🐛 Forward by_alias and by_name to model_validate

SQLModel overrides model_validate but did not pass through the by_alias
and by_name arguments that Pydantic supports. Since SQLModel requires
pydantic>=2.11, where both are always available, calling
Model.model_validate(data, by_alias=True) (or by_name=True) raised
TypeError: unexpected keyword argument.

Add both parameters to the model_validate override and to
sqlmodel_validate, forwarding them to validate_python.

Author: ATOM00blue

sqlmodel/_compat.py

@@ -280,6 +280,8 @@ def sqlmodel_validate(
     strict: bool | None = None,
     from_attributes: bool | None = None,
     context: dict[str, Any] | None = None,
+    by_alias: bool | None = None,
+    by_name: bool | None = None,
     update: dict[str, Any] | None = None,
 ) -> _TSQLModel:
     if not is_table_model_class(cls):
@@ -303,6 +305,8 @@ def sqlmodel_validate(
         strict=strict,
         from_attributes=from_attributes,
         context=context,
+        by_alias=by_alias,
+        by_name=by_name,
         self_instance=new_obj,
     )
     # Capture fields set to restore it later

sqlmodel/main.py

@@ -876,6 +876,8 @@ def model_validate(  # ty: ignore[invalid-method-override]
         strict: bool | None = None,
         from_attributes: bool | None = None,
         context: builtins.dict[str, Any] | None = None,
+        by_alias: bool | None = None,
+        by_name: bool | None = None,
         update: builtins.dict[str, Any] | None = None,
     ) -> _TSQLModel:
         return sqlmodel_validate(
@@ -884,6 +886,8 @@ def model_validate(  # ty: ignore[invalid-method-override]
             strict=strict,
             from_attributes=from_attributes,
             context=context,
+            by_alias=by_alias,
+            by_name=by_name,
             update=update,
         )
 

tests/test_aliases.py

@@ -179,3 +179,26 @@ class M(SQLModel):
     assert m.f == "ok"
     data = m.model_dump(by_alias=True)
     assert "custom" in data and "gen_f" not in data
+
+
+@pytest.mark.parametrize("model", [PydanticUser, SQLModelUser])
+def test_model_validate_by_name(
+    model: type[PydanticUser] | type[SQLModelUser],
+):
+    # By default, a field with an alias can't be populated by its name
+    with pytest.raises(ValidationError):
+        model.model_validate({"full_name": "Greg"})
+    # With by_name=True, the field name is accepted
+    user = model.model_validate({"full_name": "Greg"}, by_name=True)
+    assert user.full_name == "Greg"
+
+
+@pytest.mark.parametrize("model", [PydanticUser, SQLModelUser])
+def test_model_validate_by_alias_and_by_name(
+    model: type[PydanticUser] | type[SQLModelUser],
+):
+    # With both enabled, either the alias or the field name is accepted
+    by_alias = model.model_validate({"fullName": "Helen"}, by_alias=True, by_name=True)
+    assert by_alias.full_name == "Helen"
+    by_name = model.model_validate({"full_name": "Helen"}, by_alias=True, by_name=True)
+    assert by_name.full_name == "Helen"