django order_by query set, ascending and descending

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How can I order by descending my query set in django by date?

Reserved.objects.all().filter(client=client_id).order_by('check_in')

I just want to filter from descending all the Reserved by check_in date.

Reserved.objects.filter(client=client_id).order_by('-check_in')

Notice the - before check_in.

Django Documentation

1. How to order a queryset in ascending or descending order , You can use the below-mentioned command for Django order_by query set, ascending and descending:-. How can I order by descending my query set in Django by date? Reserved.objects.all().filter(client=client_id).order_by('check_in') I just want to filter from descending all the Reserved by check_in date.

Reserved.objects.filter(client=client_id).order_by('-check_in')

A hyphen "-" in front of "check_in" indicates descending order. Ascending order is implied.

We don't have to add an all() before filter(). That would still work, but you only need to add all() when you want all objects from the root QuerySet.

More on this here: https://docs.djangoproject.com/en/dev/topics/db/queries/#retrieving-specific-objects-with-filters

django order_by query set, ascending and descending, order_by(order_by) - By default, results returned by a QuerySet are ordered by above will be ordered by pub_date descending, then by headline ascending. Questions: How can I order by descending my query set in django by date? Reserved.objects.all().filter(client=client_id).order_by('check_in') I just want to filter from descending all the Reserved by check_in date.

You can also use the following instruction:

Reserved.objects.filter(client=client_id).order_by('check_in').reverse()

order_by - django - Python documentation, How can I order by descending my query set in django by date? Reserved.​objects.all().filter(client=client_id).order_by('check_in') I just want to filter from  Your queryset consisted of all instances of MyModel ordered by creation_date in ascending order. It is only natural then that latest on this queryset should return the first row of the queryset. This incidentally happens to be the oldest row in the table. One way to get a better understanding is to view the query fired for latest. Case 1:

for ascending order:

Reserved.objects.filter(client=client_id).order_by('check_in')

for descending order:

1.  Reserved.objects.filter(client=client_id).order_by('-check_in')

or

2.  Reserved.objects.filter(client=client_id).order_by('check_in')[::-1]

[SOLVED] django order_by query set, ascending and descending , Entry.objects.order_by(Lower('headline').desc()). If you don't want any ordering to be applied to a query, not even the default ordering, call order_by() with no  Django: ordering numerical value with order_by. Django order_by() not doing proper ordering django order_by query set, ascending and descending.

It works removing .all():

Reserved.objects.filter(client=client_id).order_by('-check_in')

django order_by query set, ascending and descending, How can I order by descending my query set in django by date? Reserved.​objects.all().filter(client=client_id).order_by('check_in'). I just want to  In the Order By window, set the Direction field for the column to Ascending or Descending. Ascending sorts the column from lowest value to the highest value (A to Z, 0 to 9). Descending sorts the column from highest value to the lowest value (Z to A, 9 to 0). Repeat the previous step to sort by additional columns.

QuerySet API reference | Django documentation, JavaScript | Python | Ruby | Java To specify the ordering, wrap the attribute with either r.asc or r.desc (defaults to ascending). (or you've changed the setting of the arrayLimit option for run) you can run order_by without an index: The following query orders posts by date, and if multiple posts were published on the  If you don’t want any ordering to be applied to a query, not even the default ordering, call order_by() with no parameters. You can tell if a query is ordered or not by checking the QuerySet.ordered attribute, which will be True if the QuerySet has been ordered in any way. Each order_by() call will clear any

django order_by query set, ascending and descending , When using QuerySet data, one might want to show a computed value which is not in the database. table = PersonTable(Person.objects.all()) >>> table.​order_by = "name" To prevent this, django-tables2 allows two ways to specify custom ordering: Column() def order_name(self, queryset, is_descending): queryset  This is a tuple or list of strings and/or query expressions. Each string is a field name with an optional “-” prefix, which indicates descending order. Fields without a leading “-” will be ordered ascending. Use the string “?” to order randomly. For example, to order by a pub_date field ascending, use this:

order_by, in order_by(product.-media? ) and the intended column is to be sorted in descending order, the query_set breaks as ascending/descending is tested prior to determining whether a table_prefix exists. Attachments (1)

Comments
  • Cleaner than the accepted answer, no reason to have .all().filter(xxx).
  • You can, but I strongly suspect that it be more efficient to let the SQL server handle the order, at least in theory. It's nice and clear, though.
  • @MichaelScheper yes, that's for sure. Also, .all().filter() is not necessary. .filter() alone is fine.
  • Why would anyone ever want to use the 2nd method?
  • That's one of the available choices. But, better approach is to use 1st method.
  • This is essentially identical to @leonardo-z's answer, is it not?