Merge pull request #19560 from edx/REVMI-2

add informational banners when masquerading as user who would not have access due to start date

common/djangoapps/student/role_helpers.py

@@ -0,0 +1,38 @@
+"""
+Helpers for student roles
+"""
+from django_comment_common.models import (
+    FORUM_ROLE_ADMINISTRATOR,
+    FORUM_ROLE_MODERATOR,
+    FORUM_ROLE_GROUP_MODERATOR,
+    FORUM_ROLE_COMMUNITY_TA,
+    Role
+)
+from student.roles import (
+    CourseBetaTesterRole,
+    CourseInstructorRole,
+    CourseStaffRole,
+    OrgStaffRole,
+    OrgInstructorRole,
+    GlobalStaff
+)
+
+
+def has_staff_roles(user, course_key):
+    """
+    Return true if a user has any of the following roles
+    Staff, Instructor, Beta Tester, Forum Community TA, Forum Group Moderator, Forum Moderator, Forum Administrator
+    """
+    forum_roles = [FORUM_ROLE_COMMUNITY_TA, FORUM_ROLE_GROUP_MODERATOR,
+                   FORUM_ROLE_MODERATOR, FORUM_ROLE_ADMINISTRATOR]
+    is_staff = CourseStaffRole(course_key).has_user(user)
+    is_instructor = CourseInstructorRole(course_key).has_user(user)
+    is_beta_tester = CourseBetaTesterRole(course_key).has_user(user)
+    is_org_staff = OrgStaffRole(course_key.org).has_user(user)
+    is_org_instructor = OrgInstructorRole(course_key.org).has_user(user)
+    is_global_staff = GlobalStaff().has_user(user)
+    has_forum_role = Role.user_has_role_for_course(user, course_key, forum_roles)
+    if any([is_staff, is_instructor, is_beta_tester, is_org_staff,
+            is_org_instructor, is_global_staff, has_forum_role]):
+        return True
+    return False