Re: [ruby-roda] Use JsonApi content-type ('application/vnd.api+json') for ALL responses

[Jeremy Evans]

On Fri, Mar 12, 2021 at 10:40 AM 'fran.em...@googlemail.com' via Roda <ruby...@googlegroups.com> wrote:

Hi Jeremy,

I hope this is an easy question but I have read all the docs for all the plugins we are using and I can't see what I've missed.

We have roda based app which is an API almost exclusively receiving and responding in the JsonApi format which uses the special content type 'application/vnd.api+json' . 

We use the following plugins setup in our router class as follows:

```ruby

class Api < Roda

  JSON_CLASSES = [Array, Hash, Roar::Decorator, Representable::Decorator].freeze

  DEFAULT_CONTENT_TYPE = 'application/vnd.api+json'

  plugin :halt

  plugin :multi_route

  plugin :json, classes: JSON_CLASSES, content_type: DEFAULT_CONTENT_TYPE

  plugin :json_parser

  plugin :all_verbs

  plugin :request_headers

  plugin :default_headers, 'Content-Type' => DEFAULT_CONTENT_TYPE

  plugin :rodauth, json: :only do

    enable :jwt

    json_response_error_status 401

    json_response_content_type DEFAULT_CONTENT_TYPE

  end

end
```

Unfortunately for any requests which make use of the json plugin (i.e. parse the routes return value `to_json`), the content-type header is still set to `application/json`. 

Any ideas, I'm wondering if either I've missed a configuration option somewhere or if there is a conflict in setting the content-type heading between the various plugins we are using.

Any help or advice you can give on this would be most appreciated.

Fran,

Can you please put together a minimal self contained reproducible example?  I tried and couldn't reproduce:

class Api < Roda
  DEFAULT_CONTENT_TYPE = 'application/vnd.api+json'

  plugin :json, content_type: DEFAULT_CONTENT_TYPE
  plugin :default_headers, 'Content-Type' => DEFAULT_CONTENT_TYPE

  route do |r|
    r.get "json" do
      [1]
    end

    "true"
  end
end

p Api.call({'REQUEST_METHOD'=>"GET", "PATH_INFO"=>"/json"})
p Api.call({})

Output:

[200, {"Content-Type"=>"application/vnd.api+json", "Content-Length"=>"3"}, ["[1]"]]
[200, {"Content-Type"=>"application/vnd.api+json", "Content-Length"=>"4"}, ["true"]]

This doesn't test everything you are using in your example (no Rodauth), but I'm not sure if your issue specific to Rodauth or not.

Thanks,

Jeremy