How to set content type for JSON API in Rails 5 API only app

Question

Follow the specification to use the JSON api, the content type must be set to

application/vnd.api+json

; however, setting the

ContentType

in every action in the controller seems tedious (see code below).

  def foo

    response.headers['Content-Type'] = 'application/vnd.api+json'

    # ...

  end

Is there a better way to achive the same result? Since this is an API only app is this possible to set content type at application level?

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Answer 1

You can use the before_action directive:

class ApplicationController < ActionController::API
  before_action :set_headers

  def set_headers
    response.headers['Content-Type'] = 'application/vnd.api+json'
  end

end

How to set content type for JSON API in Rails 5 API only app

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