django4: replaced deprecated request.is_ajax() call (#68585)

combo/apps/dashboard/views.py

@@ -37,6 +37,7 @@ from rest_framework.response import Response
 
 from combo.data.models import CellBase, ConfigJsonCell
 from combo.public.views import render_cell
+from combo.utils import is_ajax
 
 from .models import DashboardCell, Tile
 from .templatetags.dashboard import get_cell_data
@@ -45,7 +46,7 @@ from .templatetags.dashboard import get_cell_data
 def dashboard_success(request, dashboard, cell_data):
     dashboard_url = dashboard.page.get_online_url()
 
-    if request.is_ajax():
+    if is_ajax(request):
         return HttpResponse(
             json.dumps({'err': 0, 'url': request.build_absolute_uri(dashboard_url), 'cell_data': cell_data}),
             content_type='application/json',

combo/apps/lingo/views.py

@@ -49,7 +49,7 @@ from django.views.generic import DetailView, ListView, TemplateView, View
 from combo.data.models import Page
 from combo.profile.utils import get_user_from_name_id
 from combo.public.views import publish_page
-from combo.utils import DecryptionError, aes_hex_decrypt, check_request_signature
+from combo.utils import DecryptionError, aes_hex_decrypt, check_request_signature, is_ajax
 
 from .models import (
     EXPIRED,
@@ -844,7 +844,7 @@ class ItemView(TemplateView):
             return {'item': None, 'err_desc': _('No item was found.')}
 
     def get_template_names(self):
-        if self.request.is_ajax:
+        if is_ajax(self.request):
             return ['lingo/combo/item.html']
         return ['lingo/combo/invoice_fullpage.html']
 

combo/manager/views.py

@@ -66,7 +66,7 @@ from combo.data.utils import (
     import_site_tar,
 )
 from combo.urls_utils import staff_required
-from combo.utils.misc import is_portal_agent
+from combo.utils.misc import is_ajax, is_portal_agent
 
 from .forms import (
     CellDuplicateForm,
@@ -1043,7 +1043,7 @@ class PageListCellEditLinkView(ManagedPageMixin, UpdateView):
         return self.model().get_form_class_for_link_list_cell()
 
     def form_valid(self, form):
-        if self.request.is_ajax():
+        if is_ajax(self.request):
             self.object = form.save()
             response = self.form_invalid(form)  # avoid redirection
         else:

combo/public/views.py

@@ -141,7 +141,7 @@ def ajax_page_cell(request, page_pk, cell_reference):
             action_response = cell.post(request)
         except PostException as e:
             exception = e
-            if not request.is_ajax():
+            if not utils.is_ajax(request):
                 messages.error(request, force_str(e) if force_str(e) != 'None' else _('Error sending data.'))
 
         if action_response:
@@ -152,7 +152,7 @@ def ajax_page_cell(request, page_pk, cell_reference):
                 response['Content-Disposition'] = action_response.headers['Content-Disposition']
             return response
 
-        if not request.is_ajax():
+        if not utils.is_ajax(request):
             return HttpResponseRedirect(cell.page.get_online_url())
 
     response = render_cell(request, cell)

combo/utils/__init__.py

@@ -17,7 +17,7 @@
 # import specific symbols for compatibility
 from .cache import cache_during_request
 from .crypto import DecryptionError, aes_hex_decrypt, aes_hex_encrypt
-from .misc import ellipsize, flatten_context
+from .misc import ellipsize, flatten_context, is_ajax
 from .requests_wrapper import NothingInCacheException, requests
 from .signature import check_query, check_request_signature, sign_url
 from .urls import TemplateError, get_templated_url, is_templated_url

combo/utils/misc.py

@@ -64,3 +64,7 @@ def is_portal_agent():
             if service.get('is-portal-agent') and not service.get('secret'):
                 return True
     return False
+
+
+def is_ajax(request):
+    return request.headers.get('x-requested-with') == 'XMLHttpRequest'