140 lines
3.5 KiB
PHP
140 lines
3.5 KiB
PHP
<?php
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/**
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* Contao Open Source CMS
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* Copyright (C) 2005-2011 Leo Feyer
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*
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* Formerly known as TYPOlight Open Source CMS.
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*
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* This program is free software: you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation, either
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* version 3 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program. If not, please visit the Free
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* Software Foundation website at <http://www.gnu.org/licenses/>.
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*
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* PHP version 5
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* @copyright Leo Unglaub 2012
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* @author Leo Unglaub <leo@leo-unglaub.net>
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* @package simple_ajax
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* @license LGPL
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*/
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// simple trick for Contao < 2.10
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$arrPost = $_POST;
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unset($_POST);
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// inizialize the contao framework
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define('TL_MODE', 'FE');
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require('../../../../initialize.php');
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// write the post data back into the array
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$_POST = $arrPost;
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/**
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* Class RateitAjax
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* Contain methods to catch ajax requests and send responses back to the client.
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*
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* Description
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* ```````````
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*
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* The usage of the RateitAjax extensions is very easy. The extension provides
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* the hook $GLOBALS['TL_HOOKS']['rateitAjax'] for extension developers. You
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* simply have to register your class/method and the extension will call
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* your class if there is an incomming ajax request.
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*
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* You simply have to deside if it's an ajax request for your module and return
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* the data you want.
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*
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* There are a few thinks you should know about the extension:
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* * YOU have the full controll over the response. That also means
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* that you have to set the correct header.
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* * YOU have to terminate the request after you have send the response.
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* * If the ajax request is not for your method you simply have nothing to
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* * return.
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*
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*
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* Usage
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* `````
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* // config.php
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* $GLOBALS['TL_HOOKS']['rateitAjax'][] = array('MyClass', 'myMethod');
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*
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* // MyClass.php
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* class MyClass extends System
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* {
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* public function myMethod()
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* {
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* if ($this->Input->get('acid') == 'myrequest')
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* {
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* $arrReturn = array('foo', 'bar', 'foobar');
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*
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* header('Content-Type: application/json');
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* echo json_encode($arrReturn);
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* exit;
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* }
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* }
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* }
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*/
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class RateitAjax extends Controller
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{
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/**
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* Call the parent constructor.
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*
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* !!! DON'T REMOVE THIS !!!
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*
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* If you remove this you get the following error message:
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* Fatal error: Call to protected System::__construct() from invalid
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* context
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*
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* @param void
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* @return void
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*/
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public function __construct()
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{
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parent::__construct();
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}
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/**
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* Get the ajax request and call all hooks
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*
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* @param void
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* @return void
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*/
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public function run()
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{
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// check if a hook is registered
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if (is_array($GLOBALS['TL_HOOKS']['rateitAjax']) && count($GLOBALS['TL_HOOKS']['rateitAjax']) > 0)
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{
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// execute every registered callback
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foreach ($GLOBALS['TL_HOOKS']['rateitAjax'] as $callback)
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{
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$this->import($callback[0]);
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$this->{$callback[0]}->{$callback[1]}();
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}
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}
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// if there is no other output, we generate a 412 error response
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header('HTTP/1.1 412 Precondition Failed');
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die('Rateit Ajax: Invalid AJAX call.');
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}
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}
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// create a rateit-ajax instance and run it
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$objRateitAjax = new RateitAjax();
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$objRateitAjax->run();
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?>
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