显示文章类别的名称
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【中文标题】显示文章类别的名称【英文标题】：Display the name of the category of an article 【发布时间】：2021-12-24 16:48:43 【问题描述】：我是 symfony 和 Twig 的新手。我可以按类别显示我的文章，但我不能显示文章的类别名称。 我想显示一篇文章的类别名称，但我不能。 知道我有一个 Category 实体和一个 Article 实体，我确实喜欢这样： 感谢您的帮助。
我的家庭控制器
<?php
namespace App\Controller;
use App\Entity\Article;
use App\Entity\Category;
use App\Repository\ArticleRepository;
use App\Repository\CategoryRepository;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Annotation\Route;
class HomeController extends AbstractController
private $repoArticle;
private $repoCategory;
public function __construct(ArticleRepository $repoArticle, CategoryRepository $repoCategory)
$this->repoArticle = $repoArticle;
$this->repoCategory = $repoCategory;
/**
* @Route("/", name="home")
*/
//HOME
public function index(CategoryRepository $repoCategory): Response
$repoArticle = $this->getDoctrine()->getRepository(Article::class);
$repoCategory = $this->getDoctrine()->getRepository(Category::class);
$categories = $repoCategory->findAll();
// dd($repoCategory);
$articles = $repoArticle->findAll();
// dd($articles);
return $this->render("home/index.html.twig", [
'articles' => $articles,
'categories' => $categories,
]);
//SHOW
/**
* @Route("/show/id", name="show")
*/
public function show($id): Response
$repoArticle = $this->getDoctrine()->getRepository(Article::class);
$article = $repoArticle->find($id);
// dd($articles);
if (!$article)
return $this->redirectToRoute('home');
return $this->render("show/index.html.twig", [
'article' => $article,
]);
//SHOW ARTICLE
/**
* @Route("/showArticles/id", name="show_article")
*/
public function showArticle(?Category $category, Article $article): Response
// $articles = $category->getArticles()->getValues();
// $catArticle = $article->getCategory()->getValues();
// dd($catArticle);
if($category)
$articles = $category->getArticles()->getValues();
else
$articles = null;
return $this->redirectToRoute('home');
$categories = $this->repoCategory->findAll();
$catArticle = $article->getCategory()->getValues();
return $this->render("home/index.html.twig", [
'articles' => $articles,
'categories' => $categories,
'catArticle' => $catArticle,
]);
我的 index.html.twig
% for article in articles %
<div class="col">
<div class="card p-0 col-md-4 mb-3" style="width: 25rem;">
<div class="cardImg">
<a href=" path('show', 'id':article.id) "><img src="/assets/uploads/articles/ article.image " class="card-img-top roundedImg" ></a>
<div class="caption">
% for category in categories %
% if category.articles | length >=1 %<span class="fontz-text glow">Category: category.name </span>
% else %
% endif %
% endfor %
</div>
</div>
<div class="card-body">
<div class="card-header pb-0">
<p class="date smallText mb-3">Publié le: article.createdAt | date("d/m/Y") à article.createdAt | date("H:i") par article.author </p>
<a href=" path('show', 'id':article.id) "><h5 class="card-title pb-2"> article.title | u.truncate(50, '...', false) </h5></a>
<p class="card-text txtDescription mb-3"> article.description | striptags | u.truncate(200, '...', false) </p>
</div>
# <a href="" class="btn btn-fill-out mt-3 mb-5 w-100">En savoir plus</a> #
</div>
</div>
</div>
% endfor %
我的实体文章
<?php
namespace App\Entity;
use App\Repository\ArticleRepository;
use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\Common\Collections\Collection;
use Doctrine\ORM\Mapping as ORM;
use Gedmo\Mapping\Annotation as Gedmo;
/**
* @ORM\Entity(repositoryClass=ArticleRepository::class)
*/
class Article
/**
* @ORM\Id
* @ORM\GeneratedValue
* @ORM\Column(type="integer")
*/
private $id;
/**
* @ORM\Column(type="string", length=255)
*/
private $title;
/**
* @ORM\Column(type="text")
*/
private $description;
/**
* @ORM\Column(type="datetime_immutable")
* @Gedmo\Timestampable(on="create")
*/
private $createdAt;
/**
* @ORM\Column(type="datetime_immutable")
* @Gedmo\Timestampable(on="update")
*/
private $updatedAt;
/**
* @ORM\Column(type="boolean")
*/
private $published;
/**
* @ORM\Column(type="string", length=255)
*/
private $slug;
/**
