Add the middleware:

MIDDLEWARE = [
    "django.middleware.security.SecurityMiddleware",
    "django.contrib.sessions.middleware.SessionMiddleware",
    "django.middleware.common.CommonMiddleware",
    "django.middleware.csrf.CsrfViewMiddleware",
    "django.contrib.auth.middleware.AuthenticationMiddleware",
    "django.contrib.messages.middleware.MessageMiddleware",
    "django_htmx.middleware.HtmxMiddleware",  # Add this
    ...
]

Core Concepts

Request Detection

The middleware adds request.htmx to detect htmx requests:

from django.shortcuts import render

def my_view(request):
    if request.htmx:
        template_name = "partial.html"
    else:
        template_name = "full.html"
    return render(request, template_name)

HtmxDetails Attributes

The request.htmx object provides these attributes:

request.htmx - Boolean, True if request is from htmx
request.htmx.boosted - True if request is from boosted element (hx-boost)
request.htmx.current_url - Current URL in browser from HX-Current-URL header
request.htmx.current_url_abs_path - Absolute path form of current_url
request.htmx.history_restore_request - True if request is for history restoration
request.htmx.target - Target element ID from HX-Target header
request.htmx.trigger - Trigger element ID from HX-Trigger header
request.htmx.trigger_name - Trigger element name from HX-Trigger-Name header
request.htmx.prompt - User response to hx-prompt attribute
request.htmx.triggering_event - Deserialized JSON from event-header extension

Template Tags

Load and use in templates:

{% load django_htmx %}
<!DOCTYPE html>
<html>
<head>
    {% htmx_script %}
</head>
<body hx-headers='{"x-csrftoken": "{{ csrf_token }}"}'>
    ...
</body>
</html>

Django Templates

{% load django_htmx %}
<!doctype html>
<html>
  <head>
    {% htmx_script %}
  </head>
  <body hx-headers='{"x-csrftoken": "{{ csrf_token }}"}'>
    ...
  </body>
</html>

Use minified=False for debugging:

{% htmx_script minified=False %}

Jinja2

from jinja2 import Environment
from django_htmx.jinja import htmx_script

def environment(**options):
    env = Environment(**options)
    env.globals.update({"htmx_script": htmx_script})
    return env

{{ htmx_script() }}

HTTP Response Classes

HttpResponseClientRedirect

Triggers a client-side redirect (HX-Redirect header):

from django_htmx.http import HttpResponseClientRedirect

def sensitive_view(request):
    if not sudo_mode.active(request):
        next_url = request.htmx.current_url_abs_path or ""
        return HttpResponseClientRedirect(f"/activate-sudo/?next={next_url}")
    ...

HttpResponseClientRefresh

Triggers a page reload (HX-Refresh header):

from django_htmx.http import HttpResponseClientRefresh

def partial_table_view(request):
    if page_outdated(request):
        return HttpResponseClientRefresh()
    ...

HttpResponseLocation

Makes htmx do a client-side "boosted" request (HX-Location header):

from django_htmx.http import HttpResponseLocation

def wait_for_completion(request, action_id):
    ...
    if action.completed:
        return HttpResponseLocation(f"/action/{action.id}/completed/")
    ...

HttpResponseStopPolling

Stops polling when using hx-trigger="every":

from django_htmx.http import HttpResponseStopPolling

def my_pollable_view(request):
    if event_finished():
        return HttpResponseStopPolling()
    ...

Or use the constant directly:

from django_htmx.http import HTMX_STOP_POLLING
from django.shortcuts import render

def my_pollable_view(request):
    if event_finished():
        return render(request, "event-finished.html", status=HTMX_STOP_POLLING)
    ...

Response Modifying Functions

push_url

Push a new URL to the browser history:

from django_htmx.http import push_url

def leaf(request, leaf_id):
    ...
    if leaf is None:
        response = branch(request, branch=leaf.branch)
        return push_url(response, f"/branch/{leaf.branch.id}")
    ...

replace_url

Replace the current URL in browser history:

from django_htmx.http import replace_url

def dashboard(request):
    ...
    response = render(request, "dashboard.html", ...)
    return replace_url(response, "/dashboard/")

reswap

Override the swap method:

from django.shortcuts import render
from django_htmx.http import reswap

def employee_table_row(request):
    ...
    response = render(...)
    if employee.is_boss:
        reswap(response, "afterbegin")
    return response

retarget

Override the target element:

from django.shortcuts import render
from django.views.decorators.http import require_POST
from django_htmx.http import retarget

@require_POST
def add_widget(request):
    ...
    if form.is_valid():
        response = render(request, "widget-table.html", ...)
        return retarget(response, "#widgets")
    return render(request, "widget-table-row.html", ...)

reselect

Override the content selection:

from django_htmx.http import reselect

def update_table(request):
    response = render(request, "table.html", ...)
    return reselect(response, "tbody")

trigger_client_event

Trigger client-side events:

from django.shortcuts import render
from django_htmx.http import trigger_client_event

def end_of_long_process(request):
    response = render(request, "end-of-long-process.html")
    return trigger_client_event(
        response,
        "showConfetti",
        {"colours": ["purple", "red", "pink"]},
        after="swap",  # "receive", "settle", or "swap"
    )

Best Practices

Partial Rendering

Use django-template-partials for efficient partial rendering:

pip install django-template-partials

{% extends "_base.html" %}
{% load partials %}

{% block main %}
  {% partialdef country-table inline %}
    <table id="country-data">
      ...
    </table>
  {% endpartialdef %}
{% endblock main %}

In views:

def country_listing(request):
    template_name = "countries.html"
    if request.htmx:
        template_name += "#country-table"

    countries = Country.objects.all()
    return render(request, template_name, {"countries": countries})

Swapping Base Template

def partial_rendering(request):
    if request.htmx:
        base_template = "_partial.html"
    else:
        base_template = "_base.html"

    return render(request, "page.html", {"base_template": base_template})

{% extends base_template %}
{% block main %}
  ...
{% endblock %}

CSRF Protection

Always include CSRF token in htmx requests:

<body hx-headers='{"x-csrftoken": "{{ csrf_token }}"}'>

Caching with HTMX

Add appropriate Vary headers for cacheable responses:

from django.shortcuts import render
from django.views.decorators.cache import cache_control
from django.views.decorators.vary import vary_on_headers

@cache_control(max_age=300)
@vary_on_headers("HX-Request")
def my_view(request):
    if request.htmx:
        template_name = "partial.html"
    else:
        template_name = "complete.html"
    return render(request, template_name, ...)

HTMX Extensions

Download extensions locally (avoid CDNs):

curl -L https://unpkg.com/htmx-ext-ws/dist/ws.min.js -o static/htmx-ext-ws.min.js

{% load django_htmx static %}
<!doctype html>
<html>
  <head>
    {% htmx_script %}
    <script src="{% static 'htmx-ext-ws.min.js' %}" defer></script>
  </head>
  ...
</html>

Type Checking

For type-checking, extend HttpRequest:

from django.http import HttpRequest as HttpRequestBase
from django_htmx.middleware import HtmxDetails

class HttpRequest(HttpRequestBase):
    htmx: HtmxDetails

References

Official Documentation: https://django-htmx.readthedocs.io/
GitHub Repository: https://github.com/adamchainz/django-htmx
htmx Reference: https://htmx.org/reference/

django-htmx

Django HTMX

Installation