Step1 : add new column to Assign_tos and make sure that the data is saved on form submit

app/controllers/instructeurs/procedures_controller.rb

@@ -232,6 +232,7 @@ module Instructeurs
 
     def update_email_notifications
       assign_to.update!(assign_to_params)
+      assign_to.update!(daily_email_notifications_enabled: params[:assign_to][:email_notifications_enabled])
       flash.notice = 'Vos notifications sont enregistrées.'
       redirect_to instructeur_procedure_path(procedure)
     end

app/models/assign_to.rb

@@ -3,9 +3,14 @@ class AssignTo < ApplicationRecord
   belongs_to :groupe_instructeur
   has_one :procedure_presentation, dependent: :destroy
   has_one :procedure, through: :groupe_instructeur
+  before_save :save_to_new_daily_email_column
 
   scope :with_email_notifications, -> { where(email_notifications_enabled: true) }
 
+  def save_to_new_daily_email_column
+    self.daily_email_notifications_enabled = email_notifications_enabled
+  end
+
   def procedure_presentation_or_default_and_errors
     errors = reset_procedure_presentation_if_invalid
     [procedure_presentation || build_procedure_presentation, errors]

db/migrate/20200218144724_add_daily_email_notifications_enabled_to_assign_tos.rb

@@ -0,0 +1,5 @@
+class AddDailyEmailNotificationsEnabledToAssignTos < ActiveRecord::Migration[5.2]
+  def change
+    add_column :assign_tos, :daily_email_notifications_enabled, :boolean, default: false, null: false
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2020_02_11_170134) do
+ActiveRecord::Schema.define(version: 2020_02_18_144724) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -103,6 +103,7 @@ ActiveRecord::Schema.define(version: 2020_02_11_170134) do
     t.boolean "email_notifications_enabled", default: false, null: false
     t.bigint "groupe_instructeur_id"
     t.boolean "weekly_email_notifications_enabled", default: true, null: false
+    t.boolean "daily_email_notifications_enabled", default: false, null: false
     t.index ["groupe_instructeur_id", "instructeur_id"], name: "unique_couple_groupe_instructeur_instructeur", unique: true
     t.index ["groupe_instructeur_id"], name: "index_assign_tos_on_groupe_instructeur_id"
     t.index ["instructeur_id", "procedure_id"], name: "index_assign_tos_on_instructeur_id_and_procedure_id", unique: true

lib/tasks/deployment/20200220142710_backfill_daily_email_notification_columns.rake

@@ -0,0 +1,16 @@
+namespace :after_party do
+  desc 'Deployment task: backfill_daily_email_notification_columns'
+  task backfill_daily_email_notification_columns: :environment do
+    puts "Running deploy task 'backfill_daily_email_notification_columns'"
+    AssignTo.find_each do |assign_to|
+      columns_to_update = {}
+      if assign_to.email_notifications_enabled != assign_to.daily_email_notifications_enabled
+        columns_to_update[:daily_email_notifications_enabled] = assign_to.email_notifications_enabled
+      end
+      assign_to.update_columns(columns_to_update) unless columns_to_update.empty?
+    end
+    # Update task as completed.  If you remove the line below, the task will
+    # run with every deploy (or every time you call after_party:run).
+    AfterParty::TaskRecord.create version: '20200220142710'
+  end # task :backfill_daily_email_notification_columns
+end # namespace :after_party