async def last(self, field="id"):
expr = self.build_select_expression()
key = getattr(self.table.c, field)
expr = expr.order_by(key.desc())
row = await self.database.fetch_one(expr)
if not row:
raise NoMatch()
return self.model_cls.from_row(row,
select_related=self._select_related)
async def get(self, **kwargs):
if kwargs:
return await self.filter(**kwargs).get()
expr = self.build_select_expression().limit(2)
rows = await self.database.fetch_all(expr)
if not rows:
raise NoMatch()
if len(rows) > 1:
raise MultipleMatches()
return self.model_cls(dict(rows[0]))