Hello.
Please consider if that proposal can be useful not only for me :)
`QuerySet.first` is quite useful shortcut but its drawback is that it
involves ordering so some DB queries become expensive.
But quite often (and very often while debugging) there's a need just to get
one object that satisfy some filters.
Current `first` implementation to compare with:
def first(self):
"""Return the first object of a query or None if no match is
found."""
for obj in (self if self.ordered else self.order_by('pk'))[:1]:
return obj
Proposal (as an example of implementation):
def one(self):
"""Return one random object of a query or None if no match is
found."""
for obj in self.order_by()[:1]:
return obj
That would be short, simple and wouldn't require any imports in client code.
Thank you.
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