Symfony以JSON格式保留API自定义404错误页面

Question

I don't get how to customize error pages, in a JSON format for a REST API, written with Symfony. I made this small demo :

As you can see, the project is set up with the Twig Bundle and I have customized the 404 pages in JSON format..

I Have tested the API with the dev server.

• In dev mode, I get the JSON message with the dedicated URL (http://localhost:8000/_error/404.json)

• In prod mode, When I call the API with a wrong URI :

  curl -H "Content-Type:application/json" -H "Accept: application/json" -i http://localhost:8000/api/v1/vols

The client received HTML 404 page and not JSON format (the header send with the curl command is supposed to set symfony to a response in JSON format).

Answer 1

You can do it by overriding the twig show error action by forcing it to render a JSON instead of HTML. I recommend you to see here: https://symfony.com/doc/4.2/reference/configuration/twig.html#exception-controller

Don't forget than Symfony can render .json.twig file