=================== The staticfiles app =================== .. module:: django.contrib.staticfiles :synopsis: An app for handling static files. ``django.contrib.staticfiles`` collects static files from each of your applications (and any other places you specify) into a single location that can easily be served in production. .. seealso:: For an introduction to the static files app and some usage examples, see :doc:`/howto/static-files`. .. _staticfiles-settings: Settings ======== See :ref:`staticfiles settings ` for details on the following settings: * :setting:`STATIC_ROOT` * :setting:`STATIC_URL` * :setting:`STATICFILES_DIRS` * :setting:`STATICFILES_STORAGE` * :setting:`STATICFILES_FINDERS` Management Commands =================== .. highlight:: console ``django.contrib.staticfiles`` exposes three management commands. collectstatic ------------- .. django-admin:: collectstatic Collects the static files into :setting:`STATIC_ROOT`. Duplicate file names are by default resolved in a similar way to how template resolution works: the file that is first found in one of the specified locations will be used. If you're confused, the :djadmin:`findstatic` command can help show you which files are found. Files are searched by using the :setting:`enabled finders `. The default is to look in all locations defined in :setting:`STATICFILES_DIRS` and in the ``'static'`` directory of apps specified by the :setting:`INSTALLED_APPS` setting. The :djadmin:`collectstatic` management command calls the :meth:`~django.contrib.staticfiles.storage.StaticFilesStorage.post_process` method of the :setting:`STATICFILES_STORAGE` after each run and passes a list of paths that have been found by the management command. It also receives all command line options of :djadmin:`collectstatic`. This is used by the :class:`~django.contrib.staticfiles.storage.CachedStaticFilesStorage` by default. Some commonly used options are: .. django-admin-option:: --noinput Do NOT prompt the user for input of any kind. .. django-admin-option:: -i .. django-admin-option:: --ignore Ignore files or directories matching this glob-style pattern. Use multiple times to ignore more. .. django-admin-option:: -n .. django-admin-option:: --dry-run Do everything except modify the filesystem. .. django-admin-option:: -c .. django-admin-option:: --clear Clear the existing files before trying to copy or link the original file. .. django-admin-option:: -l .. django-admin-option:: --link Create a symbolic link to each file instead of copying. .. django-admin-option:: --no-post-process Don't call the :meth:`~django.contrib.staticfiles.storage.StaticFilesStorage.post_process` method of the configured :setting:`STATICFILES_STORAGE` storage backend. .. django-admin-option:: --no-default-ignore Don't ignore the common private glob-style patterns ``'CVS'``, ``'.*'`` and ``'*~'``. For a full list of options, refer to the commands own help by running:: $ python manage.py collectstatic --help findstatic ---------- .. django-admin:: findstatic Searches for one or more relative paths with the enabled finders. For example:: $ python manage.py findstatic css/base.css admin/js/core.js /home/special.polls.com/core/static/css/base.css /home/polls.com/core/static/css/base.css /home/polls.com/src/django/contrib/admin/media/js/core.js By default, all matching locations are found. To only return the first match for each relative path, use the ``--first`` option:: $ python manage.py findstatic css/base.css --first /home/special.polls.com/core/static/css/base.css This is a debugging aid; it'll show you exactly which static file will be collected for a given path. .. _staticfiles-runserver: runserver --------- .. django-admin:: runserver Overrides the core :djadmin:`runserver` command if the ``staticfiles`` app is :setting:`installed` and adds automatic serving of static files and the following new options. .. django-admin-option:: --nostatic Use the ``--nostatic`` option to disable serving of static files with the :doc:`staticfiles ` app entirely. This option is only available if the :doc:`staticfiles ` app is in your project's :setting:`INSTALLED_APPS` setting. Example usage:: django-admin.py runserver --nostatic .. django-admin-option:: --insecure Use the ``--insecure`` option to force serving of static files with the :doc:`staticfiles ` app even if the :setting:`DEBUG` setting is ``False``. By using this you acknowledge the fact that it's **grossly inefficient** and probably **insecure**. This is only intended for local development, should **never be used in production** and is only available if the :doc:`staticfiles ` app is in your project's :setting:`INSTALLED_APPS` setting. Example usage:: django-admin.py runserver --insecure Storages ======== StaticFilesStorage ------------------ .. class:: storage.StaticFilesStorage A subclass of the :class:`~django.core.files.storage.FileSystemStorage` storage backend that uses the :setting:`STATIC_ROOT` setting as the base file system location and the :setting:`STATIC_URL` setting respectively as the base URL. .. method:: post_process(paths, **options) This method is called by the :djadmin:`collectstatic` management command after each run and gets passed the local storages and paths of found files as a dictionary, as well as the command line options. The :class:`~django.contrib.staticfiles.storage.CachedStaticFilesStorage` uses this behind the scenes to replace the paths with their hashed counterparts and update the cache appropriately. CachedStaticFilesStorage ------------------------ .. class:: storage.CachedStaticFilesStorage A subclass of the :class:`~django.contrib.staticfiles.storage.StaticFilesStorage` storage backend which caches the files it saves by appending the MD5 hash of the file's content to the filename. For example, the file ``css/styles.css`` would also be saved as ``css/styles.55e7cbb9ba48.css``. The purpose of this storage is to keep serving the old files in case some pages still refer to those files, e.g. because they are cached by you or a 3rd party proxy server. Additionally, it's very helpful if you want to apply `far future Expires headers`_ to the deployed files to speed up the load time for subsequent page visits. The storage backend automatically replaces the paths found in the saved files matching other saved files with the path of the cached copy (using the :meth:`~django.contrib.staticfiles.storage.StaticFilesStorage.post_process` method). The regular expressions used to find those paths (``django.contrib.staticfiles.storage.CachedStaticFilesStorage.cached_patterns``) by default cover the `@import`_ rule and `url()`_ statement of `Cascading Style Sheets`_. For example, the ``'css/styles.css'`` file with the content .. code-block:: css+django @import url("../admin/css/base.css"); would be replaced by calling the :meth:`~django.core.files.storage.Storage.url` method of the ``CachedStaticFilesStorage`` storage backend, ultimatively saving a ``'css/styles.55e7cbb9ba48.css'`` file with the following content: .. code-block:: css+django @import url("../admin/css/base.27e20196a850.css"); To enable the ``CachedStaticFilesStorage`` you have to make sure the following requirements are met: * the :setting:`STATICFILES_STORAGE` setting is set to ``'django.contrib.staticfiles.storage.CachedStaticFilesStorage'`` * the :setting:`DEBUG` setting is set to ``False`` * you use the ``staticfiles`` :ttag:`static` template tag to refer to your static files in your templates * you've collected all your static files by using the :djadmin:`collectstatic` management command Since creating the MD5 hash can be a performance burden to your website during runtime, ``staticfiles`` will automatically try to cache the hashed name for each file path using Django's :doc:`caching framework`. If you want to override certain options of the cache backend the storage uses, simply specify a custom entry in the :setting:`CACHES` setting named ``'staticfiles'``. It falls back to using the ``'default'`` cache backend. .. method:: file_hash(name, content=None) .. versionadded:: 1.5 The method that is used when creating the hashed name of a file. Needs to return a hash for the given file name and content. By default it calculates a MD5 hash from the content's chunks as mentioned above. .. _`far future Expires headers`: http://developer.yahoo.com/performance/rules.html#expires .. _`@import`: http://www.w3.org/TR/CSS2/cascade.html#at-import .. _`url()`: http://www.w3.org/TR/CSS2/syndata.html#uri .. _`Cascading Style Sheets`: http://www.w3.org/Style/CSS/ .. currentmodule:: django.contrib.staticfiles.templatetags.staticfiles Template tags ============= static ------ .. templatetag:: staticfiles-static Uses the configured :setting:`STATICFILES_STORAGE` storage to create the full URL for the given relative path, e.g.: .. code-block:: html+django {% load static from staticfiles %} Hi! The previous example is equal to calling the ``url`` method of an instance of :setting:`STATICFILES_STORAGE` with ``"images/hi.jpg"``. This is especially useful when using a non-local storage backend to deploy files as documented in :ref:`staticfiles-from-cdn`. .. versionadded:: 1.5 If you'd like to retrieve a static URL without displaying it, you can use a slightly different call: .. code-block:: html+django {% load static from staticfiles %} {% static "images/hi.jpg" as myphoto %} Hi! Other Helpers ============= There are a few other helpers outside of the :mod:`staticfiles ` app to work with static files: - The :func:`django.core.context_processors.static` context processor which adds :setting:`STATIC_URL` to every template context rendered with :class:`~django.template.RequestContext` contexts. - The builtin template tag :ttag:`static` which takes a path and urljoins it with the static prefix :setting:`STATIC_URL`. - The builtin template tag :ttag:`get_static_prefix` which populates a template variable with the static prefix :setting:`STATIC_URL` to be used as a variable or directly. - The similar template tag :ttag:`get_media_prefix` which works like :ttag:`get_static_prefix` but uses :setting:`MEDIA_URL`. .. _staticfiles-development-view: Static file development view ---------------------------- .. highlight:: python .. function:: django.contrib.staticfiles.views.serve(request, path) This view function serves static files in development. .. warning:: This view will only work if :setting:`DEBUG` is ``True``. That's because this view is **grossly inefficient** and probably **insecure**. This is only intended for local development, and should **never be used in production**. This view is automatically enabled by :djadmin:`runserver` (with a :setting:`DEBUG` setting set to ``True``). To use the view with a different local development server, add the following snippet to the end of your primary URL configuration:: from django.conf import settings if settings.DEBUG: urlpatterns += patterns('django.contrib.staticfiles.views', url(r'^static/(?P.*)$', 'serve'), ) Note, the beginning of the pattern (``r'^static/'``) should be your :setting:`STATIC_URL` setting. Since this is a bit finicky, there's also a helper function that'll do this for you: .. function:: django.contrib.staticfiles.urls.staticfiles_urlpatterns() This will return the proper URL pattern for serving static files to your already defined pattern list. Use it like this:: from django.contrib.staticfiles.urls import staticfiles_urlpatterns # ... the rest of your URLconf here ... urlpatterns += staticfiles_urlpatterns() .. warning:: This helper function will only work if :setting:`DEBUG` is ``True`` and your :setting:`STATIC_URL` setting is neither empty nor a full URL such as ``http://static.example.com/``.