django-admin-search-field

A per-field search selector for the Django admin changelist.

By default, the Django admin searches the submitted term across every field listed in a ModelAdmin.search_fields (joined with OR). On tables with many fields, several relations, or large row counts, that makes the search slow — and there is no built-in way to search a single field instead.

This package adds a small combobox next to the search box, letting the user restrict the search to one field — or keep "All fields" for the native behaviour.

Features

• Adds a <select> next to the changelist search box with one option per search_fields entry, using a friendly label (verbose_name, following relations, e.g. author__name → "Author › Name").
• Restricts the actual search query to the chosen field via the sf GET parameter (name configurable).
• Works globally, for every registered ModelAdmin, via a single opt-in call — no need to touch each admin.py.
• Also available as an explicit mixin (SearchFieldSelectMixin) if you'd rather opt in per ModelAdmin.
• Defensive by design: any unexpected failure falls back to Django's native search behaviour instead of breaking the admin page.
• Ships a template override (admin/search_form.html) and a small, dependency-free CSS file that follows the admin's own light/dark theme variables.

Installation

pip install django-admin-search-field

Add the app to INSTALLED_APPS, before django.contrib.admin (required so the bundled admin/search_form.html overrides Django's default template via the app_directories template loader):

INSTALLED_APPS = [
    "django_admin_search_field",
    "django.contrib.admin",
    ...
]

Enable the selector once, globally — e.g. from your own app's AppConfig.ready():

# myapp/apps.py
from django.apps import AppConfig


class MyAppConfig(AppConfig):
    name = "myapp"

    def ready(self):
        from django_admin_search_field import install_search_field_selector

        install_search_field_selector()

(Optional) include the bundled CSS in your admin/base_site.html (or wherever you already extend the admin base template):

{% load static %}
<link rel="stylesheet" href="{% static 'django_admin_search_field/css/search_field.css' %}">

That's it — every ModelAdmin with search_fields configured now shows the field selector.

Usage without the global monkey-patch

If you'd rather enable this on a single ModelAdmin, skip install_search_field_selector() and use the mixin instead:

from django.contrib import admin
from django_admin_search_field import SearchFieldSelectMixin

from myapp.models import Book


@admin.register(Book)
class BookAdmin(SearchFieldSelectMixin, admin.ModelAdmin):
    search_fields = ["title", "isbn", "author__name"]

In this mode you're responsible for including the CSS/template yourself, and you don't need to add django_admin_search_field to INSTALLED_APPS — only the Python mixin is used.

Configuration

How it works

• resolve_search_fields() restricts search_fields to the field selected via the sf GET parameter — or returns the original list unchanged when sf is empty ("All fields") or points to a field that isn't configured.
• sf is registered in the changelist's IGNORED_PARAMS, so it's never misread as a list filter (which would otherwise raise IncorrectLookupParameters).
• The template only receives the cl (ChangeList) object, so the combobox data is attached directly to it: cl.search_field_choices, cl.search_field_selected, cl.search_field_var.

Development

pip install -e ".[dev]"
pytest

Compatibility

• Python 3.10+
• Django 4.2+

License

MIT — see LICENSE.