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<?php
/**
*
*/
abstract class Loco_mvc_AjaxController extends Loco_mvc_Controller {
/**
* Request arguments injected from Router
* @var ArrayObject
*/
private $input;
/**
* Data to respond with as JSON
* @var ArrayObject
*/
private $output;
/**
* Pre-init call invoked by router
* @param mixed[]
* @return void
*/
final public function _init( array $args ){
$this->auth();
$this->output = new ArrayObject;
$this->input = new ArrayObject( $args );
// avoid fatal error if json extension is missing
loco_check_extension('json');
}
/**
* Get posted data and validate nonce in the process
* @return Loco_mvc_PostParams
*/
protected function validate(){
$route = $this->input['route'];
if( ! $this->checkNonce($route) ){
throw new Loco_error_Exception( sprintf('Ajax %s action requires postdata with nonce',$route) );
}
return Loco_mvc_PostParams::get();
}
/**
* {@inheritdoc}
*/
public function get( $prop ){
return isset($this->input[$prop]) ? $this->input[$prop] : null;
}
/**
* {@inheritdoc}
*/
public function set( $prop, $value ){
$this->output[$prop] = $value;
return $this;
}
/**
* @return string JSON
*/
public function render(){
$data = [
'data' => $this->output->getArrayCopy(),
];
// non-fatal notices deliberately not in "error" key
$array = Loco_error_AdminNotices::destroy();
if( $array ){
$data['notices'] = $array;
}
return json_encode( $data );
}
/**
* Pretty json encode if PHP version allows
*
protected function json_encode( $data ){
$opts = 0;
if( defined('JSON_PRETTY_PRINT') ){
$opts |= JSON_PRETTY_PRINT;
}
if( defined('JSON_UNESCAPED_SLASHES') ){
$opts |= JSON_UNESCAPED_SLASHES;
}
return json_encode( $data, $opts );
}*/
}
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