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Transparently use webpack with django
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PlatziDev/django-webpack-loader
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Readhttp://owaislone.org/blog/webpack-plus-reactjs-and-django/ for a detailed step by step guide on setting up webpack with django using this library.
Use webpack to generate your static bundles without django's staticfiles or opaque wrappers.
Django webpack loader consumes the output generated bywebpack-bundle-tracker and lets you use the generated bundles in django.
Achangelog is also available.
In order to overcome the lack of support for Markdown on PyPi, building this package can usepandoc along withpypandoc to convert the README.md into a Restructured Text format compatible with PyPI. This requires installingpandoc for your operating system (installation instructions on the pandoc site), andpypandoc which will be installed if you:
pip install -r requirements-dev.txtbefore uploading to PyPI.
If pandoc or pypandoc fails, the README.md file will be uploaded as it was before this enhancement.
Test cases cover Django>=1.6 on Python 2.7 and Python>=3.4. 100% code coverage is the target so we can be sure everything works anytime. It should probably work on older version of django as well but the package does not ship any test cases for them.
npm install --save-dev webpack-bundle-trackerpip install django-webpack-loader
AssumingBASE_DIR in settings refers to the root of your django app.
importsysimportosBASE_DIR=os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
Assumingassets/ is insettings.STATICFILES_DIRS like
STATICFILES_DIRS= (os.path.join(BASE_DIR,'assets'),)
Assuming your webpack config lives at./webpack.config.js and looks like this
varpath=require('path');varwebpack=require('webpack');varBundleTracker=require('webpack-bundle-tracker');module.exports={context:__dirname,entry:'./assets/js/index',output:{path:path.resolve('./assets/webpack_bundles/'),filename:"[name]-[hash].js"},plugins:[newBundleTracker({filename:'./webpack-stats.json'})]}
WEBPACK_LOADER= {'DEFAULT': {'CACHE':notDEBUG,'BUNDLE_DIR_NAME':'webpack_bundles/',# must end with slash'STATS_FILE':os.path.join(BASE_DIR,'webpack-stats.json'),'POLL_INTERVAL':0.1,'TIMEOUT':None,'IGNORE': ['.+\.hot-update.js','.+\.map'] }}
WEBPACK_LOADER= {'DEFAULT': {'CACHE':notDEBUG }}
WhenCACHE is set to True, webpack-loader will read the stats file only once and cache the result. This means web workers need to be restarted in order to pick up any changes made to the stats files.
WEBPACK_LOADER= {'DEFAULT': {'BUNDLE_DIR_NAME':'bundles/'# end with slash }}
BUNDLE_DIR_NAME refers to the dir in which webpack outputs the bundles. It should not be the full path. If./assets is one of your static dirs and webpack generates the bundles in./assets/output/bundles/, thenBUNDLE_DIR_NAME should beoutput/bundles/.
If the bundle generates a file calledmain-cf4b5fab6e00a404e0c7.js and your STATIC_URL is/static/, then the<script> tag will look like this
<scripttype="text/javascript"src="/static/output/bundles/main-cf4b5fab6e00a404e0c7.js"/>
WEBPACK_LOADER= {'DEFAULT': {'STATS_FILE':os.path.join(BASE_DIR,'webpack-stats.json') }}
STATS_FILE is the filesystem path to the file generated bywebpack-bundle-tracker plugin. If you initializewebpack-bundle-tracker plugin like this
newBundleTracker({filename:'./webpack-stats.json'})
and your webpack config is located at/home/src/webpack.config.js, then the value ofSTATS_FILE should be/home/src/webpack-stats.json
IGNORE is a list of regular expressions. If a file generated by webpack matches one of the expressions, the file will not be included in the template.
POLL_INTERVAL is the number of seconds webpack_loader should wait between polling the stats file. The stats file is polled every 100 miliseconds by default and any requests to are blocked while webpack compiles the bundles. You can reduce this if your bundles take shorter to compile.
NOTE: Stats file is not polled when in production (DEBUG=False).
TIMEOUT is the number of seconds webpack_loader should wait for webpack to finish compiling before raising an exception.0,None or leaving the value out of settings disables timeouts.
One of the core principles of django-webpack-loader is to not manage webpack itself in order to give you the flexibility to run webpack the way you want. If you are new to webpack, check one of theexamples, readmy detailed blog post or checkwebpack docs.
Addwebpack_loader toINSTALLED_APPS
INSTALLED_APPS = ( ... 'webpack_loader',){%loadrender_bundlefromwebpack_loader%}{%render_bundle'main'%}
render_bundle will render the proper<script> and<link> tags needed in your template.
render_bundle also takes a second argument which can be a file extension to match. This is useful when you want to render different types for files in separately. For example, to render CSS in head and JS at bottom we can do something like this,
{%loadrender_bundlefromwebpack_loader%}<html> <head>{%render_bundle'main''css'%} </head> <body> ....{%render_bundle'main''js'%} </body></head>
Version 2.0 and up of webpack loader also supports multiple webpack configurations. The following configuration defines 2 webpack stats files in settings and uses theconfig argument in the template tags to influence which stats file to load the bundles from.
