fix

core/apps/orders/admin/party.py

@@ -25,9 +25,10 @@ class PartyAdmin(admin.ModelAdmin):
     search_fields = [
         "number", "orders__counterparty__name"
     ]
+    autocomplete_fields = ['orders']
 
     def get_queryset(self, request):
-        return super().get_queryset(request).select_related('party_amount')
+        return super().get_queryset(request).select_related('party_amount', 'mediator').prefetch_related('orders')
 
 
 @admin.register(PartyAmount)

core/apps/orders/models/party.py

@@ -78,6 +78,7 @@ class Party(BaseModel):
             percentage += order.completion_percentage
         if percentage > 0 and count > 0:
             self.process = percentage / count
+        self.party_amount.save()
 
         return super().save(*args, **kwargs)
         
@@ -98,6 +99,8 @@ class PartyAmount(BaseModel):
     overdue_amount = models.DecimalField(max_digits=15, decimal_places=2, default=0.00)
 
     def save(self, *args, **kwargs):
+        self.total_price = self.party.orders.aggregate(total_price=models.Sum('total_price'))['total_price'] or 0
+        self.calculated_amount = self.total_price
         if self.calculated_amount < self.paid_amount:
             self.overdue_amount = self.paid_amount - self.calculated_amount
             self.payment_amount = 0