Question

I am learning Rails, and am writing a simple app that will handle notes. Notes have a value “score” that is an integer. I want the user to press a button named “vote up” and one “vote down”, and voting up will make score=score+1.

The notes_controller.rb has a method ‘upvote’ that looks like

def upvote
  @note = Note.find params[:id]

  @note.score = @note.score +1
end

But I can not figure out how to route so that sending a POST (or UPDATE?) to /notes/:id/upvote makes the note’s score change?

Answer 1

in your routes file:

resources :notes do
  member do
    put :upvote
  end
end

This will create the named route upvote_note_path which will point /notes/:id/upvote, and will run your NotesController upvote action.