Generic handler for hooking client side javascript error.

class-based, view, generic, js, error, hooking
pip install django-js-error-hook==1.0



To run the demo project for testing:

$ git clone git://
$ cd django-js-error-hook
$ virtualenv env --python=python3
$ source env/bin/activate
(env) $ pip install -e .
(env) $ pip install -e demo
(env) $ demo migrate

Run the server:

(env) $ demo runserver

Then access: http://localhost:8000/ - the JavaScript error will be logged in your console.

To install the project in production:

$ pip install django-js-error-hook

Add django-js-error-hook to your INSTALLED_APPS settings:


If you want to log the error in the console for development:

    'version': 1,
    'disable_existing_loggers': False,
    'filters': {
        'require_debug_false': {
            '()': 'django.utils.log.RequireDebugFalse'
    'formatters': {
        'verbose': {
            'format': '%(levelname)s %(asctime)s %(module)s %(process)d %(thread)d %(message)s'
        'simple': {
            'format': '\033[22;32m%(levelname)s\033[0;0m %(message)s'
    'handlers': {
        'mail_admins': {
            'level': 'ERROR',
            'filters': ['require_debug_false'],
            'class': 'django.utils.log.AdminEmailHandler'
        'console': {
            'level': 'DEBUG',
            'class': 'logging.StreamHandler',
            'formatter': 'simple'
    'loggers': {
        'django.request': {
            'handlers': ['mail_admins'],
            'level': 'ERROR',
            'propagate': True,
        'javascript_error': {
            'handlers': ['mail_admins', 'console'],
            'level': 'ERROR',
            'propagate': True,

By default the logger is called "javascript_error", if you want you can define JAVASCRIPT_ERROR_ID in your settings:

JAVASCRIPT_ERROR_ID = '<your logger name>'

The view will do csrf validation - if for some reason it doesn't work, set JAVASCRIPT_ERROR_CSRF_EXEMPT to True in your settings.

Then install the urls:

urlpatterns = patterns('',
    url(r'^js_error_hook/', include('django_js_error_hook.urls')),

In your template, simply add the js_error_hook script:

<script type="text/javascript">
    window.djangoJSErrorHandlerUrl = "{% url 'js-error-handler' %}"
<script type="text/javascript" src="{% static 'js/django_js_error_hook.js' %}"></script>

Now every JavaScript error will be logged in your logging error stream. (Mail, Sentry, ...)

Have fun and feel free to fork us and give us feedbacks!


When writing for this app you can run tox which will test the project against various versions of Python and Django:

pip install tox tox