For Symfony 2 and Symfony 3, (*1)
, (*2)
Installation
Step 1: Download the Bundle, (*3)
Open a command console, enter your project directory and execute the
following command to download the latest stable version of this bundle:, (*4)
$ composer require nilportugues/jsonapi-bundle
Step 2: Enable the Bundle, (*5)
Then, enable the bundle by adding it to the list of registered bundles
in the app/AppKernel.php file of your project:, (*6)
<?php
// app/AppKernel.php
// ...
class AppKernel extends Kernel
{
public function registerBundles()
{
$bundles = array(
// ...
new NilPortugues\Symfony\JsonApiBundle\NilPortuguesSymfonyJsonApiBundle(),
);
// ...
}
// ...
}
Usage
Creating the mappings
Mapping directory, (*7)
Mapping files should be located at the app/config/serializer directory. This directory must be created., (*8)
It can be also be customized and placed elsewhere by editing the app/config/config.yml configuration file:, (*9)
# app/config/config.yml
nilportugues_json_api:
mappings:
- "%kernel.root_dir%/config/serializer/"
- @AppBundle/Product/config/Mappings
Mapping files, (*10)
The JSON-API transformer works by transforming an existing PHP object into its JSON representation. For each object, a mapping file is required., (*11)
Mapping files must be placed in the mappings directory. The expected mapping file format is .yml and will allow you to rename, hide and create links relating all of your data., (*12)
For instance, here's a quite complex Post object to demonstrate how it works:, (*13)
$post = new Post(
new PostId(9),
'Hello World',
'Your first post',
new User(
new UserId(1),
'Post Author'
),
[
new Comment(
new CommentId(1000),
'Have no fear, sers, your king is safe.',
new User(new UserId(2), 'Barristan Selmy'),
[
'created_at' => (new DateTime('2015/07/18 12:13:00'))->format('c'),
'accepted_at' => (new DateTime('2015/07/19 00:00:00'))->format('c'),
]
),
]
);
And the series of mapping files required:, (*14)
# app/config/serializer/acme_domain_dummy_post.yml
mapping:
class: Acme\Domain\Dummy\Post
alias: Message
aliased_properties:
author: author
title: headline
content: body
hide_properties: []
id_properties:
- postId
urls:
self: get_post ## @Route name
comments: get_post_comments ## @Route name
relationships:
author:
related: get_post_author ## @Route name
self: get_post_author_relationship ## @Route name
# app/config/serializer/acme_domain_dummy_value_object_post_id.yml
mapping:
class: Acme\Domain\Dummy\ValueObject\PostId
aliased_properties: []
hide_properties: []
id_properties:
- postId
urls:
self: get_post ## @Route name
relationships:
comment:
self: get_post_comments_relationship ## @Route name
# app/config/serializer/acme_domain_dummy_comment.yml
mapping:
class: Acme\Domain\Dummy\Comment
aliased_properties: []
hide_properties: []
id_properties:
- commentId
urls:
self: get_comment ## @Route name
relationships:
post:
self: get_post_comments_relationship ## @Route name
# app/config/serializer/acme_domain_dummy_value_object_comment_id.yml
mapping:
class: Acme\Domain\Dummy\ValueObject\CommentId
aliased_properties: []
hide_properties: []
id_properties:
- commentId
urls:
self: get_comment ## @Route name
relationships:
post:
self: get_post_comments_relationship ## @Route name
# app/config/serializer/acme_domain_dummy_user.yml
mapping:
class: Acme\Domain\Dummy\User
aliased_properties: []
hide_properties: []
id_properties:
- userId
urls:
self: get_user
friends: get_user_friends ## @Route name
comments: get_user_comments ## @Route name
# app/config/serializer/acme_domain_dummy_value_object_user_id.yml
mapping:
class: Acme\Domain\Dummy\ValueObject\UserId
aliased_properties: []
hide_properties: []
id_properties:
- userId
urls:
