fix: unable to update TransactionRuleAction

app/apps/rules/forms.py

@@ -102,13 +102,21 @@ class TransactionRuleActionForm(forms.ModelForm):
         field = cleaned_data.get("field")
 
         if field and self.rule:
-            if TransactionRuleAction.objects.filter(
+            # Create a queryset that excludes the current instance
+            existing_action = TransactionRuleAction.objects.filter(
                 rule=self.rule, field=field
-            ).exists():
+            )
+
+            if self.instance.pk:
+                existing_action = existing_action.exclude(pk=self.instance.pk)
+
+            if existing_action.exists():
                 raise ValidationError(
                     _("A value for this field already exists in the rule.")
                 )
 
+        return cleaned_data
+
     def save(self, commit=True):
         instance = super().save(commit=False)
         instance.rule = self.rule

app/apps/rules/views.py

@@ -169,13 +169,17 @@ def transaction_rule_action_edit(request, transaction_rule_action_id):
     transaction_rule_action = get_object_or_404(
         TransactionRuleAction, id=transaction_rule_action_id
     )
+    transaction_rule = get_object_or_404(
+        TransactionRule, id=transaction_rule_action.rule.id
+    )
 
     if request.method == "POST":
-        form = TransactionRuleActionForm(request.POST, instance=transaction_rule_action)
+        form = TransactionRuleActionForm(
+            request.POST, instance=transaction_rule_action, rule=transaction_rule
+        )
         if form.is_valid():
-            action = form.save(commit=False)
-            action.rule = transaction_rule_action.rule
-            action.save()
+            form.save()
+            messages.success(request, _("Action updated successfully"))
 
             return HttpResponse(
                 status=204,
@@ -184,7 +188,9 @@ def transaction_rule_action_edit(request, transaction_rule_action_id):
                 },
             )
     else:
-        form = TransactionRuleActionForm(instance=transaction_rule_action)
+        form = TransactionRuleActionForm(
+            instance=transaction_rule_action, rule=transaction_rule
+        )
 
     return render(
         request,