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馃悰 Fix setting nullable property of Fields that don't accept `None` by van51 路 Pull Request #79 路 fastapi/sqlmodel 路 GitHub

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馃悰 Fix setting nullable property of Fields that don't accept None #79

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Merged
tiangolo merged 3 commits into from
Aug 27, 2022
Conversation 10 Commits 3 Checks 0 Files changed
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馃悰 Fix setting nullable property of Fields that don't accept None #79

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83870d1
馃帹 Fix nullable property of Fields
van51 Sep 3, 2021
2877c12
Merge branch 'main' into bugfix/nullable_field
tiangolo Aug 27, 2022
33daef3
鈾伙笍 Move isnullable check after attribute to reset if it's a primary key
tiangolo Aug 27, 2022
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13 changes: 12 additions & 1 deletion sqlmodel/main.py
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Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,7 @@

from pydantic import BaseConfig, BaseModel
from pydantic.errors import ConfigError, DictError
from pydantic.fields import SHAPE_SINGLETON
from pydantic.fields import FieldInfo as PydanticFieldInfo
from pydantic.fields import ModelField, Undefined, UndefinedType
from pydantic.main import ModelMetaclass, validate_model
Expand Down Expand Up @@ -424,14 +425,14 @@ def get_column_from_field(field: ModelField) -> Column: # type: ignore
return sa_column
sa_type = get_sqlachemy_type(field)
primary_key = getattr(field.field_info, "primary_key", False)
nullable = not field.required
index = getattr(field.field_info, "index", Undefined)
if index is Undefined:
index = False
if hasattr(field.field_info, "nullable"):
field_nullable = getattr(field.field_info, "nullable")
if field_nullable != Undefined:
nullable = field_nullable
nullable = not primary_key and _is_field_nullable(field)
args = []
foreign_key = getattr(field.field_info, "foreign_key", None)
if foreign_key:
Expand Down Expand Up @@ -646,3 +647,13 @@ def _calculate_keys(
@declared_attr # type: ignore
def __tablename__(cls) -> str:
return cls.__name__.lower()


def _is_field_nullable(field: ModelField) -> bool:
if not field.required:
# Taken from [Pydantic](https://github.com/samuelcolvin/pydantic/blob/v1.8.2/pydantic/fields.py#L946-L947)
is_optional = field.allow_none and (
field.shape != SHAPE_SINGLETON or not field.sub_fields
)
return is_optional and field.default is None and field.default_factory is None
return False
2 changes: 1 addition & 1 deletion tests/test_tutorial/test_create_db_and_table/test_tutorial001.py
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Original file line number Diff line number Diff line change
Expand Up @@ -9,7 +9,7 @@ def test_create_db_and_table(cov_tmp_path: Path):
assert "BEGIN" in result.stdout
assert 'PRAGMA main.table_info("hero")' in result.stdout
assert "CREATE TABLE hero (" in result.stdout
assert "id INTEGER," in result.stdout
assert "id INTEGER NOT NULL," in result.stdout
assert "name VARCHAR NOT NULL," in result.stdout
assert "secret_name VARCHAR NOT NULL," in result.stdout
assert "age INTEGER," in result.stdout
Expand Down
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