Updated to rails 6. Passing tests

app/controllers/attempts_controller.rb

@@ -15,13 +15,13 @@ class AttemptsController < ApplicationController
     )
 
     unless (['start', 'resume', 'restart', 'yes', 'go'].index(twilio_params[:Body].downcase).nil?)
-      recipient.update_attributes(opted_out: false)
+      recipient.update(opted_out: false)
       render plain: 'Thank you, you will now begin receiving messages again.'
       return
     end
 
     unless (['stop', 'cancel', 'quit', 'no'].index(twilio_params[:Body].downcase).nil?)
-      recipient.update_attributes(opted_out: true)
+      recipient.update(opted_out: true)
       render plain: 'Thank you, you have been opted out of these messages and will no longer receive them.'
       return
     end

app/controllers/recipient_lists_controller.rb

@@ -35,7 +35,7 @@ class RecipientListsController < ApplicationController
 
   # PUT schools/1/recipient_lists/1
   def update
-    if @recipient_list.update_attributes(recipient_list_params)
+    if @recipient_list.update(recipient_list_params)
       redirect_to([@recipient_list.school, @recipient_list], notice: 'Recipient list was successfully updated.')
     else
       render action: 'edit'

app/controllers/schedules_controller.rb

@@ -31,7 +31,7 @@ class SchedulesController < ApplicationController
 
   # PUT schools/1/schedules/1
   def update
-    if @schedule.update_attributes(schedule_params)
+    if @schedule.update(schedule_params)
       redirect_to([@schedule.school, @schedule], notice: 'Schedule was successfully updated.')
     else
       render action: 'edit'