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app/db/base.py

@@ -0,0 +1,22 @@
+from __future__ import annotations
+
+from datetime import datetime
+
+from sqlalchemy import func
+from sqlmodel import Field, SQLModel
+
+
+class TimestampMixin(SQLModel):
+    created_at: datetime = Field(
+        default_factory=datetime.utcnow,
+        sa_column_kwargs={"server_default": func.now()},
+    )
+    updated_at: datetime = Field(
+        default_factory=datetime.utcnow,
+        sa_column_kwargs={"server_default": func.now(), "onupdate": func.now()},
+    )
+
+
+class SoftDeleteMixin(SQLModel):
+    is_deleted: bool = Field(default=False)
+    deleted_at: datetime | None = Field(default=None)