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Admin: ordering by multiple fields in a column sort

The new changelist supports clicking on a column header to order by that column, like iTunes. Unlike iTunes, which sorts by track number if you click the Artist or Album column header, it can only order by the column clicked on. By adding a property to my ModelAdmin, and subclassing ChangeList, I was able to make it also sort by track number when sorting by Artist or Album. [Blog post](http://python-web.blogspot.com/2010/07/sorting-by-more-than-one-field-in-admin.html) [Repository with full example](http://github.com/benatkin/tuneage)

  • admin
  • ordering
  • changelist
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Combine ProfileForm an UserForm in one.

Using this method you can combine form for standart django.contrib.auth.models.User model and for your project profile model. As now, ProfileForm can be used as usual, and it will also contain UserForm fields.

  • forms
  • user
  • profile
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Read settings from local_settings.py

Each installation of our Django site has slightly different settings -- namely, which database to use. Developers can provide a `local_settings.py` file which lets them override (or, just as usefully, extend) settings that are in `settings.py`. Subversion is told to ignore `local_settings.py`, so it's never checked in. If `local_settings.py` is missing, the site refuses to work. We include a `local_settings_example.py` file so that new developers can get started more quickly.

  • settings
  • development
  • deployment
  • deploy
  • production
  • local
  • local-settings
  • local-deployment
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Use git log to give your app a revision

Put that stuff in your settings.py Then you can use the git log last date to make that your "revision number" assuming you don't use regular version release numbers. With it you can do something like: <div id="footer"> &copy; My Company &mdash; The Super App (revision {{ GIT_REVISION_DATE }}) </div> See if you like it

  • settings
  • subprocess
  • git
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ImageField for admin with thumbnail

AdminImageWidget is a ImageField Widget for admin that shows a thumbnail. Usage example on a form: class IconForm(forms.ModelForm): icon = forms.ImageField(label='icon', widget=AdminImageWidget)

  • image
  • admin
  • thumbnail
  • imagefield
  • widget
  • imagewidget
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Template tag "ifregex" and "ifnotregex"

Outputs the contents of the block if the second argument matches (or not, depending on the tag) the regular expression represented by the first argument. Usage: {% ifregex "^/comments/" request.path %} ... {% endifregex %} {% ifnotregex "^/comments/" request.path %} ... {% else %} ... {% endifnotregex %}

  • template
  • templatetag
  • regex
  • ifregex
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"an" filter

A template filter which returns "a" or "an" depending on the phonetic value of given text.

  • template-filter
  • grammar
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render_as_template template tag

This is a template tag that works like `{% include %}`, but instead of loading a template from a file, it uses some text from the current context, and renders that as though it were itself a template. This means, amongst other things, that you can use template tags and filters in database fields. For example, instead of: `{{ flatpage.content }}` you could use: `{% render_as_template flatpage.content %}` Then you can use template tags (such as `{% url showprofile user.id %}`) in flat pages, stored in the database. The template is rendered with the current context. Warning - only allow trusted users to edit content that gets rendered with this tag.

  • template
  • tag
  • context
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Signal to post new saved objects to Twitter

Post new saved objects to Twitter. **Example:** from django.db import models class MyModel(models.Model): text = models.CharField(max_length=255) link = models.CharField(max_length=255) def __unicode__(self): return u'%s' % self.text def get_absolute_url(self): return self.link # the following method is optional def get_twitter_message(self): return u'my-custom-twitter-message: %s - %s' % (self.text, self.link) models.signals.post_save.connect(post_to_twitter, sender=MyModel)

  • twitter
  • signal
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Ping All Search Engines

Nothing much to see here. Needed this little puppy for work and figured I and others will need it for other projects. Enjoy!

  • search
  • google
  • all
  • ping
  • engines
  • yahoo
  • live
  • ask
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Clone model mixin

Add this as a superclass of any Django model to allow making copies of instances of that model: class Entry(models.Model, CloneableMixin): [...] e = Entry.objects.get(...) e_clone = e.clone() e_clone.title = 'Cloned Entry' e.save() The new object is saved during the clone process and ManyToMany relations are copied as well.

  • model
  • mixin
  • copy
  • clone
  • clonable
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Multiple Choice model field

Usually you want to store multiple choices as a manytomany link to another table. Sometimes however it is useful to store them in the model itself. This field implements a model field and an accompanying formfield to store multiple choices as a comma-separated list of values, using the normal CHOICES attribute. You'll need to set maxlength long enough to cope with the maximum number of choices, plus a comma for each. The normal get_FOO_display() method returns a comma-delimited string of the expanded values of the selected choices. The formfield takes an optional max_choices parameter to validate a maximum number of choices.

  • multiple
  • model
  • form
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Django Paypal

This is a snippet to use Paypal with python. This modifies Mike Atlas's geocept Paypal library. (Which was not working, for me at least) and adds recurring payments. I would try to write an article explaining how to use this and update the snippet.

  • paypal
  • payments
  • payment-processors
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Enforce site wide login

This is based on a snippet contributed by zbyte64 ( RequireLoginMiddleware) but turned on its head. RequireLoginMiddleware enforces authentication for a subset of urls defined in settings.py. This middleware requires authentication for all urls except those defined in settings.py. The aim is to globally enforce site wide authentication without having to decorate individual views. To use, add the class to MIDDLEWARE_CLASSES and then define the urls you don't need authentication for. These go in a tuple called PUBLIC_URLS in settings.py. For example:- PUBLIC_URLS = ( r'project/application/login/', r'project/application/signup/', ) By default, authentication is not required for any urls served statically by Django. If you want to subject these to the same validation, add an entry to settings.py called SERVE_STATIC_TO_PUBLIC with a value of True.

  • middleware
  • authentication
  • login
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