How do you order lists in the same way QuerySets are ordered in Django?
Tag : python , By : Neuromaster
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , Not automatically, but with a bit of work, yes. You need to define a comparator function (or cmp method on the model class) that can compare two model instances according to the relevant attribute. For instance: class Dated(models.Model):
...
created = models.DateTimeField(default=datetime.now)
class Meta:
ordering = ('created',)
def __cmp__(self, other):
try:
return cmp(self.created, other.created)
except AttributeError:
return cmp(self.created, other)
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python sorted and chain - django querysets
Tag : python , By : John Bentley
Date : March 29 2020, 07:55 AM
hop of those help? I have this , How about this getattr() approach: sorter = lambda x: getattr(x, 'article_in_collection', x.article_in_journal).year
def sorter(x):
try:
return x.article_in_collection.year
except AttributeError:
return x.article_in_journal.year
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Django/Python Chain and Sort Querysets
Date : March 29 2020, 07:55 AM
will help you To solve your immediate problem - assuming that's itertools.chain, chain takes multiple iterables. Use chain(*count_items) to expand your list of querysets.
But you can save yourself some trouble by using InventoryDetails.objects.filter(inventory_location__in=inv_locations).order_by('epc').distinct() - that'll do the sorting and uniquing in the database rather than you doing it in your view.
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django querysets order by hour, minute and seconds
Tag : sql , By : SpittingCAML
Date : March 29 2020, 07:55 AM
will be helpful for those in need The best solution would be to use a Func: Tournament.objects.order_by(Func('date', function='"time"')).all()
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Django Concatenate Two Querysets IN ORDER
Date : March 29 2020, 07:55 AM
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