Fix #117: TypeError with LazyProxy object in keyboards

aiogram/types/base.py

@@ -4,6 +4,8 @@ import io
 import typing
 from typing import TypeVar
 
+from babel.support import LazyProxy
+
 from .fields import BaseField
 from ..utils import json
 from ..utils.mixins import ContextInstanceMixin
@@ -163,6 +165,8 @@ class TelegramObject(ContextInstanceMixin, metaclass=MetaTelegramObject):
                 value = self.props[name].export(self)
             if isinstance(value, TelegramObject):
                 value = value.to_python()
+            if isinstance(value, LazyProxy):
+                value = str(value)
             result[self.props_aliases.get(name, name)] = value
         return result
 

aiogram/utils/payload.py

@@ -1,6 +1,8 @@
 import datetime
 import secrets
 
+from babel.support import LazyProxy
+
 from aiogram import types
 from . import json
 
@@ -57,6 +59,8 @@ def prepare_arg(value):
         return int((now + value).timestamp())
     elif isinstance(value, datetime.datetime):
         return round(value.timestamp())
+    elif isinstance(value, LazyProxy):
+        return str(value)
     return value