Rename remaining occurences of sort attribute of voucher to role

app/models/redemption.rb

@@ -11,7 +11,7 @@ class Redemption < ApplicationRecord
                            source_type: "Talk"
 
   delegate :lecture, to: :voucher
-  delegate :sort, to: :voucher
+  delegate :role, to: :voucher
   delegate :tutor?, to: :voucher
   delegate :editor?, to: :voucher
   delegate :teacher?, to: :voucher

app/models/voucher.rb

@@ -19,9 +19,9 @@ class Voucher < ApplicationRecord
                    where("expires_at > ? AND invalidated_at IS NULL",
                          Time.zone.now)
                  }
-  scope :for_tutors, -> { where(sort: :tutor) }
-  scope :for_editors, -> { where(sort: :editor) }
-  scope :for_speakers, -> { where(sort: :speaker) }
+  scope :for_tutors, -> { where(role: :tutor) }
+  scope :for_editors, -> { where(role: :editor) }
+  scope :for_speakers, -> { where(role: :speaker) }
 
   self.implicit_order_column = "created_at"
 

app/services/voucher_processor.rb

@@ -18,7 +18,7 @@ def call
   private
 
     def process_voucher
-      case @voucher.sort
+      case @voucher.role
       when "tutor"
         process_tutor_voucher
       when "editor"

app/views/vouchers/verify.js.erb

@@ -1,5 +1,5 @@
 $("#redeem-voucher").empty()
-  .append("<%= j render partial: 'vouchers/redeem_' + @voucher.sort + '_voucher', locals: { voucher: @voucher } %>");
+  .append("<%= j render partial: 'vouchers/redeem_' + @voucher.role + '_voucher', locals: { voucher: @voucher } %>");
 
 // activate selectize
 // @reviewer: This is used several times in our code base (in the coffeescript