Add StudyGroup to RemoteEvaluationMapping

db/migrate/20210426113125_add_study_group_to_remote_evaluation_mapping.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class AddStudyGroupToRemoteEvaluationMapping < ActiveRecord::Migration[5.2]
+  def change
+    add_reference :remote_evaluation_mappings, :study_group, index: true, null: true, foreign_key: true
+  end
+end