ImageFSStorage
A custom FileSystemStorage made for normalizing extensions. It lets PIL look at the file to determine the format and append an always lower-case extension based on the results.
- storage
- images
Snippet List
MODPYTHON Sample Site Logging
This sample site_logging.py module uses the [MODPYTHON Logging snippet](http://www.djangosnippets.org/snippets/627/). It assigns the ApacheLogHandler class to the main logging object, when Django is run inside MODPYTHON. You must have the MODPYTHON Logging snippet, and name it modpython_logging.py for this to work. Apache will write to virtual host-specific logs only with Python 2.5. Users are encouraged to change the two logging settings. Log Level: handler.setLevel(logging.WARNING) Log Format: logging.Formatter(...)
- logging
- mdpython
HTML to text filter
This filter converts HTML to nicely-formatted text using the text-browser W3M. I use this for constructing e-mail bodies, since it means I don't have to have two templates, one HTML and one plain-text, for each detailed e-mail I want to send. Besides the obvious maintenance benefits, this is nice because Django's templating system isn't well-suited to plain-text where whitespace and line-breaks are significant. I chose W3M because it renders tables nicely and can take in HTML from STDIN (which Lynx can't do). An alternative is ELinks; to use it, change "cmd" to the following: `elinks -force-html -stdin -dump -no-home`
- filter
Refactor template files to use {% block %} tags.
Refactors two similar django template files to use `{% block %}` tags. Takes two template files, where one is a modified version of the other, and looks for differences and similiarities between the two. It then generates refactored (and renamed) versions of each file and a third 'base' file, adding an `{% extends %}` tag as appropriate. Block tags are named with matching numbers in all 3 files, making it easy to do a search and replace with more meaningful labels. `sample_data_in_base` controls whether or not the content from file 1 is copied into place in the base file as an example. Problems: it doesn't identify open `{% for %}` or `{% if %}` tags, so this needs some manual fixing (moving the `{% endfor %}` and `{% endif %}` tags into the proper blocks). It doesn't add the correct path for the `{% extends %}` tag either (ie. `"app/base.html"`). `collapse_whitespace` is not working at all.
- template
- refactor
Custom Django manager that excludes subclasses
When you're using Django model inheritance, sometimes you want to be able to get objects of the base class that aren't instances of any of the subclasses. You might expect the obvious way of doing this, `SuperModel.objects.filter(submodel__isnull=True)`, to work, but unfortunately it doesn't. (Neither does `SuperModel.objects.filter(submodel__supermodel_ptr=None)`, or any other convoluted way I could think of doing it.) Here's a nicer approach for doing this. [The blog entry is here.](http://sciyoshi.com/blog/2008/aug/07/custom-django-manager-excludes-subclasses/)
- managers
- models
- model
- subclass
- manager
- inheritance
- subclasses
CustomImageField for Django 1.0 alpha
The venerable CustomImageField, invented by [Scott Barnham](http://scottbarnham.com/blog/2007/07/31/uploading-images-to-a-dynamic-path-with-django/) and rejiggered for newforms-admin by [jamstooks](http://pandemoniumillusion.wordpress.com/2008/08/06/django-imagefield-and-filefield-dynamic-upload-path-in-newforms-admin/#comments). This here is a stab at a [post-Signals-refactor](http://code.djangoproject.com/wiki/BackwardsIncompatibleChanges#Signalrefactoring) version. Seems to do 'er. Note: This should be pointless once [fs-refactor](http://code.djangoproject.com/ticket/5361) lands.
