How to get Rails to respond with json based on headers

Question

I'm building an API with Rails 4 and in my controller I'm using respond_to to differentiate between html and json request which all works fine. While testing my API in Postman, I've added the following header: Content-Type: application/json but in my request I still need to add .json at the end of it like so: https://myapi.com/api/users.json otherwise Rails will respond with html even though the aforementioned header is present.

My question is this: is there a way that Rails can recognise the Content-Type: application/json header and respond with json without me using the .json part in the url like so: https://mypai.com/api/users?

Answer 1

You also need to set the Accept header to Accept: application/json

If you're curious as to why, and the difference between the two headers, the answers to this post explain it best: https://webmasters.stackexchange.com/questions/31212/difference-between-the-accept-and-content-type-http-headers