✨ ✨ Add created_at field to User and Item models; update read_items and read_users to order by created_at

Author: alejsdev

backend/app/api/routes/items.py

@@ -2,7 +2,7 @@
 from typing import Any
 
 from fastapi import APIRouter, HTTPException
-from sqlmodel import func, select
+from sqlmodel import col, func, select
 
 from app.api.deps import CurrentUser, SessionDep
 from app.models import Item, ItemCreate, ItemPublic, ItemsPublic, ItemUpdate, Message
@@ -21,7 +21,9 @@ def read_items(
     if current_user.is_superuser:
         count_statement = select(func.count()).select_from(Item)
         count = session.exec(count_statement).one()
-        statement = select(Item).offset(skip).limit(limit)
+        statement = (
+            select(Item).order_by(col(Item.created_at).desc()).offset(skip).limit(limit)
+        )
         items = session.exec(statement).all()
     else:
         count_statement = (
@@ -33,6 +35,7 @@ def read_items(
         statement = (
             select(Item)
             .where(Item.owner_id == current_user.id)
+            .order_by(col(Item.created_at).desc())
             .offset(skip)
             .limit(limit)
         )

backend/app/api/routes/users.py

@@ -42,7 +42,7 @@ def read_users(session: SessionDep, skip: int = 0, limit: int = 100) -> Any:
     count_statement = select(func.count()).select_from(User)
     count = session.exec(count_statement).one()
 
-    statement = select(User).offset(skip).limit(limit)
+    statement = select(User).order_by(col(User.created_at).desc()).offset(skip).limit(limit)
     users = session.exec(statement).all()
 
     return UsersPublic(data=users, count=count)

backend/app/models.py

@@ -1,6 +1,8 @@
 import uuid
+from datetime import datetime, timezone
 
 from pydantic import EmailStr
+from sqlalchemy import DateTime
 from sqlmodel import Field, Relationship, SQLModel
 
 
@@ -43,6 +45,10 @@ class UpdatePassword(SQLModel):
 class User(UserBase, table=True):
     id: uuid.UUID = Field(default_factory=uuid.uuid4, primary_key=True)
     hashed_password: str
+    created_at: datetime = Field(
+        default_factory=lambda: datetime.now(timezone.utc),
+        sa_type=DateTime(timezone=True),  # type: ignore
+    )
     items: list["Item"] = Relationship(back_populates="owner", cascade_delete=True)
 
 
@@ -75,6 +81,10 @@ class ItemUpdate(ItemBase):
 # Database model, database table inferred from class name
 class Item(ItemBase, table=True):
     id: uuid.UUID = Field(default_factory=uuid.uuid4, primary_key=True)
+    created_at: datetime = Field(
+        default_factory=lambda: datetime.now(timezone.utc),
+        sa_type=DateTime(timezone=True),  # type: ignore
+    )
     owner_id: uuid.UUID = Field(
         foreign_key="user.id", nullable=False, ondelete="CASCADE"
     )