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

Could you please give a complete example. it shows like before. here is my code

from django.contrib import admin
from pages.models import Post, Device, DeviceType, DeviceModel, Ipaddress, DeviceGroup, Location,Department,Comment
from django_admin_listfilter_dropdown.filters import DropdownFilter, RelatedDropdownFilter


class CommentInline(admin.TabularInline):
    model = Comment

class IpaddressAdmin(admin.ModelAdmin):
        prepopulated_fields = {'slug': ('ipaddress',)}
#        model=Ipaddress

        search_fields = ['ipaddress', ]
#     
        list_display = ('ipaddress', 'machinename', 'user', 'department','location',)
        list_filter = (
        ('user', DropdownFilter),
        ('department', RelatedDropdownFilter),
        ('location', RelatedDropdownFilter),

    )

Here is the screenshot