Validation that courses in family share course type

dashboard/app/models/concerns/curriculum/course_types.rb

@@ -15,6 +15,28 @@ module Curriculum::CourseTypes
     validates :participant_audience, acceptance: {accept: SharedCourseConstants::PARTICIPANT_AUDIENCE.to_h.values, message: 'must be facilitator, teacher, or student'}
 
     validate :cannot_have_same_audiences
+    validate :must_have_same_course_type_as_family
+  end
+
+  # All courses in the same family name must have the save instruction_type, instructor_audience, and participant audience
+  def must_have_same_course_type_as_family
+    all_family_courses = nil
+    family_name = self.family_name
+
+    if (is_a?(Script) && unit_group) || is_a?(UnitGroup)
+      family_name = unit_group.family_name if is_a?(Script) && unit_group
+      return if family_name.nil_or_empty?
+      all_family_courses = UnitGroup.all.select {|c| c.family_name == family_name}
+    elsif is_a?(Script)
+      return if family_name.nil_or_empty?
+      all_family_courses = Script.get_family_from_cache(family_name)
+    end
+
+    if all_family_courses
+      errors.add(:instructor_audience, 'Instructor Audience must be the same for all courses in a family.') if all_family_courses.map(&:instructor_audience).uniq.length > 1
+      errors.add(:participant_audience, 'Participant Audience must be the same for all courses in a family.') if all_family_courses.map(&:participant_audience).uniq.length > 1
+      errors.add(:instruction_type, 'Instruction Type must be the same for all courses in a family.') if all_family_courses.map(&:instruction_type).uniq.length > 1
+    end
   end
 
   # Instructor and Participant Audience can not be equal unless they are nil

dashboard/test/controllers/scripts_controller_test.rb

@@ -901,7 +901,7 @@ class ScriptsControllerTest < ActionController::TestCase
       is_course: 'on',
       peer_reviews_to_complete: 1,
       curriculum_path: 'fake_curriculum_path',
-      family_name: 'coursea',
+      family_name: 'fake-family-z',
       version_year: '2020',
       pilot_experiment: 'fake-pilot-experiment',
       editor_experiment: 'fake-editor-experiment',

dashboard/test/integration/db_query_test.rb

@@ -109,7 +109,7 @@ def setup
     student.assign_script(script)
     sign_in student
 
-    assert_cached_queries(6) do
+    assert_cached_queries(7) do
       get "/s/#{script.name}"
       assert_response :success
     end

dashboard/test/lib/services/script_seed_test.rb

@@ -83,12 +83,13 @@ class ScriptSeedTest < ActiveSupport::TestCase
       #   1 query to get all the programming environments
       #   1 query to get all the standards frameworks
       #   1 query to check for a CourseOffering. (Would be a few more if is_course was true)
+      #   1 query to check if units in family have the same course type settings
       # LevelsScriptLevels has queries which scale linearly with the number of rows.
       # As far as I know, to get rid of those queries per row, we'd need to load all Levels into memory. I think
       # this is slower for most individual Scripts, but there could be a savings when seeding multiple Scripts.
       # For now, leaving this as a potential future optimization, since it seems to be reasonably fast as is.
       # The game queries can probably be avoided with a little work, though they only apply for Blockly levels.
-      assert_queries(86) do
+      assert_queries(87) do
         ScriptSeed.seed_from_json(json)
       end