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h3/gist:3037571

Created July 3, 2012 03:58
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Get first element of a QuerySet
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gistfile1.py
def getLastDateModification(self):
qs = self.themefile_set.order_by('-date_modified')
# NEVER !!
return qs[0].date_modified
# The most efficient/failsafe way (this will add LIMIT 1 to the query):
rs = list(qs[:1])
return rs and rs[0].date_modified or None
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