@@ -2,6 +2,7 @@
 from typing import Any, ClassVar
 
 from ..errors import NonNumericIDError, TooLongIDError
+from ..utils import capitalize, snake_case
 
 
 @dataclass(frozen=True, slots=True)
@@ -11,30 +12,24 @@ class BaseModel:
     no: int = field(init=False)
     id_length: ClassVar[int] = 2
 
-    def __init_subclass__(cls) -> None:
-        super().__init_subclass__()
-
-        if getattr(cls, "__hash__", None) is None:
-            cls.__hash__ = BaseModel.__hash__
-
     def __post_init__(self) -> None:
         object.__setattr__(self, "id", self.validate_id(self.id))
 
     @classmethod
     def validate_id(cls, id: str) -> str:
-        id = id.rjust(cls.id_length, "0")
-
-        if len(id) > cls.id_length:
-            raise TooLongIDError(id, cls.id_length, cls.__name__)
+        id = id.strip().rjust(cls.id_length, "0")
 
         if not id.isnumeric():
             raise NonNumericIDError(id, cls.__name__)
 
+        if len(id) > cls.id_length:
+            raise TooLongIDError(id, cls.id_length, cls.__name__)
+
         return id
 
     def __getattribute__(self, name: str) -> Any:
         try:
-            return super().__getattribute__(name)
+            return object.__getattribute__(self, name)
 
         except AttributeError:
             class_name = type(self).__name__
@@ -44,7 +39,7 @@ def __getattribute__(self, name: str) -> Any:
                 raise AttributeError(
                     base_message +
                     f" Perhaps it was created without using the "
-                    f"'get_or_add_{class_name}' method?"
+                    f"'get_or_add_{snake_case(class_name)}' method?"
                 )
 
             raise
@@ -53,7 +48,7 @@ def __int__(self) -> int:
         return self.no
 
     def __str__(self) -> str:
-        return f"№{int(self)}"
+        return f"{capitalize(type(self).__name__)} №{int(self)}"
 
     def __hash__(self) -> int:
         return hash((self.id, self.no))
 
@@ -1,4 +1,4 @@
-from dataclasses import dataclass, field
+from dataclasses import dataclass
 
 from .base import BaseModel
 from .skin_rarity import SkinRarity
Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-from dataclasses import dataclass, field`
	`1`	`+from dataclasses import dataclass`
`2`	`2`
`3`	`3`	`from .base import BaseModel`
`4`	`4`	`from .skin_rarity import SkinRarity`