MEJORA: Fix N+1 query problems in project_list and export_expenses_csv

expenses/models.py

@@ -83,6 +83,8 @@ class Project(CatalogModel):
 
     @property
     def total_expenses_clp(self):
+        if hasattr(self, 'total_expenses'):
+            return self.total_expenses or Decimal('0.00')
         return self.expenses.aggregate(total=models.Sum('amount_clp'))['total'] or Decimal('0.00')
 
     @property

expenses/views.py

@@ -1,5 +1,8 @@
 import csv
 import io
+import logging
+
+logger = logging.getLogger(__name__)
 from decimal import Decimal
 from django.views.generic import ListView, CreateView, UpdateView, DeleteView
 from django.contrib.auth.mixins import LoginRequiredMixin
@@ -353,7 +356,7 @@ def export_expenses_csv(request):
         'Responsable', 'Detalle', 'Region', 'Comuna', 'Proveedor'
     ])
 
-    expenses = Expense.objects.all().select_related('project', 'responsible_person')
+    expenses = Expense.objects.all().select_related('project', 'responsible_person', 'vendor')
     for exp in expenses:
         writer.writerow([
             exp.id,
@@ -870,8 +873,8 @@ def delete_document(request, pk):
             try:
                 if os.path.exists(doc.file.path):
                     os.remove(doc.file.path)
-            except Exception:
-                pass
+            except Exception as e:
+                logger.error(f"Error removing file: {e}", exc_info=True)
                 
         # Delete object
         doc.delete()