add message

polls/models.py

@@ -213,3 +213,6 @@ class AppVersion(models.Model):
     version = models.IntegerField('version', default=1)
     added = models.DateTimeField(auto_now_add=True)
     updated = models.DateTimeField(auto_now=True)
+
+    class Meta:
+        ordering = ["-version"]

polls/urls.py

@@ -71,5 +71,6 @@ urlpatterns = [
     path('messages/read/', views.read_message,
          name='polls_message_read'),
     path('app/intro.html', views.app_intro, name='polls_app_intro'),
-    path('app/download/', views.download, name='polls_app_download')
+    path('app/download/', views.download, name='polls_app_download'),
+    path('app/has/update/', views.has_update, name='polls_app_has_update')
 ]

polls/views/__init__.py

@@ -8,4 +8,4 @@ from .group import groups, room, is_level1_or_leve2, group_member, group_manager
 from .compartment import compartments
 from .organizations import organizations, organization_level
 from .message import last_messages, send_text_message, is_read_message, read_message
-from .app import download, app_intro
+from .download import download, app_intro, has_update

polls/views/download.py

@@ -10,7 +10,7 @@ def app_intro(request):
 
 
 def download(request):
-    app = AppVersion.objects.last('version')
+    app = AppVersion.objects.first()
     filename = 'app-%s.apk' % (app.version,)
     file_path = os.path.join(settings.MEDIA_ROOT, filename)
     if os.path.exists(file_path):
@@ -25,5 +25,5 @@ def download(request):
 
 def has_update(request):
     version = request.GET.get('version', '1')
-    last = AppVersion.objects.last('version')
+    last = AppVersion.objects.first()
     return JsonResponse({'status': 'success', 'message': last != version})