add ai drawing

ai_service/models/base.py

@@ -1,3 +1,5 @@
+from datetime import datetime
+
 from db.session import Base
 from sqlalchemy import (
     Column, Integer, String, Text, DateTime, Boolean, Float, ForeignKey
@@ -8,6 +10,26 @@ class CoreModel(Base):
     __abstract__ = True
 
     id = Column(Integer, primary_key=True, autoincrement=True)
-    create_time = Column(DateTime)
-    update_time = Column(DateTime)
-    is_deleted = Column(Boolean, default=False)
+    remark = Column(String(256), nullable=True, comment="备注")
+    creator = Column(String(64), nullable=True, comment="创建人")
+    modifier = Column(String(64), nullable=True, comment="修改人")
+
+    # 创建时间 - 使用函数默认值，在插入时自动生成
+    create_time = Column(DateTime, default=datetime.now(), comment="创建时间")
+
+    # 修改时间 - 使用SQL函数，在更新时自动触发
+    update_time = Column(DateTime, default=datetime.now(), onupdate=datetime.now(), comment="修改时间")
+
+    is_deleted = Column(Boolean, default=False, comment="是否软删除")
+
+    # 软删除方法
+    # def soft_delete(self, session):
+    #     self.is_deleted = True
+    #     self.modifier = get_current_user()  # 需要实现这个函数获取当前用户
+    #     self.update_time = datetime.utcnow()
+    #     session.commit()
+
+    # 查询时自动过滤已删除记录
+    @classmethod
+    def get_active(cls, session):
+        return session.query(cls).filter(cls.is_deleted == False)