Rails link that updates integer in DB

I have a column in my table that is an integer. I'm trying to make a link in my application that puts a specific integer in that column.

i.e. :

User clicks link labeled 0 => record in DB sets record to 0

User clicks link labeled 1 => record in DB sets record to 1

ETC. . .

In the VIEW:

<%= link_to "0", 
     {:controller => "application", 
      :action => 'rate_app'}, 
      :class => "rate_btn", 
      :method=> :put 
%>

In the CONTROLLER:

def rate_app(current_user, rating)
  current_user.nps_rating = rating
  if current_user.save
    redirect_to mypage_path
  end
end

Does anyone see开发者_C百科 a conflict/mess-up in the code? I get an error.

---

If you are adding information to your db, it should be done via a POST. Links are a GET. With that being said, I would suggest looking at button_to to solve this one.

http://apidock.com/rails/ActionView/Helpers/UrlHelper/button_to