【发布时间】：2021-06-25 19:22:45
【问题描述】：
我是 Symfony 的初学者，这是我的问题。
更准确地说，我的数据库中有两个表。第一个称为“post”，另一个称为“article”。 post表是article的父实体，这意味着article实体继承自post实体。我想要的是加入这两个表以从我的数据库中获取数据。
但是，在阅读了关于映射继承的学说和 symfony 文档后，我仍然无法解决我的问题。
你能帮我解决这个问题吗？
注意：这是我的代码
文章分类：
<?php
namespace App\Entity;
use Doctrine\ORM\Mapping as ORM;
/**
* Articles
*
* @ORM\Table(name="articles")
* @ORM\Entity(repositoryClass="App\Repository\ArticlesRepository")
*/
class Articles
{
/**
* @var int
*
* @ORM\Column(name="id", type="integer", nullable=false)
* @ORM\Id
* @ORM\GeneratedValue(strategy="IDENTITY")
*/
private $id;
/**
* @var int
*
* @ORM\Column(name="post", type="integer", nullable=false )
* @ORM\GeneratedValue(strategy="IDENTITY")
*/
private $post;
/**
* @ORM\Column(type="string", length=255)
*/
private $themes;
/**
* Articles constructor.
* @param int $post
*/
public static $themeAvailable = [
0 => "Environnement",
1 => "Economie",
2 => "Science et technologie",
3 => "Loisir",
4 => "Culture générale",
5 => "Art",
6 => "Sport"
];
public function getId(): ?int
{
return $this->id;
}
public function getPost(): ?int
{
return $this->post;
}
public function getThemes(): ?string
{
return $this->themes;
}
public function setThemes(string $themes): self
{
$this->themes = $themes;
return $this;
}
public function setPost(int $post)
{
$this->post = $post;
}
}
发布类：
<?php
namespace App\Entity;
use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Validator\Constraints as Assert;
/**
* Posts
*
* @ORM\Table(name="posts")
* @ORM\Entity(repositoryClass="App\Repository\PostsRepository")
*/
class Posts
{
/**
* @var int
*
* @ORM\Column(name="id", type="integer", nullable=false)
* @ORM\Id
* @ORM\GeneratedValue(strategy="IDENTITY")
*/
private $id;
/**
* @var int
*
* @ORM\Column(name="author", type="integer", nullable=false)
* @ORM\GeneratedValue(strategy="IDENTITY")
*/
private $author;
/**
* @var string
* @Assert\NotBlank()
* @ORM\Column(name="title", type="string", length=255, nullable=false)
*/
private $title;
/**
* @var string
* @Assert\NotBlank()
* @ORM\Column(name="content", type="text", length=65535, nullable=false)
*/
private $content;
/**
* @var string
* @Assert\File(
* maxSize = "20M",
* maxSizeMessage = "La taille du fichier trop importante. Minimum autorisé : 20 Mo.",
* mimeTypes = {"image/svg","image/png", "image/jpg", "image/jpeg", "image/gif" },
* mimeTypesMessage = "Format du fichier incorrecte. Formats autorisés : svg, png, jpg, jpeg, gif.",
* disallowEmptyMessage = "Veuillez importer une image supérieur à 0 Mo."
* )
* @ORM\Column(name="image", type="blob", length=65535, nullable=false)
*/
private $image;
/**
* @var \DateTime
*
* @ORM\Column(name="creation_date", type="datetime", nullable=false, options={"default"="CURRENT_TIMESTAMP"})
*/
private $creationDate;
/**
* Posts constructor.
*/
public function __construct()
{
$this->creationDate = new \DateTime();
}
public function getId(): ?int
{
return $this->id;
}
public function getAuthor(): ?int
{
return $this->author;
}
public function getTitle(): ?string
{
return $this->title;
}
public function setTitle(string $title): self
{
$this->title = $title;
return $this;
}
public function getContent(): ?string
{
return $this->content;
}
public function setContent(string $content): self
{
$this->content = $content;
return $this;
}
public function getImage(): string
{
return $this->image;
}
public function setImage($image): self
{
$this->image = $image;
return $this;
}
public function getCreationDate(): ?\DateTimeInterface
{
return $this->creationDate;
}
public function setCreationDate(\DateTimeInterface $creationDate): self
{
$this->creationDate = $creationDate;
return $this;
}
public function setAuthor(int $author)
{
$this->author = $author;
}
}
我的仓库：
public function findAllArticle()
{
return $this->createQueryBuilder('a')
->join('a.post',
'p')
->addSelect('p')
->getQuery()
->getResult();
}
这是我的控制器：
<?php
namespace App\Controller;
use App\Entity\Articles;
use App\Entity\Posts;
use App\Form\PostsArticleType;
use Doctrine\ORM\EntityManagerInterface;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Annotation\Route;
class PostArticleController extends \Symfony\Bundle\FrameworkBundle\Controller\AbstractController
{
/**
* @var EntityManagerInterface
*/
private $em;
/**
* ArticleController constructor.
* @param EntityManagerInterface $em
*/
public function __construct(EntityManagerInterface $em)
{
$this->em = $em;
}
/**
* @Route("/post/create", name="index")
* @return Response
*/
public function index(): Response
{
return $this->render('post/index.html.twig');
}
/**
* @Route("/post/article/show", name="showArticle")
* @return Response
*/
public function show(): Response
{
$articles = $this->getDoctrine()
->getManager()
->getRepository(Articles::class)
->findAllArticle();
return $this->render('post/showArticle.html.twig', array('article' => $articles));
}
/**
* @Route("/post/article/new", name="newArticle")
* @param Request $request
* @return Response
*/
public function new(Request $request): Response
{
$post = new Posts();
$article = new Articles();
$post->setAuthor(1);
$form = $this->createForm(PostsArticleType::class, $post);
$form->handleRequest($request);
if ($form->isSubmitted() && $form->isValid())
{
$this->em->persist($post);
$this->em->flush();
$article->setPost($post->getId());
$themes = $form->get('themes')->getData();
$article->setThemes(implode(',', $themes));
$this->em->persist($article);
$this->em->flush();
return $this->redirectToRoute('home.html.twig');
}
return $this->render('post/CreateArticle.html.twig', ['form' => $form->createView()]);
}
}
【问题讨论】：
标签： php mysql symfony join doctrine-orm