README

本捆绑包帮助您将 League 的 Fractal 集成到您的 Symfony 3/4/5 应用程序中

安装

步骤 1: 安装捆绑包

$ composer require dmytrof/fractal-bundle 

步骤 2: 启用捆绑包

Symfony 3

<?php
// app/AppKernel.php

public function registerBundles()
{
    $bundles = array(
        // ...
        new Dmytrof\FractalBundle\DmytrofFractalBundle(),
        // ...
    );
}

Symfony 4/5

<?php
    // config/bundles.php
    
    return [
        // ...
        Dmytrof\FractalBundle\DmytrofFractalBundle::class => ['all' => true],
    ];

用法

在开始使用此捆绑包之前，请先阅读官方的 Fractal 文档

1.基本用法

假设您有一些模型 文章

<?php

namespace App\Model;

use App\Model\Author;

class Article
{
    /**
     * @var int
     */
    protected $id;

    /**
     * @var Author
     */
    protected $author;

    /**
     * @var string
     */
    protected $title;

    /**
     * @var string
     */
    protected $body;

    /**
     * @var \DateTime
     */
    protected $publishedAt;

    /**
     * Returns id
     * @return int|null
     */
    public function getId(): ?int
    {
        return $this->id;
    }

    /**
     * Sets id
     * @param int|null $id
     * @return $this
     */
    public function setId(?int $id): Article
    {
        $this->id = $id;
        return $this;
    }

    /**
     * Returns author
     * @return Author|null
     */
    public function getAuthor(): ?Author
    {
        return $this->author;
    }

    /**
     * Sets author
     * @param Author|null $author
     * @return Article
     */
    public function setAuthor(?Author $author): Article
    {
        $this->author = $author;
        return $this;
    }

    // ...
    // Other Setters and Getters
    // ...

    /**
     * Returns published at date
     * @return \DateTime|null
     */
    public function getPublishedAt(): ?\DateTime
    {
        return $this->publishedAt;
    }

    /**
     * Sets published at date
     * @param \DateTime|null $publishedAt
     * @return Article
     */
    public function setPublishedAt(?\DateTime $publishedAt): Article
    {
        $this->publishedAt = $publishedAt;
        return $this;
    }
}

和 作者

<?php

namespace App\Model;

class Author
{
    /**
     * @var int
     */
    protected $id;

    /**
     * @var string
     */
    protected $firstName;

    /**
     * @var string
     */
    protected $lastName;

    /**
     * @var string
     */
    protected $email;

    /**
     * Returns id
     * @return int|null
     */
    public function getId(): ?int
    {
        return $this->id;
    }

    /**
     * Sets id
     * @param int|null $id
     * @return Author
     */
    public function setId(?int $id): Author
    {
        $this->id = $id;
        return $this;
    }

    // ...
    // Other Getters and Setters
    // ...
}

为您的实体创建转换器

AuthorTransformer

<?php

namespace App\FractalTransformer;

use App\Model\Author;
use Dmytrof\FractalBundle\Transformer\AbstractTransformer;

class AuthorTransformer extends AbstractTransformer
{
    // Model which is handled by this transformer
    protected const SUBJECT_CLASS = Author::class;

    /**
     * @var bool
     */
    protected $showShortInfo = false;

    /**
     * @return bool
     */
    public function isShowShortInfo(): bool
    {
        return $this->showShortInfo;
    }

    /**
     * Sets show short info
     * @param bool $showShortInfo
     * @return AuthorTransformer
     */
    public function setShowShortInfo(bool $showShortInfo = true): AuthorTransformer
    {
        $this->showShortInfo = $showShortInfo;
        return $this;
    }

    /**
     * Transforms Author to array
     * @param Author $subject
     * @return array
     */
    public function transformSubject($subject): array
    {
        $data = [
            'id' => $subject->getId(),
            'firstName' => $subject->getFirstName(),
            'lastName' => $this->isShowShortInfo() ? substr($subject->getLastName(), 0, 1).'.' : $subject->getLastName(),
        ];

        if (!$this->isShowShortInfo()) {
            $data['email'] = $subject->getEmail();
        }

        return $data;
    }
}

和 ArticleTransformer

<?php

namespace App\FractalTransformer;

use App\Model\Article;
use Dmytrof\FractalBundle\Transformer\AbstractTransformer;
use League\Fractal\Resource\{Item, ResourceInterface};

class ArticleTransformer extends AbstractTransformer
{
    // Model which is handled by this transformer
    protected const SUBJECT_CLASS = Article::class;

    protected $defaultIncludes = [
        'author'
    ];

    protected $availableIncludes = [
        'body',
    ];

    /**
     * Transforms Article to array
     * @param Article $subject
     * @return array
     */
    public function transformSubject($subject): array
    {
        return [
            'id' => $subject->getId(),
            'title' => $subject->getTitle(),
            'publishedAt' => $this->transformDateTime($subject->getPublishedAt()),
        ];
    }

    /**
     * Includes author
     * @param Article $article
     * @return Item
     */
    public function includeAuthor(Article $article): Item
    {
        return $this->item($article->getAuthor(), AuthorTransformer::class);
    }

    /**
     * Includes body
     * @param Article $article
     * @return ResourceInterface
     */
    public function includeBody(Article $article): ResourceInterface
    {
        return $this->primitive($article->getBody());
    }
}

更新控制器

<?php

namespace App\Controller\Api\v1;

use App\Model\Article;
use App\FractalTransformer\ArticleTransformer;
use Dmytrof\FractalBundle\Service\FractalManager;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\Routing\Annotation\Route;
use Symfony\Component\HttpFoundation\{Request, JsonResponse};

/**
 * @Route("/api/v2/articles")
 */
class ArticleController extends AbstractController
{
    /**
     * @Route("/{id<\d+>}", methods={"GET"})
     */
    public function getOne(int $id, Request $request, FractalManager $fractalManager)
    {
        $model = $this->getArticeById($id); // Some method to receive model
        
        $fractalManager
            ->parseIncludes($request->get('include', ''))
            ->parseExcludes($request->get('exclude', ''))
            ->parseFieldsets($request->get('fieldsets', []))
        ;

        return new JsonResponse([
            'data' => $fractalManager->getModelData($model, ArticleTransformer::class),
        ], JsonResponse::HTTP_OK);
    }
}