gradebook: show sis button when individual section is selected

Previoiusly, when viewing a section in the Gradebook as a teacher, if
the "Read SIS Data" permission wasn't enabled, there wasn't a
"Sync Grades" button. Now, the button is present in this scenario.

closes CNVS-39257

Test Plan:
1. Disable the "Read SIS Data" permission for teachers.
2. Create a course with a SIS ID.
3. Create two sections with SIS IDs.
4. Add a teacher to that course
5. Create an assignment.
6. Go to the assignments page and click the "sync to sis icon" next
   to the assignment name.
7. As a teacher, go to the gradebook and notice the Sync Grades button.
8. Select an individual section, and notice there is still a Sync Grades
   button.

Change-Id: I308e5b4eb23b18dc94cf8e5b6ea3f579e2ca9594
Reviewed-on: https://gerrit.instructure.com/126694
Tested-by: Jenkins
Reviewed-by: Jeremy Neander <jneander@instructure.com>
Reviewed-by: Derek Bender <djbender@instructure.com>
QA-Review: Indira Pai <ipai@instructure.com>
Product-Review: Matt Goodwin <mattg@instructure.com>

app/controllers/gradebooks_controller.rb

@@ -410,7 +410,7 @@ class GradebooksController < ApplicationController
         gradebook_column_order_settings_url: save_gradebook_column_order_course_gradebook_url,
         post_grades_ltis: post_grades_ltis,
         post_grades_feature: post_grades_feature?,
-        sections: sections_json(@context.active_course_sections, @current_user, session),
+        sections: sections_json(@context.active_course_sections, @current_user, session, [], allow_sis_ids: true),
         settings_update_url: api_v1_course_gradebook_settings_update_url(@context),
         settings: gradebook_settings.fetch(@context.id, {}),
         login_handle_name: @context.root_account.settings[:login_handle_name],

lib/api/v1/section.rb

@@ -20,10 +20,10 @@ module Api::V1::Section
   include Api::V1::Json
   include Api::V1::PostGradesStatus
 
-  def section_json(section, user, session, includes)
+  def section_json(section, user, session, includes, options = {})
     res = section.as_json(:include_root => false,
                           :only => %w(id name course_id nonxlist_course_id start_at end_at restrict_enrollments_to_section_dates))
-    if section.course.grants_any_right?(user, :read_sis, :manage_sis)
+    if options[:allow_sis_ids] || section.course.grants_any_right?(user, :read_sis, :manage_sis)
       res['sis_section_id'] = section.sis_source_id
       res['sis_course_id'] = section.course.sis_source_id
       res['integration_id'] = section.integration_id
@@ -52,7 +52,7 @@ module Api::V1::Section
     res
   end
 
-  def sections_json(sections, user, session, includes = [])
+  def sections_json(sections, user, session, includes = [], options = {})
-    sections.map { |s| section_json(s, user, session, includes) }
+    sections.map { |s| section_json(s, user, session, includes, options) }
   end
 end

spec/controllers/gradebooks_controller_spec.rb

@@ -561,6 +561,13 @@ describe GradebooksController do
         expect(api_max_per_page).to eq(50)
       end
 
+      it "includes sis_section_id on the sections even if the teacher doesn't have 'Read SIS Data' permissions" do
+        @course.root_account.role_overrides.create!(permission: :read_sis, enabled: false, role: teacher_role)
+        get :show, params: { course_id: @course.id }
+        section = gradebook_options.fetch(:sections).first
+        expect(section).to have_key :sis_section_id
+      end
+
       describe "graded_late_or_missing_submissions_exist" do
         it "is not included if New Gradebook is disabled" do
           get :show, params: {course_id: @course.id}