How can I check the size of a collection within a Django template

Question

I have a list in my Django template   I want to do something only if the size of the list is greater than zero     I have tried myList length and myList length is but they have not been successful   I ve searched all over and don t see any examples  How can I check this

User · Answer

Collection count no bracket         if request user is authenticated      wishlists count      else   0   endif

User · Answer

A list is considered to be False if it has no elements  so you can do something like this      if mylist         lt p gt I have a list  lt  p gt     else         lt p gt I don t have a list  lt  p gt     endif

User · Answer

If you tried myList length and myList length is and its not getting desired results  then you should use myList count

User · Answer

I need the collection length to decide whether I should render table  lt thead gt  lt  thead gt   but don t know why  Django 2 1 7 the chosen answer will fail empty  my forloop afterward   I got to use    if forloop first       endif    to overcome    lt table gt         for record in service list               if forloop first                 lt thead gt               lt tr gt                   lt th gt    lt  th gt               lt  tr gt               lt  thead gt             endif             lt tbody gt           lt tr gt               lt td gt    record date    lt  td gt           lt  tr gt         endfor         lt  tbody gt   lt  table gt

User · Answer

You can try with      if theList object list count  gt  0        blah  blah       else        blah  blah        endif

User · Answer

If you re using a recent Django  changelist 9530 introduced an    empty    block  allowing you to write    for athlete in athlete list             empty      No athletes    endfor     Useful when the something that you want to do involves special treatment for lists that might be empty

User · Answer

See https   docs djangoproject com en stable ref templates builtins  if   just use  to reproduce their example      if athlete list        Number of athletes     athlete list length       else        No athletes     endif

[django] How can I check the size of a collection within a Django template?

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