Ember Compressor Compiler

Purpose

This tool is meant to be used as an extension to django-compressor

It precompiles handlebars.js templates specifically for ember.js

Features

• platform independent
• no need to install node.js packages
• flexible template naming conventions
• inline handlebars in django templates
• 100% test coverage
• PEP 8 compliance
• semver compliance

Installing

Install with pip/easy_install from the pypi

pip install ember-compressor-compiler

or clone the latest source

git clone https://github.com/apmorton/ember-compressor-compiler.git
cd ember-compressor-compiler
python setup.py install

You must also install node.js or PyV8

The latest versions of node.js can be found here

Using

Using this tool is as simple as installing it and adding it to the COMPRESS_PRECOMPILERS django setting

COMPRESS_PRECOMPILERS = (
    ('text/x-handlebars', 'embercompressorcompiler.filter.EmberHandlebarsCompiler'),
)

Then, in your django templates you can embed handlebars templates like so

{% load staticfiles %}
{% load compress %}

{% compress js %}
<script type="text/x-handlebars" src="{% static 'app/templates/application.hbs' %}" ></script>
<script type="text/x-handlebars" data-template-name="index">
    {{outlet}}
</script>
{% endcompress %}

Template Names

Template names are determined in one of two ways

1. the data-template-name attribute on the script tag in your django template
2. the src attribute on the script tag in your django template

When specified, the data-template-name value is used verbatim

If not, the src value is manipulated to give proper template names.

• the file extensions .handlebars and .hbs are removed
• everything before the parent directory templates is removed

<!-- results in template named 'application' -->
<script type="text/x-handlebars" src="{% static 'app/templates/application.hbs' %}" ></script>

<!-- results in template named 'example/index' -->
<script type="text/x-handlebars" src="{% static 'app/templates/example/index.handlebars' %}" ></script>

Advanced Usage

If you need to change the template naming behavior, you can subclass embercompressorcompiler.filter.EmberHandlebarsCompiler

from embercompressorcompiler.filter import EmberHandlebarsCompiler

class MyCompiler(EmberHandlebarsCompiler):
    # override default parent directory
    parent_dir = 'tpls'
    
    # override default extensions
    extensions = ['.tpl']

Then you register your own compiler subclass in COMPRESS_PRECOMPILERS

COMPRESS_PRECOMPILERS = (
    ('text/x-handlebars', 'myapp.MyCompiler'),
)