Filter to detect if Response::json was sent - laravel

Question

I have a filter. I want this filter to act only if the page is displaying HTML and NOT if it's json or any other format
App::after(function($request, $response)
{
if( $request->getMethod() == 'GET' && $request->getRequestFormat() == 'html' ) {
// do something!
}
});
In my Controller functions I return json data:
return Response::json($data);
However, $request->getRequestFormat() is still equal to 'html' and it shouldn't be.
I know that I can set the format to be 'json' like this:
Request::setRequestFormat('json');
return Response::json($data);
But it seems redundant. If I'm returning a Response::json it should know that it's json and not HTML. How can I detect that it's a Response::json?

Answer 1

The requestFormat is something that isn't set automatically - you either provide it programattically via setRequestFormat or by including a POST/GET parameter _format.
If you want to check if a request is JSON you can do $request->isJson(), but it looks more to me like you're trying to check if the response is JSON? In which case you can do $response instanceof Illuminate\Http\JsonResponse or $response->headers->get('Content-Type') == 'application/json'

Answer 2

This is not a json at all, it's HTML which contains some string inside a div. Remove the div and just pass the json using:
return Response::json($data);
Then in the client side, using jQuery parse the json data and create a div and append the data inside div, for example, in your success callback try something like this:
success(response) {
// Parse the json if not parsed by jQuery
var obj = $.parseJSON(response);
if(obj.success) {
$('<div/>', {id:"query-log"}).append(obj.data).appendTo('body');
}
}
This may not accurate with your json data but hope you got the idea, in short, just pass the json data to the client side and manipulate it in the browser using jQuery.
Update: The better approach would be to provide the dataType when making the request using something like tgis:
$.ajax({
dataType: "json",
url: url,
data: data,
success: function( data ) {
}
});
Also you may use this:
$.getJSON( "url", function( data ) {
// ...
});
So a request header will be sent to the server and you may check if the request is expecting a json response using this:
if($request->wantsJson()) {
//
}
This is the method in the request class:
/**
* Determine if the current request is asking for JSON in return.
*
* #return bool
*/
public function wantsJson()
{
$acceptable = $this->getAcceptableContentTypes();
return isset($acceptable[0]) && $acceptable[0] == 'application/json';
}

Answer 3

App::after(function($request, $response)
{
if( $request->getMethod() == 'GET' && $request->getRequestFormat() == 'html' ) {
// Test if response is JSON (PHP 5.3+ needed for this)
json_decode($response);
if ( json_last_error() != JSON_ERROR_NONE ) {
// Do something
}
}
});