Ruby on Rails: Distinguishing between an upvote and a downvote

I have two buttons, one for upvoting and one for downvoting:

<%= button_to "+1", { :action => "create", :id => @video.id }, :remote => true %>

<%= button_to "-1", { :action => "create", :id => @video.id }, :remote => true %>

They both go to the create method, but I want one to set a video_votes table column named 'val开发者_如何学运维ue' equal to 1 while the other one sets it equal to -1. Where should I do this?

Also, since I'm using AJAX with a create.js.erb file, do I need to do something like respond_to format do format.js in the create controller method?

You could pass an aditional paramater signifying what type of vote it is.

<%= button_to "+1", { :action => "create", :id => @video.id, :type => "up" }, :remote => true %>


<%= button_to "-1", { :action => "create", :id => @video.id, :type => "down" }, :remote => true %>

And in your def create:

def create

  if params[:type] == "up"
    #do this
  else
    # do that
  end

end

Also you will have to render the create.erb.js file.