feat: 新增后台选择过期方式

apps/base/models.py

@@ -24,7 +24,6 @@ class FileCodes(Model):
     expired_at: Optional[datetime] = fields.DatetimeField(null=True, description='过期时间')
     expired_count: Optional[int] = fields.IntField(description='可用次数', default=0)
     used_count: Optional[int] = fields.IntField(description='已用次数', default=0)
-
     created_at: Optional[datetime] = fields.DatetimeField(auto_now_add=True, description='创建时间')
 
     async def is_expired(self):
@@ -41,4 +40,11 @@ class FileCodes(Model):
         return f"{self.file_path}/{self.uuid_file_name}"
 
 
+class KeyValue(Model):
+    id: Optional[int] = fields.IntField(pk=True)
+    key: Optional[str] = fields.CharField(max_length=255, description='键', index=True, unique=True)
+    value: Optional[str] = fields.JSONField(description='值', null=True)
+    created_at: Optional[datetime] = fields.DatetimeField(auto_now_add=True, description='创建时间')
+
+
 file_codes_pydantic = pydantic_model_creator(FileCodes, name='FileCodes')