How to change the Django admin filter to use a dropdown instead of list?

Question

If, for a field that you want to filter by, you have more than ~10 values, the filtering sidebar starts to be ugly and harder to use.

I\'m looking for a solution to

Answer 1

I cannot comment answers so I'll add to beholderrk's answer here.

1. create a new template called dropdown_filter.html or similar
2. copy the code of filter.html from feincms to dropdown_filter.html

3. create a new filter class in filters.py:

   from django.contrib.admin.filters import AllValuesFieldListFilter
   
   class DropdownFilter(AllValuesFieldListFilter):
       template = 'admin/dropdown_filter.html'
   

4. now you can use this filter in your admin class:

   class SomeAdmin(admin.ModelAdmin):
       # ...
       list_filter = (('country', DropdownFilter),)
   

Works great!