def get_schema_field(field: Field, *, depth: int = 0) -> Tuple:
alias = None
default = ...
default_factory = None
description = None
title = None
max_length = None
python_type = None
if field.is_relation:
if depth > 0:
return get_related_field_schema(field, depth=depth)
internal_type = field.related_model._meta.pk.get_internal_type()
if not field.concrete and field.auto_created or field.null:
default = None
if hasattr(field, "get_attname"):
alias = field.get_attname()
pk_type = TYPES.get(internal_type, int)
if field.one_to_many or field.many_to_many:
m2m_type = create_m2m_link_type(pk_type)
python_type = List[m2m_type]
else:
python_type = pk_type
else:
field_options = field.deconstruct()[3] # 3 are the keywords
blank = field_options.get("blank", False)
null = field_options.get("null", False)
max_length = field_options.get("max_length")
internal_type = field.get_internal_type()
python_type = TYPES[internal_type]
if field.has_default():
if callable(field.default):
default_factory = field.default
else:
default = field.default
elif field.primary_key or blank or null:
default = None
description = field.help_text
title = field.verbose_name.title()
return (
python_type,
FieldInfo(
default,
alias=alias,
default_factory=default_factory,
title=title,
description=description,
max_length=max_length,
),
)
def get_field_nullability(self, field: Field, method: Optional[str]) -> bool:
nullable = field.null
if not nullable and isinstance(field, CharField) and field.blank:
return True
if method == '__init__':
if field.primary_key or isinstance(field, ForeignKey):
return True
if method == 'create':
if isinstance(field, AutoField):
return True
if field.has_default():
return True
return nullable
