GitHub - vigo/django-admin-list-filter: Dead simple autocompletion for Django admin `list_filter`.

INSTALLED_APPS = [
    "django.contrib.admin",
    "django.contrib.auth",
    "django.contrib.contenttypes",
    "django.contrib.sessions",
    "django.contrib.messages",
    "django.contrib.staticfiles",
    "dalf", # <- add
]

# models.py
import uuid

from django.conf import settings
from django.db import models


class Category(models.Model):
    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
    title = models.CharField(max_length=255)

    def __str__(self):
        return self.title


class Tag(models.Model):
    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
    name = models.CharField(max_length=255)

    def __str__(self):
        return self.name


class Post(models.Model):
    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
    category = models.ForeignKey(to='Category', on_delete=models.CASCADE, related_name='posts')
    author = models.ForeignKey(to=settings.AUTH_USER_MODEL, on_delete=models.CASCADE, related_name='posts')
    title = models.CharField(max_length=255)
    body = models.TextField()
    tags = models.ManyToManyField(to='Tag', blank=True)

    def __str__(self):
        return self.title

# admin.py
from dalf.admin import DALFModelAdmin, DALFRelatedOnlyField, DALFRelatedFieldAjax
from django.contrib import admin
from YOURAPP.models import Post

@admin.register(Post)
class PostAdmin(DALFModelAdmin):
    list_filter = (
        ('author', DALFRelatedOnlyField),    # if author has a post!
        ('category', DALFRelatedFieldAjax),  # enable ajax completion for category field (FK)
        ('tags', DALFRelatedFieldAjax),      # enable ajax completion for tags field (M2M)
    )

# admin.py
from django.contrib import admin
from django.contrib.auth.admin import UserAdmin as BaseUserAdmin
from django.contrib.auth.models import User

from dalf.admin import (
    DALFModelAdmin,
    DALFChoicesField,
    DALFRelatedOnlyField,
    DALFRelatedFieldAjax,
)

from YOURAPP.models import Post, Category, Tag

# must be registered, must have search_fields, required for `author` field demo.
# this is demo purpose only, you can register/import your own/custom User model
class UserAdmin(BaseUserAdmin):
    search_fields = ['username']
    ordering = ['username']

admin.site.unregister(User)
admin.site.register(User, UserAdmin)

@admin.register(Post)
class PostAdmin(DALFModelAdmin):
    list_filter = (
        ('author', DALFChoicesField),        # enable autocomplete w/o ajax (FK)
        ('category', DALFRelatedFieldAjax),  # enable ajax completion for category field (FK)
        ('tags', DALFRelatedOnlyField),      # enable ajax completion for tags field (M2M) if posts has any tag!
    )

# must be registered, must have search_fields
@admin.register(Category)
class CategoryAdmin(admin.ModelAdmin):
    search_fields = ['title',]
    ordering = ['title']


# must be registered, must have search_fields
@admin.register(Tag)
class TagAdmin(admin.ModelAdmin):
    search_fields = ['name',]
    ordering = ['name']

pip install django-timezone-field

# modify models.py, add new ones
# ...

from timezone_field import TimeZoneField                 # <- add this line

class Post(models.Model):
    # all the other fiels
    timezone = TimeZoneField(default=settings.TIME_ZONE) # <- add this line
    
    # rest of the code

# modify admin.py, add new ones

@admin.register(Post)
class PostAdmin(DALFModelAdmin):
    # previous codes
    list_filter = (
        # previous filters
        ('timezone', DALFChoicesField), # <- add this line
    )

pip install -r requirements-dev.txt
pip install -e /path/to/dalf
pre-commit install

pip install build twine
rake -T

rake build           # Build package
rake bump[revision]  # Bump version: major,minor,patch
rake clean           # Remove/Delete build..
rake test            # Run tests
rake upload:main     # Upload package to main distro (release)
rake upload:test     # Upload package to test distro