How do you force a JSON response on every response

问题:

I'm trying to build a REST api using Laravel Framework, I want a way to force the API to always responed with JSON not by doing this manulaly like:

return Response::json($data);

In other words I want every response to be JSON. Is there a good way to do that?

Update: The response must be JSON even on exceptions like not found exception.

回答1:

To return JSON in the controller just return $data;

For a JSON response on errors, go to app\Exceptions\Handler.php file and look at the render method.

You should be able to re-write it to look something like this:

public function render($request, Exception $e)
{
    // turn $e into an array.
    // this is sending status code of 500
    // get headers from $request.
    return response()->json($e, 500);
}

However you will have to decide what to do with $e, because it needs to be an array. You can also set the status code and header array.

But then on any error, it will return a JSON response.

Edit: It's also good to note that you can change the report method to handle how laravel logs the error as well. More info here.

回答2:

I know this has been answered but these are not good solutions because they change the status code in unpredictable ways. the best solution is to either add the appropriate headers so that Laravel returns JSON (I think its Accept: application/json), or follow this great tutorial to just always tell Laravel to return JSON: https://hackernoon.com/always-return-json-with-laravel-api-870c46c5efb2

You could probably also do this through middleware as well if you wanted to be more selective or accommodate a more complex solution.