Use contestant IDs instead of tokens for QR codes

#6

app/controllers/contestants_controller.rb

@@ -122,12 +122,16 @@ class ContestantsController < ApplicationController
   def generate_qrcodes
     authorize @contest
 
+    generate_contestants_qrcodes(@contest)
+
     @contestants = @contest.contestants.sort_by { |contestant| contestant.name }
   end
 
   def generate_qrcodes_pdf
     authorize @contest
 
+    generate_contestants_qrcodes(@contest)
+
     @contestants = @contest.contestants.sort_by { |contestant| contestant.name }
     @nonav = true
 
@@ -139,7 +143,7 @@ class ContestantsController < ApplicationController
   def get_public_completion
     skip_authorization
 
-    @contestant = Contestant.find_by_token_for(:token, params[:token])
+    @contestant = Contestant.find(params[:contestant_id])
     if !@contestant
       not_found and return
     end
@@ -156,7 +160,7 @@ class ContestantsController < ApplicationController
   def post_public_completion
     skip_authorization
 
-    @contestant = Contestant.find_by_token_for(:token, params[:token])
+    @contestant = Contestant.find(params[:contestant_id])
     if !@contestant
       not_found and return
     end
@@ -186,7 +190,7 @@ class ContestantsController < ApplicationController
   def public_completion_updated
     skip_authorization
 
-    @contestant = Contestant.find_by_token_for(:token, params[:token])
+    @contestant = Contestant.find(params[:contestant_id])
     if !@contestant
       not_found and return
     end
@@ -235,4 +239,11 @@ class ContestantsController < ApplicationController
   def completion_params
     params.expect(completion: [ :display_time_from_start, :completed, :missing_pieces, :remaining_pieces, :puzzle_id, :code ])
   end
+
+  def generate_contestants_qrcodes(contest)
+    contest.contestants.where(qrcode: nil).each do |contestant|
+      contestant.generate_qrcode
+      contestant.save
+    end
+  end
 end