Cacheable resources

This snippet provides a template tag that automatically replaces references to any resource you want cached forever with a version of the file that is based on the MD5 sum. For an image, you would use something like: {% load utils %} <img src="{% cacheable "/media/images/logo.png" %}"/> To install it, put a setting in your settings.py file called "DOCUMENT_ROOT", put the python code into a templatetag-friendly file (e.g. app/templatetags/utils.py), load that template tag, then use either a string literal, as above, or a variable name to refer to your resource: <img src="{% cacheable my_media_file %}"/> The cacheable resource will be used when `DEBUG = False`, but in DEBUG mode, the path you give it will be passed back untouched (so you don't have a proliferation of cacheable files as you develop). Django will need write access to the directory you've specified as "DOCUMENT_ROOT" (so it can copy the original file into a forever-cacheable version). You'll also need to set up your webserver to serve files called "MYMD5SUMNAME.cache.(js|css|png|gif|jpg) with an expires header that is far into the future. The goal here is to create a version of your file that will never have to be downloaded again. If you ever change the original file, the MD5 sum will change and the changed file's cacheable name will reflect that. Besides simply changing the name of resources, if the file is a JavaScript or CSS file, and you've specified `MINIFY = True`, the file will be minified using YUI compressor.

• md5
• cacheable
• cacheing

Sun 11 Jul 2010 Read More

Django and jQuery -- pulling info from a long-running process

Another sample of how to integrate Django and jQuery. === This starts a function in views.py that takes a long time to finish. It sets a session variable so that another function can report on the situation. We use jquery and ajax to 'pull' that data from Django so as to provide a progress report. I don't yet know how to background a long-running process, but this is an okay stop-gap method to use. I hope. \d

• ajax
• json
• jquery
• data
• progress
• pull

Sun 11 Jul 2010 Read More

Autogenerate admin classes in admin.py

Tired of adding admin classes to admin.py whenever you add a model? This admin.py automatically keeps itself up-to-date with your models.py file. It assumes if you have a model: MyModel, you want an admin class called AdminMyModel. Regards, Luke Miller

• django
• models
• admin

Sun 11 Jul 2010 Read More

SQL Function Decorator

This decorator will replace a method on a model with a class method that executes SQL in the functions doc string.

• sql
• model
• decorator

Sun 11 Jul 2010 Read More

none if empty list decorator

this avoids checking if POST contains data for forms. see source for usage example

• decorator
• list
• empty
• none

Sun 11 Jul 2010 Read More

get_model_or_404

Attempt to get a model from the `AppCache` and raise `Http404` if it cannot be found.

• shortcut
• model
• db
• helper

Sun 11 Jul 2010 Read More

auto generate admin.py

When you switch you django project from 0.9.6 to 1.0, you can use this script to generate admin.py automatically. You need copy cvt.py to the parent directory of your project(where your project lies) and type "python cvt.py <project> <app>". The admin.py will generated in the <project>/<app>(where it should be!). Enjoy this small work!

• django
• python
• admin-interface

Sun 11 Jul 2010 Read More

render_partial

Works much like an inclusion_tag but allows the template_name to be given as an argument or defaults to partials/MODELNAME.html where MODELNAME is 'got' from the context object you want to render. Its very rough so improvements very welcome! It would be nice to be able to pass new context variables as template tag [keyword] arguments for use in the template to be rendered so you basically have a template tag equivalent for render_to_string... Example usage in a template: {% render_partial post %} or {% render_partial post partials/super_post.html %}

• template
• tag

Sun 11 Jul 2010 Read More

easy admin registration

This essentially wraps [snippet 917](http://www.djangosnippets.org/snippets/917/) (with full credit to author ncw) in a convenience function so that you can type: admin_register(admin, namespace=globals()) or more concisely: admin_register(admin, globals()) at the end of your admin.py file without having to register each model and admin class individually.

• admin
• register

Sun 11 Jul 2010 Read More

lock tables decorator

sometimes,you need to lock one or more table to ensure the integrity of data.may be it's help to you.

• mysql
• lock
• tables

Sun 11 Jul 2010 Read More

Integer Currency Input

This accepts values such as $1,000,000 and stores them to the database as integers. It also re-renders them to the screen using the django.contrib.humanize.intcomma method which takes 1000000 and turns it into 1,000,000. Useful for large currency fields where the decimals aren't really necessary.

• newforms
• currency
• field
• integer
• input

Sun 11 Jul 2010 Read More

render_with decorator

Automatically render your view using render_to_response with the given template name and context, using RequestContext (if you don't know what this is you probably want to be using it). For example: @render_with('books/ledger/index.html') def ledger_index(request): return { 'accounts': ledger.Account.objects.order_by('number'), }

• render_to_response
• requestcontext
• decorator
• rendering

Sun 11 Jul 2010 Read More

Moving items up/down from the admin interface

Move Items up and down from the admin interface. Like phpBB does it with its forums. An additional select field is added to the admin form. After the model has been saved, a model method is called (with the value of the new field), which handles the reordering. A more detailed description and a screenshot can be found [here](http://blog.vicox.net/2008/09/04/ordering-in-django-10/).

• admin
• ordering
• moving
• up/down

Sun 11 Jul 2010 Read More

DebugFooter middleware with textmate links

a minor remix of simon's debug footer: <http://www.djangosnippets.org/snippets/766/> > Adds a hidden footer to the bottom of every text/html page containing a list of SQL queries executed and templates that were loaded (including their full filesystem path to help debug complex template loading scenarios). This version adds TextMate links : if you are working on your local machine and using TextMate you can click on the template paths and they will be opened in TextMate. This speeds up development time considerably ! also, this works with django 1.0 (simon's version got broke by the 'connect' refactor) update: the view function is now linked > To use, drop in to a file called 'debug_middleware.py' on your Python path and add 'debug_middleware.DebugFooter' to your MIDDLEWARE_CLASSES setting.

• middleware
• debug
• textmate

Sun 11 Jul 2010 Read More

Remove quotes from bits in a custom tag

A simple function that will remove the quote marks from every string in a list - if and only if the quote marks are the first and last character of the string, regardless of whether they are single or double quotes. Useful when parsing the arguments of a custom tag.

• quotes
• parse
• custom-tags
• tokens

Sun 11 Jul 2010 Read More