Custom DS for Symphony CMS – add Facebook access token to param pool

datasourceaccess_token.php

<?php

	require_once(TOOLKIT . '/class.datasource.php');

	Class datasourceaccess_token extends Datasource{

	    function about(){
	        return array('name' => 'access token');   
	    }
	    
	    function __construct(&$parent, $env=NULL, $process_params=true){
	        parent::__construct($parent, $env, $process_params);
	        $this->_dependencies = array();
	    }

		public function allowEditorToParse(){
			return false;
		}

		public function grab(&$param_pool){
			$theAccessToken = file_get_contents('https://graph.facebook.com/oauth/access_token?grant_type=client_credentials&client_id=xxxxxxxxxxxxx&client_secret=xxxxxxxxxxxxx');
			if($theAccessToken){
				$param_pool['accesstoken'] = $theAccessToken;
			}else{ // it seemed sensible to fallback to something if file_get_contents() didn't work;
				$param_pool['accesstoken'] = 'access_token=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx';
			}
		}

	}