Добавил геофильтры. Теперь нужен рефакторинг.

dbapp/mainapp/views/map.py

@@ -126,6 +126,7 @@ class ShowSourcesMapView(LoginRequiredMixin, View):
     """View for displaying selected sources on map."""
 
     def get(self, request):
+        import json
         from ..models import Source
 
         ids = request.GET.get("ids", "")
@@ -168,8 +169,18 @@ class ShowSourcesMapView(LoginRequiredMixin, View):
         else:
             return redirect("mainapp:home")
 
+        # Get polygon filter from URL if present
+        polygon_coords_str = request.GET.get("polygon", "").strip()
+        polygon_coords = None
+        if polygon_coords_str:
+            try:
+                polygon_coords = json.loads(polygon_coords_str)
+            except (json.JSONDecodeError, ValueError, TypeError):
+                polygon_coords = None
+
         context = {
             "groups": groups,
+            "polygon_coords": json.dumps(polygon_coords) if polygon_coords else None,
         }
         return render(request, "mainapp/source_map.html", context)