Endpoint

Overview

Endpoint module is a framework which allows Drupal acts as a light endpoint.

The module was designed specifically for REST API. It contains a router that allows to follow REST style in your URLs. Here is an example:

GET /dogs
POST /dogs/create
DELETE /dogs/1
GET /dog/1
PUT /dog/1

Endpoint is really light, fast and flexible, that makes it a good solution for projects where Drupal role is mobile backend and single-page app backend.

Endpoint does not do anything itself but instead provides an API to other developers.

Prerequisites

Apache:
Add to your .htaccess file in the document root the following content:

# Rewrite API callback URLs of the form api.php?q=x.
RewriteCond %{REQUEST_URI} ^\/([a-z]{2}\/)?api\/.*
RewriteRule ^(.*)$ api.php?q=$1 [L,QSA]
RewriteCond %{QUERY_STRING} (^|&)q=(\/)?(\/)?api\/.*
RewriteRule .* api.php [L]

Nginx:
You may start from adding the following block to Nginx config:

# Rewrite API callback URLs of the form api.php?q=x.
location ^~ /api/ {
  location ~* ^/api/ {
    rewrite ^/(.*)$ /api.php?q=$1 last;
  }
}

Note: this code doesn't take into account API versions.

Development

Create api.php file with the following content in your site document root and modify it as you need:

/**
 * @file
 */

define('DRUPAL_ROOT', getcwd());
require_once DRUPAL_ROOT . '/sites/all/modules/contrib/endpoint/includes/router.inc';

$routes = array(
  'api/v1/foos' => array(
    'GET' => array(
      'callback' => 'my_module_foo_list',
      'anonymous'  => TRUE,
    ),
    'POST' => array(
      'callback' => 'my_module_foo_create',
    ),
  ),
  'api/v1/foo/(\w+)' => array(
    'GET' => array(
      'callback' => 'my_module_foo_get',
    ),
    'POST' => array(
      'include' => DRUPAL_ROOT . '/sites/all/modules/custom/another_module/includes/some_callback.inc',
      'callback' => 'my_module_foo_update',
    ),
  ),
);

endpoint_route(array(
  'debug' => TRUE,
  'routes' => $routes,
//  'authorize callback' => 'my_module_callback_authorize',
//  'error callback' => 'my_module_callback_error',
));

function my_module_foo_list() {
  // ...
  return array('foos' => $foo_collection);
}

function my_module_foo_create() {
  $data = endpoint_request_data();
  // ...
  return array('foo' => $foo, 'bar' => $bar);
}

function my_module_foo_get($id) {
  // ...
  return array('foo' => $foo, 'bar' => $bar);
}

function my_module_foo_update() {
  $data = endpoint_request_data();
  // ...
}

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