/**
* Responds to the request with JSON.
*
* @param array $var The array that should be JSON-encoded and returned to the browser.
* @param array $options An array of options.
*
* The $options array can contain the following values:
*
* - `'expires'` - Sets the Expires header value (in seconds). Defaults to `false`, which prevents
* the response from getting cached. If set to `null`, no Expires header will be set.
*
* @return null
*/
public function returnJson($var = array(), $options = array())
{
// Set the 'application/json' Content-Type header
JsonHelper::setJsonContentTypeHeader();
$options = array_merge(array('expires' => false), $options);
// Set the Expires header
if ($options['expires'] === false) {
HeaderHelper::setNoCache();
} else {
if ($options['expires']) {
HeaderHelper::setExpires($options['expires']);
}
}
// Output it into a buffer, in case TasksService wants to close the connection prematurely
ob_start();
echo JsonHelper::encode($var);
craft()->end();
}
