Installation and Configuration¶
Getting the latest release¶
The easiest way to get django-filer
is simply install it with pip:
$ pip install django-filer
Optional heic support¶
Currently, django-filer supports upload of heif images (*.heic
, such as
retrieved from iOS devices by airdrop) using an optional dependency:
$ pip install django-filer\[heif\]
Dependencies¶
Django >= 3.2
easy_thumbnails >= 2.0
django-polymorphic >= 3.0
Pillow >=2.3.0 (with JPEG and ZLIB support, PIL may work but is not supported)
django.contrib.staticfiles
is required.
Please make sure you install Pillow with JPEG and ZLIB support installed; for further information on Pillow installation and its binary dependencies, check Pillow doc.
If heif support is chosen, django-filer also installs
pillow-heif
Configuration¶
Add "filer"
and related apps to your project’s INSTALLED_APPS
setting and run manage.py migrate
:
INSTALLED_APPS = [
...
'easy_thumbnails',
'filer',
...
]
Note that easy_thumbnails also has database tables and needs a python manage.py migrate
.
Static media¶
django-filer javascript and css files are managed by django.contrib.staticfiles
;
please see staticfiles documentation to know how to deploy filer static files
in your environment.
Subject location aware cropping¶
It is possible to define the important part of an image (the subject location) in the admin interface for django-filer images. This is very useful when later resizing and cropping images with easy_thumbnails. The image can then be cropped automatically in a way, that the important part of the image is always visible.
To enable automatic subject location aware cropping of images replace
easy_thumbnails.processors.scale_and_crop
with
filer.thumbnail_processors.scale_and_crop_with_subject_location
in the
THUMBNAIL_PROCESSORS
setting:
THUMBNAIL_PROCESSORS = (
'easy_thumbnails.processors.colorspace',
'easy_thumbnails.processors.autocrop',
#'easy_thumbnails.processors.scale_and_crop',
'filer.thumbnail_processors.scale_and_crop_with_subject_location',
'easy_thumbnails.processors.filters',
)
To crop an image and respect the subject location:
{% load thumbnail %}
{% thumbnail obj.img 200x300 crop upscale subject_location=obj.img.subject_location %}
Permissions¶
Warning
File permissions are an experimental feature. The api may change at any time.
See Permissions section.
Secure downloads¶
Warning
File download permissions are an experimental feature. The api may change at any time.
See Secure Downloads section.
Canonical URLs¶
You can configure your project to generate canonical URLs for your public files. Just include django-filer’s
URLConf in your project’s urls.py
:
urlpatterns = [
...
url(r'^filer/', include('filer.urls')),
...
]
Contrary to the file’s actual URL, the canonical URL does not change if you upload a new version of the file. Thus, you can safely share the canonical URL. As long as the file exists, people will be redirected to its latest version.
The canonical URL is displayed in the “advanced” panel on the file’s admin page. It has the form:
/filer/canonical/1442488644/12/
The “filer” part of the URL is configured in the project’s URLconf as described above. The “canonical” part can be
changed with the setting FILER_CANONICAL_URL
, which defaults to 'canonical/'
. Example:
# settings.py
FILER_CANONICAL_URL = 'sharing/'
Debugging and logging¶
While by default django-filer
usually silently skips icon/thumbnail
generation errors, two options are provided to help when working with django-filer
:
FILER_DEBUG
: Boolean, controls whether bubbling up anyeasy-thumbnails
exception (typically if an image file doesn’t exists); isFalse
by default;
FILER_ENABLE_LOGGING
: Boolean, controls whether logging the above exceptions. It requires proper django logging configuration for default logger orfiler
logger. Please see https://docs.djangoproject.com/en/dev/topics/logging/ for further information about Django’s logging configuration.