Slightly shonky implementation of a custom URL shortening view, as [described on my blog](http://simonwillison.net/2009/Apr/11/revcanonical/). Depends on [baseconv.py](http://www.djangosnippets.org/snippets/1431/)
This allows you to host your own URL shortening service for your site's internal urls. By adding this class as a Mixin to your models, any model with a get_absolute_url method will have a get_short_url method also, which either returns an existing redirect or creates a new one and returns that. **Usage:** Import the class above, add the mixin to your model declaration, and ensure you have declared a get_absolute_url method. `class MyModel = (models.Model, ShortURL):` **Pre-requisites:** You must have the django.contrib.redirects app installed, and you must be using the RedirectFallbackMiddleware as a middleware class. **Settings:** Change the settings in the code above or set them in your settings.py file SHORTURL_CHARS: the characters to use when creating a shorturl SHORTURL_CHAR_NO = the number of characters to use in a shorturl SHORTURL_APPEND_SLASH = whether to append a slash to the end of the shorturl redirect **Notes:** The default settings will give you about 17 million different unique short URLs, reducing the number of characters used to 4 will give you 600,000 or so. That's enough that collisions will be quite rare for sites of a few thousand pages (collisions just result in a urls being generated until an unused combination is found) but if you've got a big site you'll probably want to explore a more robust solution with a proper hash function. [http://matt.geek.nz/blog/text/generating-short-urls-django-site-urls/](http://matt.geek.nz/blog/text/generating-short-urls-django-site-urls/)
Python make url address to Tinyurl in article content like Twitter message
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