[Django 4.2 Support]: AttributeError: 'WSGIRequest' object has no attribute 'is_ajax'

[UsamaSadiq]

Description

• When running unit tests against Django 4.2, the error is being generated.
• Investigate and fix to allow supporting Django 4.2.

Test Run Logs

FAILED cms/djangoapps/maintenance/tests.py::MaintenanceViewAccessTests::test_global_staff_access_1__maintenance_force_publish_course - AttributeError: 'WSGIRequest' object has no attribute 'is_ajax'
FAILED cms/djangoapps/maintenance/tests.py::TestForcePublish::test_already_published - AttributeError: 'WSGIRequest' object has no attribute 'is_ajax'
FAILED cms/djangoapps/maintenance/tests.py::TestForcePublish::test_force_publish_dry_run - AttributeError: 'WSGIRequest' object has no attribute 'is_ajax'
FAILED cms/djangoapps/maintenance/tests.py::TestForcePublish::test_invalid_course_key_messages_1_______Please_provide_course_id___ - AttributeError: 'WSGIRequest' object has no attribute 'is_ajax'
FAILED cms/djangoapps/maintenance/tests.py::TestForcePublish::test_invalid_course_key_messages_2___edx____Invalid_course_key___ - AttributeError: 'WSGIRequest' object has no attribute 'is_ajax'
FAILED cms/djangoapps/maintenance/tests.py::TestForcePublish::test_invalid_course_key_messages_3___course_v1_e_d_X____No_matching_course_found___ - AttributeError: 'WSGIRequest' object has no attribute 'is_ajax'
====== 6 failed, 106 passed, 26 skipped, 267 warnings in 76.29s (0:01:16) ======

[UsamaSadiq]

request.is_ajax() was deprecated in Django 3.1 and now has been removed in Django 4.0.
Solution for the issue https://stackoverflow.com/a/70976929/20185847

Replacing

if request.is_ajax():

with

if request.headers.get('x-requested-with') == 'XMLHttpRequest':

should work.