✨ Add created_at field to User and Item models

Author: alejsdev

backend/app/alembic/versions/44fc2bbcc925_add_created_at_to_user_and_item.py

@@ -0,0 +1,31 @@
+"""Add created_at to User and Item
+
+Revision ID: 44fc2bbcc925
+Revises: 1a31ce608336
+Create Date: 2026-01-23 15:42:52.493895
+
+"""
+from alembic import op
+import sqlalchemy as sa
+import sqlmodel.sql.sqltypes
+
+
+# revision identifiers, used by Alembic.
+revision = '44fc2bbcc925'
+down_revision = '1a31ce608336'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('item', sa.Column('created_at', sa.DateTime(timezone=True), nullable=False))
+    op.add_column('user', sa.Column('created_at', sa.DateTime(timezone=True), nullable=False))
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column('user', 'created_at')
+    op.drop_column('item', 'created_at')
+    # ### end Alembic commands ###

backend/app/api/routes/items.py

@@ -21,7 +21,7 @@ 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(Item.created_at.desc()).offset(skip).limit(limit)
         items = session.exec(statement).all()
     else:
         count_statement = (
@@ -33,6 +33,7 @@ def read_items(
         statement = (
             select(Item)
             .where(Item.owner_id == current_user.id)
+            .order_by(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(User.created_at.desc()).offset(skip).limit(limit)
     users = session.exec(statement).all()
 
     return UsersPublic(data=users, count=count)

backend/app/models.py

@@ -1,9 +1,15 @@
 import uuid
+from datetime import datetime, timezone
 
 from pydantic import EmailStr
+from sqlalchemy import DateTime
 from sqlmodel import Field, Relationship, SQLModel
 
 
+def get_datetime_utc() -> datetime:
+    return datetime.now(timezone.utc)
+
+
 # Shared properties
 class UserBase(SQLModel):
     email: EmailStr = Field(unique=True, index=True, max_length=255)
@@ -43,6 +49,10 @@ 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=get_datetime_utc,
+        sa_type=DateTime(timezone=True),  # type: ignore
+    )
     items: list["Item"] = Relationship(back_populates="owner", cascade_delete=True)
 
 
@@ -75,6 +85,10 @@ 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=get_datetime_utc,
+        sa_type=DateTime(timezone=True),  # type: ignore
+    )
     owner_id: uuid.UUID = Field(
         foreign_key="user.id", nullable=False, ondelete="CASCADE"
     )