WEBPACK_LOADER= {'DEFAULT': {'BUNDLE_DIR_NAME':'bundles/','STATS_FILE':os.path.join(BASE_DIR,'webpack-stats.json'), },'DASHBOARD': {'BUNDLE_DIR_NAME':'dashboard_bundles/','STATS_FILE':os.path.join(BASE_DIR,'webpack-stats-dashboard.json'), }}
{%loadrender_bundlefromwebpack_loader%}<html> <body> ....{%render_bundle'main''js''DEFAULT'%}{%render_bundle'main''js''DASHBOARD'%}<!-- or render all files from a bundle-->{%render_bundle'main'config='DASHBOARD'%}<!-- the following tags do the same thing-->{%render_bundle'main''css''DASHBOARD'%}{%render_bundle'main'extension='css'config='DASHBOARD'%}{%render_bundle'main'config='DASHBOARD'extension='css'%}<!-- add some extra attributes to the tag-->{%render_bundle'main''js''DEFAULT'attrs='async chatset="UTF-8"'%} </body></head>
If you need the URL to an asset without the HTML tags, theget_filestemplate tag can be used. A common use case is specifying the URL to acustom css file for a Javascript plugin.
get_files works exactly likerender_bundle except it returns a list ofmatching files and lets you assign the list to a custom template variable. For example,
{%get_files'editor''css'aseditor_css_files%}CKEDITOR.config.contentsCss = '{{ editor_css_files.0.publicPath }}';<!-- or list down name, path and download url for every file--><ul>{%forcss_fileineditor_css_files%} <li>{{ css_file.name }} : {{ css_file.path }} : {{ css_file.publicPath }}</li>{%endfor%}</ul>
webpack_static template tag provides facilities to load static assets managed by webpackin django templates. It is like django's built instatic tag but for webpack assets instead.
In the below example,logo.png can be any static asset shipped with any npm or bower package.
{%loadwebpack_staticfromwebpack_loader%}<!-- render full public path of logo.png--><imgsrc="{% webpack_static 'logo.png' %}"/>
The public path is based onwebpack.config.jsoutput.publicPath.
If you want to access the webpack asset path information from your application code then you can usethe function in thewebpack_loader.utils module.
>>>utils.get_files('main')[{'url':'/static/bundles/main.js',u'path':u'/home/mike/root/projects/django-webpack-loader/tests/assets/bundles/main.js',u'name':u'main.js'}, {'url':'/static/bundles/styles.css',u'path':u'/home/mike/root/projects/django-webpack-loader/tests/assets/bundles/styles.css',u'name':u'styles.css'}]>>>utils.get_as_tags('main')['<script type="text/javascript" src="/static/bundles/main.js" ></script>','<link type="text/css" href="/static/bundles/styles.css" rel="stylesheet" />']
It is up to you. There are a few ways to handle this. I like to have slightly separate configs for production and local. I tell git to ignore my local stats + bundle file but track the ones for production. Before pushing out newer version to production, I generate a new bundle using production config and commit the new stats file and bundle. I store the stats file and bundles in a directory that is added to theSTATICFILES_DIR. This gives me integration with collectstatic for free. The generated bundles are automatically collected to the target directory and synched to S3.
./webpack_production.config.js
varconfig=require('./webpack.config.js');varBundleTracker=require('webpack-bundle-tracker');config.output.path=require('path').resolve('./assets/dist');config.plugins=[newBundleTracker({filename:'./webpack-stats-prod.json'})]// override any other settings here like using Uglify or other things that make sense for production environments.module.exports=config;
settings.py
ifnotDEBUG:WEBPACK_LOADER.update({'BUNDLE_DIR_NAME':'dist/','STATS_FILE':os.path.join(BASE_DIR,'webpack-stats-prod.json') })
You can also simply generate the bundles on the server before running collectstatic if that works for you.
If you need to output your assets in a jinja template we provide a Jinja2 extension that's compatible with theDjango Jinja module and Django 1.8.
To install the extension add it to the django_jinjaTEMPLATES configuration in the["OPTIONS"]["extension"] list.
TEMPLATES= [ {"BACKEND":"django_jinja.backend.Jinja2","OPTIONS": {"extensions": ["django_jinja.builtins.extensions.DjangoFiltersExtension","webpack_loader.contrib.jinja2ext.WebpackExtension", ], } }]
Then in your base jinja template:
{{ render_bundle('main') }}Enjoy your webpack with django :)
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