locale: add lazy translations to missing ValidationErrors

app/apps/api/fields/transactions.py

@@ -1,6 +1,7 @@
 from drf_spectacular.types import OpenApiTypes
 from drf_spectacular.utils import extend_schema_field
 from rest_framework import serializers
+from django.utils.translation import gettext_lazy as _
 
 from apps.transactions.models import (
     TransactionCategory,
@@ -25,13 +26,13 @@ class TransactionCategoryField(serializers.Field):
                 return TransactionCategory.objects.get(pk=data)
             except TransactionCategory.DoesNotExist:
                 raise serializers.ValidationError(
-                    "Category with this ID does not exist."
+                    _("Category with this ID does not exist.")
                 )
         elif isinstance(data, str):
             category, created = TransactionCategory.objects.get_or_create(name=data)
             return category
         raise serializers.ValidationError(
-            "Invalid category data. Provide an ID or name."
+            _("Invalid category data. Provide an ID or name.")
         )
 
     @staticmethod
@@ -61,13 +62,13 @@ class TransactionTagField(serializers.Field):
                     tag = TransactionTag.objects.get(pk=item)
                 except TransactionTag.DoesNotExist:
                     raise serializers.ValidationError(
-                        f"Tag with ID {item} does not exist."
+                        _("Tag with this ID does not exist.")
                     )
             elif isinstance(item, str):
                 tag, created = TransactionTag.objects.get_or_create(name=item)
             else:
                 raise serializers.ValidationError(
-                    "Invalid tag data. Provide an ID or name."
+                    _("Invalid tag data. Provide an ID or name.")
                 )
             tags.append(tag)
         return tags
@@ -85,13 +86,13 @@ class TransactionEntityField(serializers.Field):
                     entity = TransactionEntity.objects.get(pk=item)
                 except TransactionTag.DoesNotExist:
                     raise serializers.ValidationError(
-                        f"Entity with ID {item} does not exist."
+                        _("Entity with this ID does not exist.")
                     )
             elif isinstance(item, str):
                 entity, created = TransactionEntity.objects.get_or_create(name=item)
             else:
                 raise serializers.ValidationError(
-                    "Invalid entity data. Provide an ID or name."
+                    _("Invalid entity data. Provide an ID or name.")
                 )
             entities.append(entity)
         return entities

app/apps/common/fields/forms/dynamic_select.py

@@ -1,6 +1,7 @@
 from django import forms
 from django.core.exceptions import ValidationError
 from django.db import transaction
+from django.utils.translation import gettext_lazy as _
 
 from apps.common.widgets.tom_select import TomSelect, TomSelectMultiple
 
@@ -124,7 +125,7 @@ class DynamicModelMultipleChoiceField(forms.ModelMultipleChoiceField):
                 )
             return instance
         except Exception as e:
-            raise ValidationError(f"Error creating new instance: {str(e)}")
+            raise ValidationError(_("Error creating new instance"))
 
     def clean(self, value):
         """
@@ -160,6 +161,6 @@ class DynamicModelMultipleChoiceField(forms.ModelMultipleChoiceField):
             try:
                 new_objects.append(self._create_new_instance(new_value))
             except ValidationError as e:
-                raise ValidationError(f"Error creating '{new_value}': {str(e)}")
+                raise ValidationError(_("Error creating new instance"))
 
         return existing_objects + new_objects

app/apps/common/fields/month_year.py

@@ -18,7 +18,7 @@ class MonthYearModelField(models.DateField):
             # Set the day to 1
             return date.replace(day=1).date()
         except ValueError:
-            raise ValidationError("Invalid date format. Use YYYY-MM.")
+            raise ValidationError(_("Invalid date format. Use YYYY-MM."))
 
     def formfield(self, **kwargs):
         kwargs["widget"] = MonthYearWidget

app/apps/transactions/forms.py

@@ -327,7 +327,7 @@ class TransferForm(forms.Form):
         to_account = cleaned_data.get("to_account")
 
         if from_account == to_account:
-            raise forms.ValidationError("From and To accounts must be different.")
+            raise forms.ValidationError(_("From and To accounts must be different."))
 
         return cleaned_data