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 # cakephp-cors
-A CakePHP (3.3.x) plugin for activate cors domain in your application
+
+A CakePHP (3.3.x) plugin for activate cors domain in your application.
+
+[Learn more about CORS](https://developer.mozilla.org/en-US/docs/Web/HTTP/Access_control_CORS)
+
+## Requirements
+
+- PHP version 5.4.16 or higher
+- CakePhp 3.3 or higher
+
+## Installation
+
+You can install this plugin into your CakePHP application using [composer](http://getcomposer.org).
+
+The recommended way to install composer packages is:
+
+```
+composer require ozee31/cakephp-cors
+```
+
+## Quick Start
+
+Loading the Plugin
+
+```PHP
+  // In config/bootstrap.php
+  Plugin::load('Cors', ['bootstrap' => true, 'routes' => false]);
+```
+
+By default the plugin authorize cors for all origins, all methods and all headers and caches all for one day.
+
+## Configuration
+
+### Default configuration
+
+```PHP
+<?php
+[
+    'AllowOrigin' => true, // accept all origin
+    'AllowCredentials' => true,
+    'AllowMethods' => ['GET', 'POST', 'PUT', 'DELETE'], // accept all HTTP methods
+    'AllowHeaders' => true, // accept all headers
+    'ExposeHeaders' => false, // don't accept personal headers
+    'MaxAge' => 86400, // cache for 1 day
+    'exceptionRenderer' => 'Cors\Error\AppExceptionRenderer', // Use ExeptionRenderer class of plugin
+]
+```
+
+### Change config
+
+In `app.php` add :
+
+```PHP
+'Cors' => [
+    // My Config
+]
+```
+
+#### AllowOrigin ([Access-Control-Allow-Origin](https://developer.mozilla.org/en-US/docs/Web/HTTP/Access_control_CORS#Access-Control-Allow-Origin))
+
+A returned resource may have one Access-Control-Allow-Origin header, with the following syntax:
+
+```PHP
+'Cors' => [
+    // Accept all origins
+    'AllowOrigin' => true,
+    // OR
+    'AllowOrigin' => '*',
+
+    // Accept one origin
+    'AllowOrigin' => 'http://flavienbeninca.fr'
+
+    // Accept many origins
+    'AllowOrigin' => ['http://flavienbeninca.fr', 'http://google.com']
+]
+```
+
+#### AllowCredentials ([Access-Control-Allow-Credentials](https://developer.mozilla.org/en-US/docs/Web/HTTP/Access_control_CORS#Access-Control-Allow-Credentials))
+
+The Access-Control-Allow-Credentials header Indicates whether or not the response to the request can be exposed when the credentials flag is true.  When used as part of a response to a preflight request, this indicates whether or not the actual request can be made using credentials. Note that simple GET requests are not preflighted, and so if a request is made for a resource with credentials, if this header is not returned with the resource, the response is ignored by the browser and not returned to web content.
+
+```PHP
+'Cors' => [
+    'AllowCredentials' => true,
+    // OR
+    'AllowCredentials' => false,
+]
+```
+
+#### AllowMethods ([Access-Control-Allow-Methods](https://developer.mozilla.org/en-US/docs/Web/HTTP/Access_control_CORS#Access-Control-Allow-Methods))
+
+```PHP
+'Cors' => [
+    // string
+    'AllowMethods' => 'POST',
+    // OR array
+    'AllowCredentials' => ['GET', 'POST'],
+]
+```
+
+#### AllowHeaders ([Access-Control-Allow-Headers](https://developer.mozilla.org/en-US/docs/Web/HTTP/Access_control_CORS#Access-Control-Allow-Headers))
+
+The Access-Control-Allow-Headers header is used in response to a preflight request to indicate which HTTP headers can be used when making the actual request.
+
+```PHP
+'Cors' => [
+    // accept all headers
+    'AllowHeaders' => true,
+
+    // accept just authorization
+    'AllowHeaders' => 'authorization',
+
+    // accept many headers
+    'AllowHeaders' => ['authorization', 'other-header'],
+]
+```
+
+#### ExposeHeaders ([Access-Control-Expose-Headers](https://developer.mozilla.org/en-US/docs/Web/HTTP/Access_control_CORS#Access-Control-Expose-Headers))
+
+The Access-Control-Expose-Headers header lets a server whitelist headers that browsers are allowed to access. For example:
+
+```PHP
+'Cors' => [
+    // nothing
+    'ExposeHeaders' => false,
+
+    // string
+    'ExposeHeaders' => 'X-My-Custom-Header',
+
+    // array
+    'ExposeHeaders' => ['X-My-Custom-Header', 'X-Another-Custom-Header'],
+]
+```
+
+#### MaxAge ([Access-Control-Max-Age](https://developer.mozilla.org/en-US/docs/Web/HTTP/Access_control_CORS#Access-Control-Max-Age))
+
+The  Access-Control-Max-Age header indicates how long the results of a preflight request can be cached. For an example of a preflight request, see the above examples.
+
+```PHP
+'Cors' => [
+    // no cache
+    'MaxAge' => false,
+
+    // 1 hour
+    'MaxAge' => 3600,
+
+    // 1 day
+    'MaxAge' => 86400,
+]
+```
+
+#### exceptionRenderer
+
+This option overload default `exceptionRenderer` in `app.php`.
+
+[Read more](http://book.cakephp.org/3.0/en/development/errors.html#extend-the-baseerrorhandler)