Login

All snippets written in Python

2957 snippets

Snippet List

Chunks template filter

A simple filter which divides an iterable (list, tupe, string, etc) in chunks, which can then be iterated over separately. A sample of the filter usage is given: a gallery template in which I needed to display images in a table, three images per row, one row for images followed by one row for their descriptions.

  • template
  • filter
  • chunks
  • for
  • iterable
Read More

StrictAuthentication - Auto log-out inactive users

This dead-simple piece of middleware adds a terrific security feature to django authentication. Currently, users who's accounts are de-activated still may have a cookie and a login session. This middleware destroys that session on their next request. Simply add this class into a middleware.py and add it to your settings.

  • middleware
  • authentication
  • security
  • sessions
Read More

RangeField and RangeWidget

These field and widget are util for to those fields where you can put a star and end values. It supports most of field types and widgets (tested with IntegerField, CharField and DateField / TextInput and a customized DateInput). **Example of use:** class FormSearch(forms.Form): q = forms.CharField(max_length=50, label=_('Search for')) price_range = RangeField(forms.IntegerField, required=False) **Example of use (with forced widget):** class FormSearch(forms.Form): q = forms.CharField(max_length=50, label=_('Search for')) price_range = RangeField(forms.IntegerField, widget=MyWidget)

  • forms
  • field
  • widget
  • range
Read More

Chain multiple querysets into one

This class acts as a wrapper around multiple querysets. Use it if you want to chain multiple QSs together without combining them with | or &. eg., to put title matches ahead of body matches: >>> qs1 = Event.objects.filter(## title matches ##) >>> qs2 = Event.objects.filter(## matches in other fields ##) >>> qs = MultiQuerySet(qs1, qs2) >>> len(qs) >>> paginator = Paginator(qs) >>> first_ten = qs[:10] It effectively acts as an immutable, sliceable QuerySet (with only a very limited subset of the QuerySet api)

  • queryset
  • chain
  • multi
Read More

Add URL Segments to Templates

Add this code to you your context_processors.py in your project and then install it in your settings.py TEMPLATE_CONTEXT_PROCESSORS. In your template you can print out a segment of a url by using {{ segment_1 }}. For example if you're on the page "/mysite/section1/section2/" and you used {{ segment_2 }} it would print section1. This idea was taken from Expression Engines URL Segments, http://expressionengine.com/docs/templates/globals/url_segments.html. This comes in handy if you only want to do something in your template if the page your on has a particular segment. FYI, I haven't used this in a production setting yet so it could be buggy still.

  • template
  • url
  • path
  • segment
Read More

resize to thumbnail with scale-to-fill

**So you can upload rectangular pictures but still have square thumbnails.** "Scale to **fill**" instead of the out of the box "scale to **fit**" you get with `Image.thumbnail`

  • image
  • pil
  • thumbnail
  • resize
  • imagefield
Read More

change SITE_ID on fly

Django SITE_ID is a global setting, so the site framework requires you to run multiple instances of Django; at least one for each site. But i want have one instance for multiple sites. This snippet solve this task by change SITE_ID on fly. /sorry my bad english/

  • settings
  • site_id
  • site-contrib
Read More

iPhoneMiddleware

Adds an additional template dir to settings.TEMPLATE_DIRS if the request's HTTP_USER_AGENT string has the word iPhone in it. Allows you to easily create iPhone templates.

  • middleware
  • user-agent
  • iphone
Read More

Django JQuery Autocomplete for Model Selection

This is a general JQuery Autocomplete Form Field for selecting any model instance in your forms. 1 Download jquery.1.2.6 and the jquery autocomplete plugin http://bassistance.de/jquery-plugins/jquery-plugin-autocomplete/, place theme somewhere in your media directory (in this case {{ MEDIA__URL}}/js/ 2 copy fields.py to anywhere in your python-path (in this case utils.fields) 3 create a view for the ajax request that receives a query and returns a key|value list, and register it in your urls.py 4 Just Use the fields in any form like in forms.py

  • selection
  • model
  • jquery
  • autocomplete
Read More

Encryption Fields

This provides some basic cryptographic fields using pyCrypto. All encryption/decription is done transparently and defaults to use AES. Example usage: class DefferredJunk(models.Model): semi_secret = EncryptedCharField(max_length=255)

  • model
  • field
  • encryption
Read More

simple email validation function

This very basic function I was missing in this part of the Django Documentation when creating a custom MultiEmailField: http://docs.djangoproject.com/en/dev/ref/forms/validation/

  • email
  • validation
Read More