public function actionGetEditorHtml()
{
/*
* Now *this* is what you call a hack!
*
* Okay, so what's going on here is the controller action that returns editor HTML for elements is being
* intercepted so extra data can be passed. The `getEditorHtml` action expects an AJAX request, and it returns
* JSON data. This means this action calls the `returnJson` helper function which actually echo's JSON and then
* immediately kills any more processing by calling `exit`.
*
* In the Javascript, the ElementEditor class is modified to request this controller action instead of the
* elements one. However best practice would not allow copying and pasting the entire elements controller, which
* is what would've needed to be done. You generally want to reuse as much code as possible, *especially* if
* that code is third-party and subject to change.
*
* So that leaves finding a way to call the controller action manually, as well as intercepting the data before
* the application is exited.
*
* Fortunately Brad Bell posted a way to manually call an action on the exchange, which you can see here:
* http://craftcms.stackexchange.com/a/8814/3811
*
* Intercepting the outputted JSON was a little more tricky. Thankfully PHP supplies a way of registering a
* callback when the application exits, seen here:
* http://php.net/manual/en/function.register-shutdown-function.php
* At the point this callback is called, the JSON is already generated and echoed. Using the `ob` functions,
* this data can be retrieved, where it can be decoded back into PHP, modified, then encoded and re-echoed.
*
* Hey, at least I didn't have to copy and paste a huge chunk of code!
*/
register_shutdown_function(function () {
$element = false;
$elementId = craft()->request->getPost('elementId');
$elementType = craft()->request->getPost('elementType');
if ($elementId !== null) {
if ($elementType === null) {
$elementType = craft()->elements->getElementTypeById($elementId);
}
$element = craft()->elements->getElementById($elementId, $elementType);
}
if ($element) {
$json = JsonHelper::decode(ob_get_clean());
switch ($elementType) {
case ElementType::Asset:
$json['elementType'] = 'asset';
$json['assetSourceId'] = $element->sourceId;
break;
case ElementType::Category:
$json['elementType'] = 'category';
$json['categoryGroupId'] = $element->groupId;
break;
case ElementType::Entry:
$json['elementType'] = 'entry';
$json['sectionId'] = $element->sectionId;
$json['entryTypeId'] = $element->typeId;
break;
case ElementType::Tag:
$json['elementType'] = 'tag';
$json['tagGroupId'] = $element->groupId;
break;
}
echo JsonHelper::encode($json);
}
});
craft()->runController('elements/getEditorHtml');
}
