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Symfony JSON-API Transformer Bundle

For Symfony 2 and Symfony 3

• Installation
• Usage
  • Creating the mappings
• Outputing API Responses
  • JSON API Requests
  • JSON API Responses
• Integration with NelmioApiDocBundleBundle
• Quality
• Contribute
• Support
• Authors
• License

Installation

Step 1: Download the Bundle

Open a command console, enter your project directory and execute the following command to download the latest stable version of this bundle:

Step 2: Enable the Bundle

Then, enable the bundle by adding it to the list of registered bundles in the app/AppKernel.php file of your project:

Usage

Creating the mappings

Mapping directory

Mapping files should be located at the app/config/serializer directory. This directory must be created.

It can be also be customized and placed elsewhere by editing the app/config/config.yml configuration file:

Mapping files

The JSON-API transformer works by transforming an existing PHP object into its JSON representation. For each object, a mapping file is required.

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.

For instance, here's a quite complex Post object to demonstrate how it works:

And the series of mapping files required:

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.

Here's an example of a Post object being fetched from a Doctrine repository.

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.

Output:

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:

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.

Response objects (JsonApiResponseTrait)

The following JsonApiResponseTrait methods are provided to return the right headers and HTTP status codes are available:

Integration with NelmioApiDocBundleBundle

The NelmioApiDocBundle is a very well known bundle used to document APIs. Integration with the current bundle is terrible easy.

Here's an example following the PostContoller::getPostAction() provided before:

And the recommended configuration to be added in app/config/config.yml

Quality

To run the PHPUnit tests at the command line, go to the tests directory and issue phpunit.

This library attempts to comply with PSR-1, PSR-2, PSR-4 and PSR-7.

If you notice compliance oversights, please send a patch via Pull Request.

Contribute

Contributions to the package are always welcome!

• Report any bugs or issues you find on the issue tracker.
• You can grab the source code at the package's Git repository.

Support

Get in touch with me using one of the following means:

• Emailing me at [email protected]
• Opening an Issue
• Using Gitter:

Authors

• Nil Portugués Calderó
• The Community Contributors

License

The code base is licensed under the MIT license.