self: get_user ## @Route name
friends: get_user_friends ## @Route name
comments: get_user_comments ## @Route name
Outputing API Responses
It is really easy, just get an instance of the JsonApiSerializer from the Service Container and pass the object to its serialize() method. Output will be valid JSON-API., (*15)
Here's an example of a Post object being fetched from a Doctrine repository., (*16)
Finally, a helper trait, JsonApiResponseTrait is provided to write fully compilant responses wrapping the PSR-7 Response objects provided by the original JSON API Transformer library., (*17)
<?php
namespace AppBundle\Controller;
use NilPortugues\Symfony\JsonApiBundle\Serializer\JsonApiResponseTrait;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
class PostController extends Controller
{
use JsonApiResponseTrait;
/**
* @\Symfony\Component\Routing\Annotation\Route("/post/{postId}", name="get_post")
*
* @param $postId
* @return \Symfony\Component\HttpFoundation\Response
*/
public function getPostAction($postId)
{
$post = $this->get('doctrine.post_repository')->find($postId);
$serializer = $this->get('nil_portugues.serializer.json_api_serializer');
/** @var \NilPortugues\Api\JsonApi\JsonApiTransformer $transformer */
$transformer = $serializer->getTransformer();
$transformer->setSelfUrl($this->generateUrl('get_post', ['postId' => $postId], true));
$transformer->setNextUrl($this->generateUrl('get_post', ['postId' => $postId+1], true));
return $this->response($serializer->serialize($post));
}
}
Output:, (*18)
HTTP/1.1 200 OK
Cache-Control: private, max-age=0, must-revalidate
Content-type: application/vnd.api+json
{
"data": {
"type": "message",
"id": "9",
"attributes": {
"headline": "Hello World",
"body": "Your first post"
},
"links": {
"self": {
"href": "http://example.com/posts/9"
},
"comments": {
"href": "http://example.com/posts/9/comments"
}
},
"relationships": {
"author": {
"links": {
"self": {
"href": "http://example.com/posts/9/relationships/author"
},
"related": {
"href": "http://example.com/posts/9/author"
}
},
"data": {
"type": "user",
"id": "1"
}
}
}
},
"included": [
{
"type": "user",
"id": "1",
"attributes": {
"name": "Post Author"
},
"links": {
"self": {
"href": "http://example.com/users/1"
},
"friends": {
"href": "http://example.com/users/1/friends"
},
"comments": {
"href": "http://example.com/users/1/comments"
}
}
},
{
"type": "user",
"id": "2",
"attributes": {
"name": "Barristan Selmy"
},
"links": {
"self": {
"href": "http://example.com/users/2"
},
"friends": {
"href": "http://example.com/users/2/friends"
},
"comments": {
"href": "http://example.com/users/2/comments"
}
}
},
{
"type": "comment",
"id": "1000",
"attributes": {
"dates": {
"created_at": "2015-08-13T21:11:07+02:00",
"accepted_at": "2015-08-13T21:46:07+02:00"
},
"comment": "Have no fear, sers, your king is safe."
},
"relationships": {
"user": {
"data": {
"type": "user",
"id": "2"
}
}
},
"links": {
"self": {
"href": "http://example.com/comments/1000"
}
}
}
],
"links": {
"self": {
"href": "http://example.com/posts/9"
},
"next": {
"href": "http://example.com/posts/10"
}
},
"jsonapi": {
"version": "1.0"
}
}
Request objects
JSON API comes with a helper Request class, NilPortugues\Api\JsonApi\Http\Request\Request(ServerRequestInterface $request), implementing the PSR-7 Request Interface. Using this request object will provide you access to all the interactions expected in a JSON API:, (*19)
JSON API Query Parameters:
-
&fields[resource]=field1,field2 will only show the specified fields for a given resource.
-
&include=resource show the relationship for a given resource.
-
&include=resource.resource2 show the relationship field for those depending on resource2.
