feat: Add support for Pydantic v2 aliases

Author: ravishan16

sqlmodel/_compat.py

@@ -228,6 +228,7 @@ def post_init_field_info(field_info: FieldInfo) -> None:
                 field_info.serialization_alias = field_info.alias
         else:
             field_info._validate()  # type: ignore[attr-defined]
+
     # Dummy to make it importable
     def _calculate_keys(
         self: "SQLModel",

tests/test_aliases.py

@@ -5,7 +5,6 @@
 from pydantic import Field as PField
 from sqlmodel import Field, SQLModel
 
-
 # -----------------------------------------------------------------------------------
 # Models
 
@@ -132,32 +131,36 @@ def test_json_by_alias(
 
 
 class PydanticUserV2(BaseModel):
-    first_name: str = PField(
-        validation_alias="firstName", serialization_alias="f_name"
-    )
+    first_name: str = PField(validation_alias="firstName", serialization_alias="f_name")
 
 
 class SQLModelUserV2(SQLModel):
-    first_name: str = Field(
-        validation_alias="firstName", serialization_alias="f_name"
-    )
+    first_name: str = Field(validation_alias="firstName", serialization_alias="f_name")
 
 
-@pytest.mark.skipif(not VERSION.startswith("2."), reason="validation_alias and serialization_alias are not supported in Pydantic v1")
+@pytest.mark.skipif(
+    not VERSION.startswith("2."),
+    reason="validation_alias and serialization_alias are not supported in Pydantic v1",
+)
 @pytest.mark.parametrize("model", [PydanticUserV2, SQLModelUserV2])
-def test_create_with_validation_alias(model: Union[Type[PydanticUserV2], Type[SQLModelUserV2]]):
+def test_create_with_validation_alias(
+    model: Union[Type[PydanticUserV2], Type[SQLModelUserV2]],
+):
     user = model(firstName="John")
     assert user.first_name == "John"
 
 
-@pytest.mark.skipif(not VERSION.startswith("2."), reason="validation_alias and serialization_alias are not supported in Pydantic v1")
+@pytest.mark.skipif(
+    not VERSION.startswith("2."),
+    reason="validation_alias and serialization_alias are not supported in Pydantic v1",
+)
 @pytest.mark.parametrize("model", [PydanticUserV2, SQLModelUserV2])
 def test_serialize_with_serialization_alias(
-    model: Union[Type[PydanticUserV2], Type[SQLModelUserV2]]
+    model: Union[Type[PydanticUserV2], Type[SQLModelUserV2]],
 ):
     user = model(firstName="Jane")
     data = user.dict(by_alias=True)
     assert "f_name" in data
     assert "firstName" not in data
     assert "first_name" not in data
-    assert data["f_name"] == "Jane"
+    assert data["f_name"] == "Jane"