django order by query set ascending and descending

Question

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

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It works removing  all     Reserved objects filter client client id  order by  -check in

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Ascending order   Reserved objects all   filter client client id  order by  check in    Descending order   Reserved objects all   filter client client id  order by  -check in      -  hyphen  is used to indicate descending order here

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Reserved objects filter client client id  order by  -check in     Notice the - before check in   Django Documentation

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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

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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

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Reserved objects filter client client id  earliest  check in    Or alternatively Reserved objects filter client client id  latest  -check in    Here is the documentations for earliest   and latest

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Adding the - will order it in descending order  You can also set this by adding a default ordering to the meta of your model  This will mean that when you do a query you just do MyModel objects all   and it will come out in the correct order   class MyModel models Model        check in   models DateField        class Meta          ordering     -check in

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You can also use the following instruction   Reserved objects filter client client id  order by  check in   reverse

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This is working for me   latestsetuplist   SetupTemplate objects order by  -creationTime    10    1

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67  Reserved objects filter client client id  order by  -check in     -  is indicates Descending order and for Ascending order just give class attribute

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If for some reason you have null values you can use the F function like this  from django db models import F Reserved objects all   filter client client id  order by F  check in   desc nulls last True   So it will put last the null values  Documentation by Django  https   docs djangoproject com en stable ref models expressions  using-f-to-sort-null-values

[python] django order_by query set, ascending and descending

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