mirror of
https://github.com/davidhalter/django-stubs.git
synced 2025-12-08 13:04:47 +08:00
47 lines
1.9 KiB
Python
47 lines
1.9 KiB
Python
from django.core.exceptions import FieldDoesNotExist
|
|
from mypy.nodes import TypeInfo
|
|
from mypy.plugin import MethodContext
|
|
from mypy.types import AnyType, Instance
|
|
from mypy.types import Type as MypyType
|
|
from mypy.types import TypeOfAny
|
|
|
|
from mypy_django_plugin.django.context import DjangoContext
|
|
from mypy_django_plugin.lib import fullnames, helpers
|
|
|
|
|
|
def _get_field_instance(ctx: MethodContext, field_fullname: str) -> MypyType:
|
|
field_info = helpers.lookup_fully_qualified_typeinfo(helpers.get_typechecker_api(ctx),
|
|
field_fullname)
|
|
assert isinstance(field_info, TypeInfo)
|
|
return Instance(field_info, [AnyType(TypeOfAny.explicit), AnyType(TypeOfAny.explicit)])
|
|
|
|
|
|
def return_proper_field_type_from_get_field(ctx: MethodContext, django_context: DjangoContext) -> MypyType:
|
|
# Options instance
|
|
assert isinstance(ctx.type, Instance)
|
|
|
|
model_type = ctx.type.args[0]
|
|
if not isinstance(model_type, Instance):
|
|
return _get_field_instance(ctx, fullnames.FIELD_FULLNAME)
|
|
|
|
model_cls = django_context.get_model_class_by_fullname(model_type.type.fullname())
|
|
if model_cls is None:
|
|
return _get_field_instance(ctx, fullnames.FIELD_FULLNAME)
|
|
|
|
field_name_expr = helpers.get_call_argument_by_name(ctx, 'field_name')
|
|
if field_name_expr is None:
|
|
return _get_field_instance(ctx, fullnames.FIELD_FULLNAME)
|
|
|
|
field_name = helpers.resolve_string_attribute_value(field_name_expr, ctx, django_context)
|
|
if field_name is None:
|
|
return _get_field_instance(ctx, fullnames.FIELD_FULLNAME)
|
|
|
|
try:
|
|
field = model_cls._meta.get_field(field_name)
|
|
except FieldDoesNotExist as exc:
|
|
ctx.api.fail(exc.args[0], ctx.context)
|
|
return AnyType(TypeOfAny.from_error)
|
|
|
|
field_fullname = helpers.get_class_fullname(field.__class__)
|
|
return _get_field_instance(ctx, field_fullname)
|