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All snippets written in Python

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Unzip a .zip file uploaded with FileBrowser

Django Filebrowser (http://code.google.com/p/django-filebrowser/) provides a signal called filebrowser_post_upload. Adding this method to a model that has a FileBrowse field will cause uploaded .zip files to be detected and unzipped on the server in place, then deleted (leaving their folder behind). It will also delete the garbage __MACOSX folder created by Mac zip files. This is probably not safe to do for publicly uploaded files. The use case here was to allow journalists to upload entire SoundSlides projects into a custom CMS.

  • filebrowser
  • zip
  • unzip
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Model Choices Helper

This is my attempt at a convenience class for Django model choices which will use a [Small]IntegerField for storage. It's very similar to [jacobian's version](http://www.djangosnippets.org/snippets/1664/), but I wanted to be able to use simple attributes for access to the integer values. It's not technically dependent on Django, but it's probably not a datatype that would be useful for much else. Feel free to do so however if you have a use-case. >>> statuses = Choices( ... ('live', 'Live'), ... ('draft', 'Draft'), ... ('hidden', 'Not Live'), ... ) >>> statuses.live 0 >>> statuses.hidden 2 >>> statuses.get_choices() ((0, 'Live'), (1, 'Draft'), (2, 'Not Live')) This is then useful for use in a model field with the choices attribute. >>> from django.db import models >>> class Entry(models.Model): ... STATUSES = Choices( ... ('live', 'Live'), ... ('draft', 'Draft'), ... ('hidden', 'Not Live'), ... ) ... status = models.SmallIntegerField(choices=STATUSES.get_choices(), ... default=STATUSES.live) It's also useful later when you need to filter by your choices. >>> live_entries = Entry.objects.filter(status=Entries.STATUSES.live)

  • django
  • models
  • choices
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Updated Filter to resize a ImageField on demand (ver.2)

An update to snippet 1718 (http://www.djangosnippets.org/snippets/1718/). This update lets you pass an image URL string as well as a model ImageField instance. This means that you can then create thumbnails on demand for images outside of model

  • image
  • templatetag
  • thumbnail
  • resize
  • imagefield
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DebugMiddleware footer with links to quick open file/line# in TextMate on local machine

Adds a hidden footer to the bottom of every text/html page containing a list of SQL queries executed, the view function that was used and all templates that were loaded. Each template path is a clickable URL of the type txmt://open/?url=file://FILENAME&line=LINENO as is the view function. This lets you open the file very quickly in TextMate which speeds up development considerably and relieves the mind of much fetching-lookup tedium. This version works on SVN 12002 (1.2 alpha) and earlier. The previous version was: http://www.djangosnippets.org/snippets/1033/ which got caught but some edge case in certain modules. It is based on the original by Simon http://www.djangosnippets.org/snippets/766/ To use save this as 'debug_middleware.py' somewhere on your PYTHONPATH and add 'debug_middleware.DebugFooter' to your MIDDLEWARE_CLASSES setting. - Felix (the Third) hey wouldn't it be great if you could retrieve your password on djangosnippets ? somebody should volunteer to upgrade it

  • middleware
  • debug
  • textmate
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Override QuerySet.delete() (one way of preventing cascading deletes)

We needed to override the default QuerySet delete function to deal with a client problem that we were facing Yes This is monkey-patching, and probably bad practice but if anyone needs to conditionally override the cascading delete that django does at the application level from a queryset, this is how to do it

  • queryset
  • delete
  • monkey-patch
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Improved Multiple Model Files

Most other methods I've seen for splitting an app's models across multiple files involve adding a couple lines to every model. This method factors out those duplicate lines into one place.

  • model-package
  • multiple-model-files
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Prevent form tampering of hidden fields

Sometimes, we need to pass hidden fields with an initial value in forms but cannot trust the returned values because it could have been tampered. So here is a form that adds an additional 'hidden' field (called 'form_hash') that hashes all the initial value of hidden fields and checks for tampering. Pretty straightforward to use.

  • forms
  • hidden
  • tampering
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Request time logging middleware

Middleware class logging request time to stderr. This class can be used to measure time of request processing within Django. It can be also used to log time spent in middleware and in view itself, by putting middleware multiple times in INSTALLED_MIDDLEWARE. Static method `log_message' may be used independently of the middleware itself, outside of it, and even when middleware is not listed in INSTALLED_MIDDLEWARE.

  • middleware
  • debug
  • logging
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Currency formatting filter

See the function **docstring** for usage. This template filter has a couple of drawbacks: * Uses **locale.setlocale** which, according to the [Python docs](http://docs.python.org/library/locale.html#locale.setlocale), is not thread safe. I don't know how this may affect Django applications. * Requires Python 2.5+. Updated 2011-03-16.

  • template
  • filter
  • currency
  • formatting
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