django-live-templates 0.1a0

Django-Live-Templates is an extension to Django and Channels which adds support for live updating Django template snippets on model changes.

This project is based upon and a partial reimplementation to Channels of SwampDragon-live which was build using SwampDragon with SwampDragon-auth and django-redis.

Installation

Install the latest version from pypi.python.org:

pip install django-live-templates

Install the development version by cloning the source from github.com:

pip install git+https://github.com/mback2k/django-live-templates.git

Configuration

Add the package to your INSTALLED_APPS:

INSTALLED_APPS += (
    'channels',
    'django_live_templates',
)

Example

Make sure to use django-redis as a Cache backend named 'django-live-templates' or 'default':

CACHES = {
    'django-live-templates': {
        'BACKEND': 'django_redis.cache.RedisCache',
        'LOCATION': 'redis://localhost:6379/0',
        'OPTIONS': {
            'CLIENT_CLASS': 'django_redis.client.DefaultClient',
        }
    }
}

Load the required JavaScript template-tags within your Django template:

{% load django_live_template %}

Add the required JavaScript to your Django template:

<script type="text/javascript" src="{{ STATIC_URL }}js/django_live_template.js"></script>

Use the include_live template-tag instead of the default include template-tag, with rows being a Django database QuerySet to listen for added, changed, deleted instances:

{% include_live 'includes/table_body.html' rows=rows perms=perms %}

Use the include_live template-tag instead of the default include template-tag, with row being a single Django database Model instance to listen for changes:

{% include_live 'includes/row_cols.html' row=row perms=perms %}

Use the django_live_template variable within the included template to add the required classes to the root-tag of this template, e.g. the first tag-node:

<tr class="{{ django_live_template }}">...</tr>

You can check if your template is being live rendered by a content pusher by using the context variable is_django_live_template like this:

{% if is_django_live_template %}
<style onload="alert('Hello World!');"></style>
{% endif %}

A real-world example can be found in the Django project WebGCal:

• https://github.com/mback2k/django-webgcal/blob/master/webgcal/apps/webgcal/templates/show_dashboard.html
• https://github.com/mback2k/django-webgcal/tree/master/webgcal/apps/webgcal/templates/includes

License

• Released under MIT License
• Copyright (c) 2015-2019 Marc Hoersken info@marc-hoersken.de