table follow requires the id length of user

2026-05-18 22:36:23 +08:00
parent a73b3cce26
commit d457c07f40
2 changed files with 23 additions and 3 deletions
@@ -60,6 +60,11 @@ class AutoID:
    _id_prefix_len = 3   # 前缀长度
    _id_payload_len = 22 # 主体长度（ULID 转 Base62 最大约 22 位）
    
+    @classmethod
+    def id_length(cls) -> int:
+        """返回当前类 ID 的总长度"""
+        return cls._id_prefix_len + cls._id_payload_len
+    
    @declared_attr
    def id(cls):
        # 运行时动态获取子类的 __tablename__
@@ -74,4 +79,4 @@ class AutoID:
            payload = gen_convex_payload(length=s_len)
            return f"{prefix}{payload}"

-        return Column(String(p_len + s_len), primary_key=True, default=id_factory)
+        return Column(String(cls.id_length()), primary_key=True, default=id_factory)