实体：配方和成分。他们是一个多对多关系。 mysql shema

我从控制台生成了所有内容（实体和CRUD）。但是，我无法保存食谱的配料，“成分”字段不保存任何内容，仅保存日期和名称。

我尝试在我的实体中添加“ cascade = {“ persist”}“，但是它不起作用。 预先感谢您的帮助！

Ingredient.php 

<?php

namespace App\Entity;

use App\Repository\IngredientRepository;
use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\Common\Collections\Collection;
use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Entity(repositoryClass=IngredientRepository::class)
 */
class Ingredient
{
    /**
     * @ORM\Id()
     * @ORM\GeneratedValue()
     * @ORM\Column(type="integer")
     */
    private $id;

    /**
     * @ORM\Column(type="string",length=255)
     */
    private $name;

    /**
     * @ORM\ManyToMany(targetEntity=Recette::class,inversedBy="ingredients",cascade={"persist"})
     */
    private $recette;

    public function __construct()
    {
        $this->recette = new ArrayCollection();
    }

    public function getId(): ?int
    {
        return $this->id;
    }

    public function getName(): ?string
    {
        return $this->name;
    }

    public function setName(string $name): self
    {
        $this->name = $name;

        return $this;
    }

    /**
     * @return Collection|Recette[]
     */
    public function getRecette(): Collection
    {
        return $this->recette;
    }

    public function addRecette(Recette $recette): self
    {
        if (!$this->recette->contains($recette)) {
            $this->recette[] = $recette;
        }

        return $this;
    }

    public function removeRecette(Recette $recette): self
    {
        if ($this->recette->contains($recette)) {
            $this->recette->removeElement($recette);
        }

        return $this;
    }
    public function __toString()
    {
        return $this->name;

    }
}

IngredientController.php 

<?php

namespace App\Controller;

use App\Entity\Ingredient;
use App\Form\IngredientType;
use App\Repository\IngredientRepository;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Annotation\Route;

/**
 * @Route("/ingredient")
 */
class IngredientController extends AbstractController
{
    /**
     * @Route("/",name="ingredient_index",methods={"GET"})
     */
    public function index(IngredientRepository $ingredientRepository): Response
    {
        return $this->render('ingredient/index.html.twig',[
            'ingredients' => $ingredientRepository->findAll(),]);
    }

    /**
     * @Route("/new",name="ingredient_new",methods={"GET","POST"})
     */
    public function new(Request $request): Response
    {
        $ingredient = new Ingredient();
        $form = $this->createForm(IngredientType::class,$ingredient);
        $form->handleRequest($request);

        if ($form->isSubmitted() && $form->isValid()) {
            $entityManager = $this->getDoctrine()->getManager();
            $entityManager->persist($ingredient);
            $entityManager->flush();

            return $this->redirectToRoute('ingredient_index');
        }

        return $this->render('ingredient/new.html.twig',[
            'ingredient' => $ingredient,'form' => $form->createView(),]);
    }

    /**
     * @Route("/{id}",name="ingredient_show",methods={"GET"})
     */
    public function show(Ingredient $ingredient): Response
    {
        return $this->render('ingredient/show.html.twig',]);
    }

    /**
     * @Route("/{id}/edit",name="ingredient_edit","POST"})
     */
    public function edit(Request $request,Ingredient $ingredient): Response
    {
        $form = $this->createForm(IngredientType::class,$ingredient);
        $form->handleRequest($request);

        if ($form->isSubmitted() && $form->isValid()) {
            $this->getDoctrine()->getManager()->flush();

            return $this->redirectToRoute('ingredient_index');
        }

        return $this->render('ingredient/edit.html.twig',name="ingredient_delete",methods={"DELETE"})
     */
    public function delete(Request $request,Ingredient $ingredient): Response
    {
        if ($this->isCsrfTokenValid('delete'.$ingredient->getId(),$request->request->get('_token'))) {
            $entityManager = $this->getDoctrine()->getManager();
            $entityManager->remove($ingredient);
            $entityManager->flush();
        }

        return $this->redirectToRoute('ingredient_index');
    }
}

Recette.php 

<?php

namespace App\Entity;

use App\Repository\RecetteRepository;
use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\Common\Collections\Collection;
use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Entity(repositoryClass=RecetteRepository::class)
 */
class Recette
{
    /**
     * @ORM\Id()
     * @ORM\GeneratedValue()
     * @ORM\Column(type="integer")
     */
    private $id;