* @ORM\Column(type="string", length=255)
*/
private $tags;
/**
* @ORM\Column(type="string", length=255)
*/
private $image;
/**
* @ORM\ManyToMany(targetEntity=Category::class, inversedBy="articles")
*/
private $category;
/**
* @ORM\ManyToOne(targetEntity=User::class, inversedBy="articles")
* @ORM\JoinColumn(nullable=false)
*/
private $author;
public function __construct()
$this->category = new ArrayCollection();
public function getId(): ?int
return $this->id;
public function getTitle(): ?string
return $this->title;
public function setTitle(string $title): self
$this->title = $title;
return $this;
public function getDescription(): ?string
return $this->description;
public function setDescription(string $description): self
$this->description = $description;
return $this;
public function getCreatedAt(): ?\DateTimeImmutable
return $this->createdAt;
public function setCreatedAt(\DateTimeImmutable $createdAt): self
$this->createdAt = $createdAt;
return $this;
public function getUpdatedAt(): ?\DateTimeImmutable
return $this->updatedAt;
public function setUpdatedAt(\DateTimeImmutable $updatedAt): self
$this->updatedAt = $updatedAt;
return $this;
public function getPublished(): ?bool
return $this->published;
public function setPublished(bool $published): self
$this->published = $published;
return $this;
public function getSlug(): ?string
return $this->slug;
public function setSlug(string $slug): self
$this->slug = $slug;
return $this;
public function getTags(): ?string
return $this->tags;
public function setTags(string $tags): self
$this->tags = $tags;
return $this;
public function getImage(): ?string
return $this->image;
public function setImage(string $image): self
$this->image = $image;
return $this;
/**
* @return Collection|Category[]
*/
public function getCategory(): Collection
return $this->category;
public function addCategory(Category $category): self
if (!$this->category->contains($category))
$this->category[] = $category;
return $this;
public function removeCategory(Category $category): self
$this->category->removeElement($category);
return $this;
public function getAuthor(): ?User
return $this->author;
public function setAuthor(?User $author): self
$this->author = $author;
return $this;
我的实体类别
<?php
namespace App\Entity;
use App\Repository\CategoryRepository;
use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\Common\Collections\Collection;
use Doctrine\ORM\Mapping as ORM;
/**
* @ORM\Entity(repositoryClass=CategoryRepository::class)
*/
class Category
/**
* @ORM\Id
* @ORM\GeneratedValue
* @ORM\Column(type="integer")
*/
private $id;
/**
* @ORM\Column(type="string", length=255)
*/
private $name;
/**
* @ORM\Column(type="string", length=255, nullable=true)
*/
private $description;
/**
* @ORM\Column(type="string", length=255)
*/
private $image;
/**
* @ORM\ManyToMany(targetEntity=Article::class, mappedBy="category")
*/
private $articles;
public function __construct()
$this->articles = 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 getDescription(): ?string
return $this->description;
public function setDescription(?string $description): self
$this->description = $description;
return $this;
public function getImage(): ?string
return $this->image;
public function setImage(string $image): self
$this->image = $image;
return $this;
/**
* @return Collection|Article[]
*/
public function getArticles(): Collection
return $this->articles;
public function addArticle(Article $article): self
if (!$this->articles->contains($article))
$this->articles[] = $article;
$article->addCategory($this);
return $this;
public function removeArticle(Article $article): self
if ($this->articles->removeElement($article))
$article->removeCategory($this);
return $this;
public function __toString()
return $this->name;
【问题讨论】：
您能分享您的类别和文章实体吗？希望你已经在这两个实体之间建立了关系，如果这样的话，显示它会很容易 【参考方案1】：您的类别有很多对很多，因此显示所有文章类别将是这样的：
% for category in article.category %
<span class="fontz-text glow">Category: category.name </span>
% endfor %
对于一个类别，您可以这样做：
<span class="fontz-text glow">Category: article.category[0].name </span>
【讨论】：
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