Common useful django template tags and filters

Simply install, add to your INSTALLED_APPS setting and use {% load common_filters common_tags %} in your templates to enable access to the tags and filters

You can get Django Commontags by using pip or easy_install:

$ pip install django-commontags
or
$ easy_install django-commontags

If you want to install it from source, grab the git repository from github and run setup.py:

$ git clone git://github.com/Jaidan/django-commontags.git
$ cd django-commontags
$ python setup.py install

divide

Allows division of two numbers within a template. Accepts a numerator, denominator, and optional format string. Be aware that the format string cannot be a string literal and must be a context variable that contains the format string

dynamic_regroup

Extends the built in regroup tag to allow regrouping by a attribute named by a context variable's value. Accepts an iterable, th vairable to be resolved to an attribute name, and the variable to write the result into.

percentage

Takes a value converts it to a float and returns the result formatted as a percentage. Accepts an integer for number of decimal places.

truncatechars

Takes a string value and truncates it to a given number of chars. Appends "..." to the truncated value. Accepts an integer for the number of characters to truncate to

partition

Break a list into n pieces. The last list may be larger than the rest if the list doesn't break cleanly. That is:

>>> l = range(10)

>>> partition(l, 2)
[[0, 1, 2, 3, 4], [5, 6, 7, 8, 9]]

>>> partition(l, 3)
[[0, 1, 2], [3, 4, 5], [6, 7, 8, 9]]

>>> partition(l, 4)
[[0, 1], [2, 3], [4, 5], [6, 7, 8, 9]]

>>> partition(l, 5)
[[0, 1], [2, 3], [4, 5], [6, 7], [8, 9]]

lookup

Looks up a value from a dictionary. This allows dictionary look ups based on a context variables value. Accepts the name to lookup.

unslugify

Attempts to roughly unslugify a string. Replaces '-' and '_' with ' '