add account_id to submissions

db/migrate/20240203113454_add_account_id_to_submissions.rb

@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+class AddAccountIdToSubmissions < ActiveRecord::Migration[7.1]
+  class MigrationSubmission < ApplicationRecord
+    self.table_name = 'submissions'
+  end
+
+  class MigrationTemplate < ApplicationRecord
+    self.table_name = 'templates'
+  end
+
+  class MigrationAccount < ApplicationRecord
+    self.table_name = 'accounts'
+  end
+
+  def change
+    add_reference :submissions, :account, index: true, null: true
+
+    MigrationAccount.all.each do |account|
+      MigrationSubmission.where(template_id: MigrationTemplate.where(account_id: account.id).select(:id))
+                         .update_all(account_id: account.id)
+    end
+
+    change_column_null :submissions, :account_id, false
+  end
+end