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Added support to create Generic models #987

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Added support to create Generic models #987

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7663af5
Added support to create Generic models
rschyboll Nov 23, 2021
a6dd2ad
Fixed "typing" has not attribute "_GenericAlias"
rschyboll Nov 24, 2021
f040425
Fixed code style issues
rschyboll Nov 25, 2021
f7fec51
Merge branch 'tortoise:develop' into generic-models
rschyboll Nov 26, 2021
ab60e66
Fixed mypy typing issues
rschyboll Nov 26, 2021
c7d20e8
Merge branch 'generic-models' of https://github.com/Hoodrobinrs/torto…
rschyboll Nov 26, 2021
1b1b653
Added docstring to __class_getitem__ method
rschyboll Jan 20, 2022
d6f2299
Merge branch 'tortoise:develop' into generic-models
rschyboll Mar 1, 2022
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10 changes: 7 additions & 3 deletions tortoise/models.py
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@
Type,
TypeVar,
Union,
Generic,
)

from pypika import Order, Query, Table
Expand Down Expand Up @@ -630,9 +631,6 @@ def __search_for_field_attributes(base: Type, attrs: dict) -> None:
meta.finalise_fields()
return new_class

def __getitem__(cls: Type[MODEL], key: Any) -> QuerySetSingle[MODEL]: # type: ignore
return cls._getbypk(key) # type: ignore


class Model(metaclass=ModelMeta):
"""
Expand Down Expand Up @@ -663,6 +661,12 @@ def __init__(self, **kwargs: Any) -> None:
else:
setattr(self, key, field_object.default)

def __class_getitem__(cls: Type[MODEL], key: Any) -> QuerySetSingle[MODEL]: # type: ignore
if ((isinstance(key, tuple) and inspect.isclass(key[0])) or inspect.isclass(key)) and issubclass(cls, Generic):
return Generic.__class_getitem__.__func__(cls, key)
return cls._getbypk(key)


def _set_kwargs(self, kwargs: dict) -> Set[str]:
meta = self._meta

Expand Down