-
&sort=field1,-field2 sort by field2 as DESC and field1 as ASC.
-
&sort=-field1,field2 sort by field1 as DESC and field2 as ASC.
-
&page[number] will return the current page elements in a page-based pagination strategy.
-
&page[size] will return the total amout of elements in a page-based pagination strategy.
-
&page[limit] will return the limit in a offset-based pagination strategy.
-
&page[offset] will return the offset value in a offset-based pagination strategy.
-
&page[cursor] will return the cursor value in a cursor-based pagination strategy.
-
&filter will return data passed in the filter param.
NilPortugues\Api\JsonApi\Http\Request\Request
Given the query parameters listed above, Request implements helper methods that parse and return data already prepared., (*20)
namespace \NilPortugues\Api\JsonApi\Http\Request;
class Request
{
public function __construct(ServerRequestInterface $request = null) { ... }
public function getIncludedRelationships() { ... }
public function getSort() { ... }
public function getPage() { ... }
public function getFilters() { ... }
public function getFields() { ... }
}
Response objects (JsonApiResponseTrait)
The following JsonApiResponseTrait methods are provided to return the right headers and HTTP status codes are available:, (*21)
private function errorResponse($json);
private function resourceCreatedResponse($json);
private function resourceDeletedResponse($json);
private function resourceNotFoundResponse($json);
private function resourcePatchErrorResponse($json);
private function resourcePostErrorResponse($json);
private function resourceProcessingResponse($json);
private function resourceUpdatedResponse($json);
private function response($json);
private function unsupportedActionResponse($json);
Integration with NelmioApiDocBundleBundle
The NelmioApiDocBundle is a very well known bundle used to document APIs. Integration with the current bundle is terrible easy., (*22)
Here's an example following the PostContoller::getPostAction() provided before:, (*23)
<?php
namespace AppBundle\Controller;
use NilPortugues\Symfony\JsonApiBundle\Serializer\JsonApiResponseTrait;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
class PostController extends Controller
{
use JsonApiResponseTrait;
/**
* Get a Post by its identifier. Will return Post, Comments and User data.
*
* @Nelmio\ApiDocBundle\Annotation\ApiDoc(
* resource=true,
* description="Get a Post by its unique id",
* )
*
* @Symfony\Component\Routing\Annotation\Route("/post/{postId}", name="get_post")
* @Sensio\Bundle\FrameworkExtraBundle\Configuration\Method({"GET"})
*
* @param $postId
* @return \Symfony\Component\HttpFoundation\Response
*/
public function getPostAction($postId)
{
$post = $this->get('doctrine.post_repository')->find($postId);
$serializer = $this->get('nil_portugues.serializer.json_api_serializer');
/** @var \NilPortugues\Api\JsonApi\JsonApiTransformer $transformer */
$transformer = $serializer->getTransformer();
$transformer->setSelfUrl($this->generateUrl('get_post', ['postId' => $postId], true));
$transformer->setNextUrl($this->generateUrl('get_post', ['postId' => $postId+1], true));
return $this->response($serializer->serialize($post));
}
}
And the recommended configuration to be added in app/config/config.yml, (*24)
#app/config/config.yml
nelmio_api_doc:
sandbox:
authentication:
name: access_token
delivery: http
type: basic
custom_endpoint: false
enabled: true
endpoint: ~
accept_type: ~
body_format:
formats: []
default_format: form
request_format:
formats:
json: application/vnd.api+json
method: accept_header
default_format: json
entity_to_choice: false
Quality
To run the PHPUnit tests at the command line, go to the tests directory and issue phpunit., (*25)
This library attempts to comply with PSR-1, PSR-2, PSR-4 and PSR-7., (*26)
If you notice compliance oversights, please send a patch via Pull Request., (*27)
Contribute
Contributions to the package are always welcome!, (*28)
Support
Get in touch with me using one of the following means:, (*29)
Authors
License
The code base is licensed under the MIT license., (*30)
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