The goal of the project is to build a simple application around Photo Ops.

• Paperclip (file attachment library for ActiveRecord)
• Testing
  • factory-bot-rails
  • shoulda-matchers

Our API will expose the following RESTful endpoints.

I decided to use request specs instead of the controller specs. RSpec Release Note

I start generating the themes and stands models but we are not going to use for the endpoints. All the action is in the Photographer and Photo models.

In the spec/model, I have the model_spec where we test the relationship between the models and the validations of the fields.

I use factories to test the models. For the Photo model I decided upload an image from the fixtures instate of use a fake avatar image.

All the endpoints are tested in the requests folder and have comments and annotations.

In the controllers/concerns I have two modules to manage all the response of the API, json_response and exception_handler.

Paperclip

In my opinion, the best gem for file attachment. Good test documentation for validate all the fields, for the Test::Unit too. Module: Paperclip::Shoulda::Matchers

Currently I use the File Store in the public folder but the AWS S3 integration is so easy.

Paperclip support Fingerprint your files. One of the requirements for Scaling. Guides Asset Pipeline

The challenge here is test all the functionality, send a hash of photos with the parameters, and itearate later in the controller to create the photo related with the photographer, very similar like here StackOverflow code But I was not so happy, so my idea for do that is use something like dropzonejs and generate diferents Ajax request for the Post. Issue here, is going to generate multiple codes.
Blog explain uploads multipe Files with DropzoneJS and Paperclip