README

This plugin provides basic support for building REST API services in your CakePHP 3 application.

Requirements

This plugin has the following requirements:

• CakePHP 3.0.0 or greater.
• PHP 5.4.16 or greater.

Installation

You can install this plugin into your CakePHP application using composer.

The recommended way to install composer packages is:

composer require pejonic/cakephp-3-rest-api

After installation, Load the plugin

Plugin::load('RestApi', ['bootstrap' => true]);

Or, you can load the plugin using the shell command

$ bin/cake plugin load -b RestApi

Usage

You just need to create your API related controller and extend it to ApiController instead of default AppController. You just need to set you results in apiResponse variable and your response code in httpStatusCode variable. For example,

namespace App\Controller;

use RestApi\Controller\ApiController;

/**
 * Foo Controller
 */
class FooController extends ApiController
{

    /**
     * bar method
     *
     */
    public function bar()
    {
		// your action logic

		// Set the HTTP status code. By default, it is set to 200
		$this->httpStatusCode = 200;

		// Set the response
		$this->apiResponse['you_response'] = 'your response data';
    }
}

You can define your logic in your action function as per your need. For above example, you will get following response in json format,

{"status":"OK","result":{"you_response":"your response data"}}

The URL for above example will be http://yourdomain.com/foo/bar. You can customize it by setting the routes in APP/config/routes.php.

Simple :)

Configurations

cors

As of now, this plugin provides configuration for CORS requests. By default, cors requests are enabled and allowed from all domains. You can overwrite these settings by creating config file at APP/config/api.php . The content of file will look like,

<?php
return [
    'ApiRequest' => [
        'cors' => [
            'enabled' => true,
            'origin' => '*'
        ]
    ]
];

To disable cors request, set enabled flag to false. To allow requests from specific domains, set them in origin option like,

<?php
return [
    'ApiRequest' => [
        'cors' => [
            'enabled' => true,
            'origin' => ['localhost', 'www.example.com', '*.example.com']
        ]
    ]
];

Response format

The default response format of API is json and its structure is defined as below.

{
  "status": "OK",
  "result": {
    //your result data
  }
}

If you have set httpResponseCode to any value other that 200, the status value will be NOK otherwise OK. In case of exceptions, it will be handled automatically and set the appropriate status code.

Examples

Below are few examples to understand how this plugin works.

Retrieve articles

Let's create an API which returns a list of articles with basic details like id and title. Our controller will look like,

<?php

namespace App\Controller;

use RestApi\Controller\ApiController;

/**
 * Articles Controller
 *
 * @property \App\Model\Table\ArticlesTable $Articles
 */
class ArticlesController extends ApiController
{

    /**
     * index method
     *
     */
    public function index()
    {
        $articles = $this->Articles->find('all')
            ->select(['id', 'title'])
            ->toArray();

        $this->apiResponse['articles'] = $articles;
    }
}

The response of above API call will look like,

{
  "status": "OK",
  "result": {
    "articles": [
      {
        "id": 1,
        "title": "Lorem ipsum"
      },
      {
        "id": 2,
        "title": "Donec hendrerit"
      }
    ]
  }
}

Exception handling

This plugin will handle the exceptions being thrown from your action. For example, if you API method only allows POST method and someone makes a GET request, it will generate NOK response with proper HTTP response code. For example,

<?php

namespace App\Controller;

use RestApi\Controller\ApiController;

/**
 * Foo Controller
 *
 */
class FooController extends ApiController
{

    /**
     * bar method
     *
     */
    public function restricted()
    {
        $this->request->allowMethod('post');
        // your other logic will be here
        // and finally set your response
        // $this->apiResponse['you_response'] = 'your response data';
    }
}

The response will look like,

{"status":"NOK","result":{"message":"Method Not Allowed"}}

Another example of throwing an exception,

<?php

namespace App\Controller;

use Cake\Network\Exception\NotFoundException;
use RestApi\Controller\ApiController;

/**
 * Foo Controller
 *
 */
class FooController extends ApiController
{

    /**
     * error method
     *
     */
    public function error()
    {
        $throwException = true;

        if ($throwException) {
            throw new NotFoundException();
        }

        // your other logic will be here
        // and finally set your response
        // $this->apiResponse['you_response'] = 'your response data';
    }
}

And the response will be,

{"status":"NOK","result":{"message":"Not Found"}}

Reporting Issues

If you have a problem with this plugin or any bug, please open an issue on GitHub.