This is based on [Snippet 161](/snippets/161/) It marks duplicated SQL queries. To avoid duplicates read: [Caching and Queryset](http://www.djangoproject.com/documentation/db-api/#caching-and-querysets) Sept. 07: Updated for current trunk: 'response' behaves like 'response.header' 22. October '07: Log into directory.
Since the decorators of your views are evaluated during parsing urls.py you have an 'chicken - egg' problem. The method reverse() can't be used since urls.py is not read. This snippets evaluates reverse() lazy. [Related ticket: 5925](http://code.djangoproject.com/ticket/5925) Django 1.4 (current trunk) has a lazy reverse.
This is deprecated. I don't use it anymore, since forms now have the attribute "has_changed". The method form_changed() returns a boolean value. It is True if the submitted values of the bound and valid form are different than the initial values. It works for me. Feedback welcome. Set debug=True if you want to know what's going on.
Deprecated! I use south in all applications with database backend now.
DEPRECATED: Django has cookie based messages since version 1.2 This messages stores messages for the user in a cookie. I prefer this to session based messages, because the session column is a hot spot in the database if one user works with several browser tabs/windows.
The SplitTimeField and the corresponding widget SplitDateTimeWidget show two select boxes with one for hour from 0 to 23 and the other showing minutes 0,15,30 and 45 (can be customized very easily). Usage: ------- class TestForm(forms.Form): start_time = SplitTimeField(widget=SplitTimeWidget) end_time = SplitTimeField(widget=SplitTimeWidget)
When developing a site, I sometimes want to be able to visually reference the HTML before it's given a real context, and a view. This extra bit of code will allow you to add a directory within your templates dir, and pull any html files and subdirectories from it. I added the if statement to automatically use an index.html file if there's no file and extension at the end. You can substitute anything you like for the "html" in "(?P<base>html)". That's just passed as an argument to prepend to the template as a base directory for the templates.
This module provides a middleware that implements a mechanism to highlight a link pointing to the current URL. Every link on the rendered page matching the current URL will be highlighted with a 'current_page' CSS class. The name of the CSS class can be changed by setting `CURRENT_PAGE_CLASS` in the project settings. Originally done by Martin Pieuchot and Bruno Renié, thanks @davidbgk and @samueladam for improvements & optimizations.
Django's transition from oldforms to newforms is nearing. If you're using recent trunk source code from Django's subversion repository, you should start using newforms. But there are still some rough edges as of today. File uploading seems to be one of them. (Adrian and other Django folks are well aware of this. Please don't bother them by asking "Are we there yet?") The Django mailing lists and Google searching didn't turn up any best practices for this area of newforms, so I muddled through it and here's the result. I omit the urls.py code necessary to hook up the zip_upload method to a URL, but otherwise this should be complete. And if I haven't loaded this with enough caveats...please be aware this code may be obsoleted soon.
### Problem: you want to limit posts to a view This can be accomplished with a view decorator that stores hits by IP in memcached, incrementing the cached value and returning 403's when the cached value exceeds a certain threshold for a given IP.
Actually the best way to handle this is to use built-in http://docs.haystacksearch.org/dev/searchqueryset_api.html#load-all I just missed it while checking documentation and wrote this crappy snippet!
This is to be used as a template filter. See [django documentation](http://www.djangoproject.com/documentation/templates_python/#writing-custom-template-filters) for adding custom filters. Example of use: name = "bart simpson" `{{ name|cap }}` will convert 'name' to "Bart Simpson" It works on space-separated names, as well as the following: * converts "mcfly" to "McFly"; * converts "o'neill" to "O'Neill"; * converts "barker-bradley" to "Barker-Bradley"
The above snippet makes all of the settings.py variables accessible in templates. Add this to the context_processors.py file inside your app directory. After that add the below line to the TEMPLATE_CONTEXT_PROCESSORS in your settings.py. '*app_name*.context_processors.access_to_settings'
Sometimes you need to know if a visitor is a bot or if the browser supports certain features or if it is a mobile device. The easiest way to do so would be to lookup the user agent in a capabilities database. Fortunately there is already such a database called browscap.ini which is widely known among PHP users. I found the file accidently on my harddrive because it is also used by Mono: /etc/mono/browscap.ini Read http://browsers.garykeith.com/index.asp for more information. Before importing the module you need to call the script from commandline to retrieve the browscap.ini file. Look at the test function to see how to use it. You can also create a file called "bupdate.ini" which can contain fixes for wrong or incomplete entries, e.g: [Konqueror] javaapplets=True
Rename apache (or any) processes to be easily identified from ps output.