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add an option to return fields on update #1357

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add an option to return fields on update #1357

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13 changes: 11 additions & 2 deletions tortoise/queryset.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1032,6 +1032,7 @@ class UpdateQuery(AwaitableQuery):
"orderings",
"limit",
"values",
"returning_columns",
)

def __init__(
Expand All @@ -1054,6 +1055,7 @@ def __init__(
self.limit = limit
self.orderings = orderings
self.values: List[Any] = []
self.returning_columns = []

def _make_query(self) -> None:
table = self.model._meta.basetable
Expand Down Expand Up @@ -1100,15 +1102,22 @@ def _make_query(self) -> None:
self.query = self.query.set(db_field, executor.parameter(count))
self.values.append(value)
count += 1
if self.returning_columns:
self.query = self.query.returning(*self.return_columns)

def __await__(self) -> Generator[Any, None, int]:
if self._db is None:
self._db = self._choose_db(True) # type: ignore
self._make_query()
return self._execute().__await__()

async def _execute(self) -> int:
return (await self._db.execute_query(str(self.query), self.values))[0]
async def _execute(self) -> List[dict]:
res = await self._db.execute_query_dict(str(self.query))
return res

def returning(self, *columns):
self.return_columns = columns
return self


class DeleteQuery(AwaitableQuery):
Expand Down