    /**
     * @ORM\Column(type="string",length=255)
     */
    private $name;

    /**
     * @ORM\Column(type="datetime")
     */
    private $publishedAt;

    /**
     * @ORM\ManyToMany(targetEntity=Ingredient::class,mappedBy="recette",cascade={"persist"})
     */
    private $ingredients;

    public function __construct()
    {
        $this->ingredients = new ArrayCollection();
    }

    public function getId(): ?int
    {
        return $this->id;
    }

    public function getName(): ?string
    {
        return $this->name;
    }

    public function setName(string $name): self
    {
        $this->name = $name;

        return $this;
    }

    public function getPublishedAt(): ?\DateTimeInterface
    {
        return $this->publishedAt;
    }

    public function setPublishedAt(\DateTimeInterface $publishedAt): self
    {
        $this->publishedAt = $publishedAt;

        return $this;
    }

    /**
     * @return Collection|Ingredient[]
     */
    public function getIngredients(): Collection
    {
        return $this->ingredients;
    }

    public function addIngredient(Ingredient $ingredient): self
    {
        if (!$this->ingredients->contains($ingredient)) {
            $this->ingredients[] = $ingredient;
            $ingredient->addRecette($this);
        }

        return $this;
    }

    public function removeIngredient(Ingredient $ingredient): self
    {
        if ($this->ingredients->contains($ingredient)) {
            $this->ingredients->removeElement($ingredient);
            $ingredient->removeRecette($this);
        }

        return $this;
    }
}

RecetteController.php 

<?php

namespace App\Controller;

use App\Entity\Recette;
use App\Form\RecetteType;
use App\Repository\RecetteRepository;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Annotation\Route;

/**
 * @Route("/recette")
 */
class RecetteController extends AbstractController
{
    /**
     * @Route("/",name="recette_index",methods={"GET"})
     */
    public function index(RecetteRepository $recetteRepository): Response
    {
        return $this->render('recette/index.html.twig',[
            'recettes' => $recetteRepository->findAll(),name="recette_new","POST"})
     */
    public function new(Request $request): Response
    {
        $recette = new Recette();
        $form = $this->createForm(RecetteType::class,$recette);
        $form->handleRequest($request);

        if ($form->isSubmitted() && $form->isValid()) {
            $entityManager = $this->getDoctrine()->getManager();
            $entityManager->persist($recette);
            $entityManager->flush();

            return $this->redirectToRoute('recette_index');
        }

        return $this->render('recette/new.html.twig',[
            'recette' => $recette,name="recette_show",methods={"GET"})
     */
    public function show(Recette $recette): Response
    {
        return $this->render('recette/show.html.twig',name="recette_edit",Recette $recette): Response
    {
        $form = $this->createForm(RecetteType::class,$recette);
        $form->handleRequest($request);

        if ($form->isSubmitted() && $form->isValid()) {
            $this->getDoctrine()->getManager()->flush();

            return $this->redirectToRoute('recette_index');
        }

        return $this->render('recette/edit.html.twig',name="recette_delete",Recette $recette): Response
    {
        if ($this->isCsrfTokenValid('delete'.$recette->getId(),$request->request->get('_token'))) {
            $entityManager = $this->getDoctrine()->getManager();
            $entityManager->remove($recette);
            $entityManager->flush();
        }

        return $this->redirectToRoute('recette_index');
    }
}

RecetteType.php 

<?php

namespace App\Form;

use App\Entity\Recette;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;

class RecetteType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder,array $options)
    {
        $builder
            ->add('name')
            ->add('publishedAt')
            ->add('ingredients')
        ;
    }

    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults([
            'data_class' => Recette::class,]);
    }
}

解决方法

在ManyToMany关系中，单向删除/添加无效。 对于这种manyToMany关系，您必须从两个实体调用remove / add方法 $ recette-> addIngredient（$ ingredients）; $ Ingredients-> addRecettes（$ recette）;

,

应该有另一个名为“ingredient_recipe”的表。多对多关系项将保存在这里。

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