refactor: Replace deprecated request.is_ajax()

ietf/community/views.py

@@ -22,6 +22,7 @@ from ietf.community.utils import docs_tracked_by_community_list, docs_matching_c
 from ietf.community.utils import states_of_significant_change, reset_name_contains_index_for_rule
 from ietf.doc.models import DocEvent, Document
 from ietf.doc.utils_search import prepare_document_table
+from ietf.utils.http import is_ajax
 from ietf.utils.response import permission_denied
 
 def view_list(request, username=None):
@@ -142,7 +143,7 @@ def track_document(request, name, username=None, acronym=None):
         if not doc in clist.added_docs.all():
             clist.added_docs.add(doc)
 
-        if request.is_ajax():
+        if is_ajax(request):
             return HttpResponse(json.dumps({ 'success': True }), content_type='application/json')
         else:
             return HttpResponseRedirect(clist.get_absolute_url())
@@ -162,7 +163,7 @@ def untrack_document(request, name, username=None, acronym=None):
         if clist.pk is not None:
             clist.added_docs.remove(doc)
 
-        if request.is_ajax():
+        if is_ajax(request):
             return HttpResponse(json.dumps({ 'success': True }), content_type='application/json')
         else:
             return HttpResponseRedirect(clist.get_absolute_url())

ietf/doc/views_review.py

@@ -53,6 +53,7 @@ from ietf.utils.textupload import get_cleaned_text_file_content
 from ietf.utils.mail import send_mail_message
 from ietf.mailtrigger.utils import gather_address_lists
 from ietf.utils.fields import MultiEmailField
+from ietf.utils.http import is_ajax
 from ietf.utils.response import permission_denied
 from ietf.utils.timezone import date_today, DEADLINE_TZINFO
 
@@ -1090,7 +1091,7 @@ def _generate_ajax_or_redirect_response(request, doc):
     redirect_url = request.GET.get('next')
     url_is_safe = is_safe_url(url=redirect_url, allowed_hosts=request.get_host(),
                               require_https=request.is_secure())
-    if request.is_ajax():
+    if is_ajax(request):
         return HttpResponse(json.dumps({'success': True}), content_type='application/json')
     elif url_is_safe:
         return HttpResponseRedirect(redirect_url)

ietf/utils/http.py

@@ -0,0 +1,10 @@
+# Copyright The IETF Trust 2023, All Rights Reserved
+# -*- coding: utf-8 -*-
+
+def is_ajax(request):
+    """Checks whether a request was an AJAX call
+
+    See https://docs.djangoproject.com/en/3.1/releases/3.1/#id2 - this implements the
+    exact reproduction of the deprecated method suggested there.
+    """
+    return request.headers.get("x-requested-with") == "XMLHttpRequest"