django-thumbor

A django application to resize images using the thumbor service.

Usage

Both thumbor_url templatetag and the generate_url helper uses the same arguments as libthumbor, you can check the wiki for more info.

On templates:

{% load thumbor_tags %}
<img src="{% thumbor_url '/media/image.jpg' width=300 %}" width="300" />

or

{% load thumbor_tags %}
<img src="{% thumbor_url model.image_field width=300 %}" width="300" />

If you need the result in a template variable, use assign_thumbor_url instead.

{% load thumbor_tags %}
{% assign_thumbor_url '/media/image.jpg' width=300 as thumb_url %}
<img src="{{ thumb_url }}" width="300" />

Filters

Split filters with : (or use a list object):

{% load thumbor_tags %}
<img src="{% thumbor_url url filters='watermark(http://domain.com/watermark.png,-10,-10,20):brightness(10)' %}" />
<img src="{% thumbor_url url filters=filter_list %}" />

On code:

from django_thumbor import generate_url
resized = generate_url("/media/image.jpg", width=300)

Re-using argument sets (aliases)

You can re-use argument sets through globally defined aliases. This prevents repeating thumbnail parameters all over the code and can improve thumbor performance because thumbnails are re-used as well. If you're migrating from django-easy-thumbnails, you'll find the pattern very familiar, and it should make porting much more straight-forward.

On templates:

{% load thumbor_tags %}
<img src="{% thumbor_url '/media/image.jpg' alias='thumb-square' %}" />

On code:

from django_thumbor import generate_url
resized = generate_url("/media/image.jpg", alias="thumb-square")

And in your settings.py:

THUMBOR_ALIASES = {
    'thumb-square': {
        'width': 300,
        'height': 300,
        'filters': ['brightness(10)']}
}

Override server address

There is an extra parameter to specify a custom server to be used instead of settings.THUMBOR_SERVER.

On templates:

{% load thumbor_tags %}
<img src="{% thumbor_url '/media/image.jpg' thumbor_server='http://localhost:8888/foo' width=300 %}" width="300" />

On code:

from django_thumbor import generate_url
custom_server = "http://localhost:8888/foo"
resized = generate_url(
    "/media/image.jpg", thumbor_server=custom_server, width=300)

Installation

pip install django-thumbor

Configuration

Add the app to the INSTALLED_APPS:

INSTALLED_APPS = (
    # ...
    'django_thumbor',
)

Here are the default settings that you can override:

# The host serving the thumbor resized images
THUMBOR_SERVER = 'http://localhost:8888'

# The prefix for the host serving the original images
# This must be a resolvable address to allow thumbor to reach the images
THUMBOR_MEDIA_URL = 'http://localhost:8000/media'

# If you want the static to be handled by django thumbor
# default as False, set True to handle it if you host your statics
THUMBOR_STATIC_ENABLED = False

# The prefix for the host serving the original static images
# this must be a resolvable address to allow thumbor to reach the images
THUMBOR_STATIC_URL = 'http://localhost:8000/static'

# The same security key used in the thumbor service to
# match the URL construction
THUMBOR_SECURITY_KEY = 'MY_SECURE_KEY'

# Default arguments passed to the `generate_url` helper or
# the `thumbor_url` templatetag
THUMBOR_ARGUMENTS = {}

# An alias represents a named set of arguments to the generate_url function
# or thumbor_url template tag. Use it to share general thumbnail
# configurations without repeating yourself.
THUMBOR_ALIASES = {}

Contributing

Install

Fork, clone, create a virtualenv and run:

git clone git://github.com/ricobl/django-thumbor.git
cd django-thumbor
pipenv shell
make install

Test

Add tests on testproject/tests, add code and run:

make test

Test Server

Instal thumbor server: pip install thumbor
Run thumbor: thumbor
Run local server: make run
visit http://127.0.0.1:8000/:

Releasing

Refer to the .pypirc reference for details on setting up API tokens.

Install build to build a package and twine to upload:

make setup_build

Upload to the test server:

make upload_test

If everything goes well, release to the real PyPI server:

make release