🐛 Fix support for Annotated fields with Pydantic 2.12+ (#1607)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Sofie Van Landeghem <svlandeg@users.noreply.github.com>
Co-authored-by: svlandeg <svlandeg@github.com>
Co-authored-by: pre-commit-ci-lite[bot] <117423508+pre-commit-ci-lite[bot]@users.noreply.github.com>
Co-authored-by: Sebastián Ramírez <tiangolo@gmail.com>

tests/test_future_annotations.py

@@ -0,0 +1,63 @@
+from __future__ import annotations
+
+from typing import Annotated, Optional
+
+from sqlmodel import Field, Session, SQLModel, create_engine, select
+
+
+def test_model_with_future_annotations(clear_sqlmodel):
+    class Hero(SQLModel, table=True):
+        id: Annotated[Optional[int], Field(primary_key=True)] = None
+        name: str
+        secret_name: str
+        age: Optional[int] = None
+
+    hero = Hero(name="Deadpond", secret_name="Dive Wilson", age=25)
+
+    engine = create_engine("sqlite://")
+    SQLModel.metadata.create_all(engine)
+
+    with Session(engine) as session:
+        session.add(hero)
+        session.commit()
+        session.refresh(hero)
+
+        assert hero.id is not None
+        assert hero.name == "Deadpond"
+        assert hero.secret_name == "Dive Wilson"
+        assert hero.age == 25
+
+    with Session(engine) as session:
+        heroes = session.exec(select(Hero)).all()
+        assert len(heroes) == 1
+        assert heroes[0].name == "Deadpond"
+
+
+def test_model_with_string_annotations(clear_sqlmodel):
+    class Team(SQLModel, table=True):
+        id: Annotated[Optional[int], Field(primary_key=True)] = None
+        name: str
+
+    class Player(SQLModel, table=True):
+        id: Annotated[Optional[int], Field(primary_key=True)] = None
+        name: str
+        team_id: Annotated[Optional[int], Field(foreign_key="team.id")] = None
+
+    engine = create_engine("sqlite://")
+    SQLModel.metadata.create_all(engine)
+
+    team = Team(name="Champions")
+    player = Player(name="Alice", team_id=None)
+
+    with Session(engine) as session:
+        session.add(team)
+        session.commit()
+        session.refresh(team)
+
+        player.team_id = team.id
+        session.add(player)
+        session.commit()
+        session.refresh(player)
+
+        assert team.id is not None
+        assert player.team_id == team.id