acts_as_votable not working when I upvote/downvote - ruby-on-rails

Question

I am trying to allow treatment to be votable with upvotes or downvotes but the methods provided by act_as_votable don't seem to be working as intended. When I try to display the sum of upvotes-downvotes it returns 0 each time, implying votes aren't registering like they should.
My treatments_controller.rb
def upvote
#treatment = Treatment.find(params[:id])
#treatment.upvote_by #current_user
render 'show'
end
def downvote
#treatment = Treatment.find(params[:id])
#treatment.downvote_by #current_user
redirect_to treatments_path
end
My treatment.rb
class Treatment < ActiveRecord::Base
acts_as_votable
has_many :review
has_one :service
def score
self.get_upvotes.size - self.get_downvotes.size
end
end
My routes.rb
resources :treatments do
member do
put "like", to: "treatments#upvote"
put "dislike", to: "treatments#downvote"
end
end
And my treatments/show.html.erb
<div class="container">
<div class="row">
<div class="col-sx-12 col-sm-12 col-md-8">
<h3><%= #treatment.name %></h3></br></br>
<h3>
<%= link_to "upvote", like_treatment_path(#treatment), method: :put %></br>
<%= link_to "downvote", dislike_treatment_path(#treatment), method: :put %></br>
<%= #treatment.score %></br> </h3>
The server log says the following
Started PUT "/treatments/1/like" for ::1 at 2015-12-09 16:22:14 +0000
Processing by TreatmentsController#upvote as HTML
Parameters: {"authenticity_token"=>"hQnqV+OZ6m/9kFnr5YH6j563DIjyKfA4K/8fH6kpFbXbJRbsHCcNYn1AX4usZmUNXPlnFpxHMwTM8ilFxcbdhQ==", "id"=>"1"}
Geokit is using the domain: localhost
Treatment Load (0.5ms) SELECT "treatments".* FROM "treatments" WHERE "treatments"."id" = ? LIMIT 1 [["id", 1]]
(0.5ms) SELECT COUNT(*) FROM "votes" WHERE "votes"."votable_id" = ? AND "votes"."votable_type" = ? AND "votes"."vote_flag" = ? AND "votes"."vote_scope" IS NULL [["votable_id", 1], ["votable_type", "Treatment"], ["vote_flag", "t"]]
(0.0ms) SELECT COUNT(*) FROM "votes" WHERE "votes"."votable_id" = ? AND "votes"."votable_type" = ? AND "votes"."vote_flag" = ? AND "votes"."vote_scope" IS NULL [["votable_id", 1], ["votable_type", "Treatment"], ["vote_flag", "f"]]
Rendered treatments/show.html.erb within layouts/application (6.5ms)
User Load (0.0ms) SELECT "users".* FROM "users" WHERE "users"."id" = ? LIMIT 1 [["id", 4]]
Completed 200 OK in 569ms (Views: 563.3ms | ActiveRecord: 1.0ms)

Answer 1

Thanks to the help of Kristjan I realised there was no insertion happening. I defined current_user within the upvote and downvote methods. The revised working versions look like so.
def upvote
current_user = User.find_by_id(session[:user_id])
#treatment = Treatment.find(params[:id])
#treatment.upvote_by current_user
render 'show'
end
def downvote
current_user = User.find_by_id(session[:user_id])
#treatment = Treatment.find(params[:id])
#treatment.downvote_by current_user
render 'show'
end