Use contestant IDs instead of tokens for QR codes

#6

app/models/contestant.rb

@@ -28,13 +28,10 @@ class Contestant < ApplicationRecord
   has_and_belongs_to_many :categories
 
   before_validation :initialize_time_seconds_if_empty
-  before_save :generate_qrcode, if: -> { !qrcode.present? }
 
   validates :name, presence: true
   validates :time_seconds, presence: true
 
-  generates_token_for :token
-
   def form_name
     if email.present?
       "#{name} - #{email}"
@@ -43,21 +40,9 @@ class Contestant < ApplicationRecord
     end
   end
 
-  def regenerate_qrcode
-    generate_qrcode
-  end
-
-  private
-
-  def initialize_time_seconds_if_empty
-    if !self.time_seconds
-      self.time_seconds = 0
-    end
-  end
-
   def generate_qrcode
     host = Rails.application.config.action_controller.default_url_options[:host]
-    qrcode = RQRCode::QRCode.new("https://#{host}/public/p/#{self.generate_token_for(:token)}")
+    qrcode = RQRCode::QRCode.new("https://#{host}/public/p/#{self.id}")
     self.qrcode = qrcode.as_svg(
       color: "000",
       shape_rendering: "crispEdges",
@@ -67,4 +52,12 @@ class Contestant < ApplicationRecord
       viewbox: true
     )
   end
+
+  private
+
+  def initialize_time_seconds_if_empty
+    if !self.time_seconds
+      self.time_seconds = 0
+    end
+  end
 end