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django-metaimage-0.4
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مشاهده بیشترتوضیحات
Wrapper around django-photologue dealing w/ remote images, and server-side-generated images.
| ویژگی | مقدار |
|---|---|
| سیستم عامل | - |
| نام فایل | django-metaimage-0.4 |
| نام | django-metaimage |
| نسخه کتابخانه | 0.4 |
| نگهدارنده | [] |
| ایمیل نگهدارنده | [] |
| نویسنده | Kai Wu |
| ایمیل نویسنده | k@limist.com |
| آدرس صفحه اصلی | https://github.com/limist/django-metaimage |
| آدرس اینترنتی | https://pypi.org/project/django-metaimage/ |
| مجوز | GPLv3 |
Overview
========
django-metaimage is a GPL-licensed app for the Django web framework.
Many sites deal with images/photos, which usually come from three
sources: uploaded by a user, pulled from the Internet via a URL, or
generated server-side. For the latter two cases, django-metaimage
should be helpful: a new instance can take either a remote image URL,
or raw image data as a string (e.g. as might be produced via
Matplotlib).
The main MetaImage model provides a wrapper of useful functionality
around ImageModel from the powerful django-photologue app (a
dependency). Some of the django-metaimage code was initially inspired
from Pinax's photo app, but I have removed Pinax dependencies, so that
django-metaimage only requires:
1. Django
2. django-photologue
3. django-autoslug
4. django-taggit
5. django-uni-form, trunk (optional)
You might need django-uni-form, if you want to use the included
example templates, and want to see all django-metaimage's tests pass.
In sum, this app is provides more flexibility with local
representation of images on your site from multiple sources, whether
uploaded, from remote images, or sever-side generated images.
Usage
-----
The main class, MetaImage, enables storing useful metadata about
images, including a title, caption, notes about the source
(e.g. copyrights, permissions), and tags. MetaImage attributes
include:
- title, slug, caption, source_note (for attribution text, copyrights, etc.)
- source_url (if any)
- privacy
- safetylevel
- tags
Now, to handle the two cases of storing images that the app was made
for: retrieval of a remote image from its URL (you'll have a local
copy in case the image moves/disappears), or storing a server-side
generated image:
- With a remote image, simply specify the source_url field in the new
MetaImage instance and save it, e.g.
::
new_metaimage = MetaImage(
title='Django logo',
source_url='http://media.djangoproject.com/img/site/hdr_logo.gif',
source_note='The logo of the Django project.',
creator=foo_user)
new_metaimage.save() # Will download, save source_url locally.
- With a server-side generated image - as a string object - one would
send in the keyword argument image_data when saving, e.g.
::
new_metaimage = MetaImage(
title='Chart of f(x)',
source_note='Chart of f(x) generated by Matplotlib.',
creator=foo_user)
new_metaimage.save(image_data=a_png_as_str)
Useful MetaImage methods include:
- render() and render_linked(), which spits out the HTML to show your
image on a webpage, with a hyperlink to a details-page.
Basic views, tests, and templates are also provided, so you can
quickly integrate the app into an existing Django site.
Installation
------------
Install via "pip install django-metaimage" or from source. You may
also need to do pip install for django-taggit, django-autoslug, and
photologue.
Then update your Django project's settings.py file: add "photologue",
"taggit" and "metaimage" (autoslug does not need to be there) in the
INSTALLED_APPS list, e.g.
::
INSTALLED_APPS = [
...
"photologue",
"taggit",
"metaimage",
...
]
And then, do a "manage.py syncdb" to create the database tables
needed.
OPTIONAL: Templates are provided for adding, editing, viewing, etc. of
metaimages; they're very basic and meant only as a starting point.
But if you want to use them directly, do at least these two things:
1. Get and install django-uni-form > 0.7.0 which some of the templates
rely on, and also update your setting.py INSTALLED_APPS to list
"uni_form" as a package dependency.
2. Update your site-wide urls.py, e.g.
::
urlpatterns = patterns("",
...
(r"^metaimage/", include("metaimage.urls")),
...
)
Also, many of the django-metaimage templates have templatetags
dependencies that are commented out, as they require Pinax or other
packages; you can activate them as needed, but be sure to update your
INSTALLED_APPS accordingly.
Testing
-------
I've included a set of unit tests for the app; if you have integrated
django-metaimage into an existing Django site/project, just do the
usual "manage.py test" and the tests should be run, BUT for all tests
to pass, the current trunk (as of 2/2011) of django-uni-form is
needed:
https://github.com/pydanny/django-uni-form
Should you want to run django-metaimage's test suite outside of any
particular Django site/project - i.e. stand-alone Django app testing -
I suggest installing and using the django-app-test-runner and my fork
of it at:
https://github.com/limist/django-app-test-runner
...which enables usage of a testing-specific settings file. After you
install django-app-test-runner in your virtualenv (don't develop in
Python without it!) you should be able to do something like:
::
cd to/where/django-metaimage/code/is
app-test-runner ./src/metaimage/ -s src/metaimage/testsettings.py
Note that you'll need Internet connectivity for the tests to pass.
Errors, etc.
------------
Please log errors/issues using django-metaimage's github site,
http://github.com/limist/django-metaimage/issues
نحوه نصب
نصب پکیج whl django-metaimage-0.4:
pip install django-metaimage-0.4.whl
نصب پکیج tar.gz django-metaimage-0.4:
pip install django-metaimage-0.4.tar.gz