- models
- fields
- imagefield
- newforms-admin
- signals
djangopath: conveniently set sys.path and DJANGO_SETTINGS_MODULE
In the past, whenever I had a script that I wanted to properly configure the settings for, I would use something like the following idiom at the top of the script: import sys, os; dirname = os.path.dirname # sys.path.insert(0, dirname(dirname(__file__))) sys.path.insert(0, dirname(__file__)) os.environ['DJANGO_SETTINGS_MODULE'] = 'myapp.settings' Notice that this is a relative setting to `__file__` variable in the script. The djangopath function is an attempt to do away with the above such that I can now write the following: from lib import djangopath; djangopath(up=2, settings='myapp.settings') This seems to work for me, but it assumes that you are packaging your script inside your projects/apps. If they are elsewhere then you may need to resort to another method (e.g. absolute paths, etc.) AK
- settings
- path
sorl.thumbnail processor: white background
If you want to resize transparent PNGs with the `{% thumbnail %}` templatetag, they'll sometimes get an ugly black background that looks even more ugly on a white background. This processor puts the image on a white background. You can simply change the background color by replacing `white` with any other color. To use this filter simple put the following two lines of code in your settings file: from sorl.thumbnail.defaults import PROCESSORS as THUMBNAIL_PROCESSORS THUMBNAIL_PROCESSORS = ('path.to.white_background',) + THUMBNAIL_PROCESSORS
- png
- background
- sorl.thumbnail
Accessing Environment Variables in Templates
This snippet uses the [django-environment project](http://code.google.com/p/django-environment/). Django-environment is used to provide "environment variables" to django apps.
- django-environment
Accessing Environment Variables in Views
This snippet uses the [django-environment project](http://code.google.com/p/django-environment/). Django-environment is used to provide "environment variables" to django apps.
- django-environment
Pledgie data parser
This one uses - and is very similar to - http://www.djangosnippets.org/snippets/852/ It gets the data from a pledgie.com campaign and parses it.
- pledgie
- donation
- parser
SessionMessages
Creates a message list, but unlike the messaging system in django.contrib.auth it is session-persistent and can therefor be displayed after a redirect.
- messages
- sessionstore
Update All Apps to Latest Revision
This snippet is based on [#844](http://www.djangosnippets.org/snippets/844/ "#844") and [#892](http://www.djangosnippets.org/snippets/892/ "#892") and updates all apps in the current directory using hg, svn, git or bzr. Including subdirectories not under version control (subfolders to keep your stuff organized). For example: python/lib/ django-trunk/ django-0.96/ pydelicious/ (...) django-apps/ django-tagging/ django-pagination/ django-registration/ django-threadedcomments/ django-mptt/ (...) The script will iterate through all of your apps (in the current dir and also recursively in subdirs NOT under version control) and update them to the latest version. To run, simply execute: python update_apps.py in the desired parent folder. Just in case it could be useful: In my case I'm using MAC OS X. I have a folder full of miscellaneous scripts under my HOMEDIR, with this content: /Users/Dedaluz/bin/update_apps.py /Users/Dedaluz/bin/update_apps (this is a bash script) The update_apps script contains simply: #!/bin/bash python /Users/Dedaluz/bin/update_apps.py Then I put this folder in my path, so in my /HOMEDIR/.bash_profile I add this line export PATH=$PATH:$HOME/bin And I just can update from any parent folder just going there and typing: update_apps
- script
- update
- svn
- git
- hg
- bzr
Serializing booleans correctly when doing dumpdata from a MySQL database using Django 0.96
Django 0.96 seems to have a bug when serializing from MySQL. BooleanFields are encoding as 0/1 instead of true/false. Hacking the python serializer seems to fix that. The bug shows up as (fx. when using loaddata on a dump from MySQL in PostgreSQL): Problem installing fixture '/tmp/data.json': ERROR: column "is_staff" is of type boolean but expression is of type integer HINT: You will need to rewrite or cast the expression.
- dumpdata
- 0.96
- seralization
isUnique validator for newforms
This is a generic unique field value validator for use with newforms. ( It's handy to plug into newforms-admin.) Example, with newforms-admin: ` class LinkAdminForm( ModelForm ): def clean_url( self ): return isUnique( self.instance, 'url', self.cleaned_data['url']) class LinkAdmin( ModelAdmin ): form = LinkAdminForm site.register( Link, LinkAdmin ) `
- newforms
- admin
- unique
3110 snippets posted so far.