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All snippets written in Python

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Child aware model inheritance

Base models aren't aware of its inherited models, here is a quick solution to access child models from the base model.

  • model
  • inheritance
  • child
  • content-type
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Author: rix
  • 2
  • 4

A form field for valdating PDF and Microsoft Word document

This is form field for PDF or Microsoft Word Document (both .doc and .docx) It will validate the file uploaded as a valid PDF and MS Word Document. It extends a forms.FileField, so you can put all the arguments relevant to FileField. IMPORTANT NOTE: The method of validation is actually run thru *nix OS shell command 'file', therefore, 1. only *nix system can use this class. 2. The file uploaded must be saved on disk, meaning you need to set your upload handler to use TempoaryFileUploadHandler Only. # (i.e. put this in your settings.py) FILE_UPLOAD_HANDLERS = ( "django.core.files.uploadhandler.TemporaryFileUploadHandler", )

  • pdf
  • microsoft-word-document
  • form-field
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Cheap direct_to_tempalte patterns

Django cheap-pages Methods to use when you just want to use the Django dispatcher and there will be no extra business logic in your pages. In some cases flatpages is too flat, and store templates in DB is too much hassle >>> url(^name/$, ... direct_to_template, ... {'template': 'name.html'}, ... name='name') can be expressed as: >>> page('name') urlpatterns = patterns('', ...) urlpatterns += build('Regexp', ['page1', 'page2', ...])

  • generic
  • urlpatterns
  • direct_to_template
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Using another memcached for sessions

This solves the problem of losing sessions data when you restart memcached. So you use a different memcached instance for sessions which you rarely restart. Use the above code and add the following to you settings.py SESSION_ENGINE = "kwippyproject.session_backend" SESSION_CACHE = 'memcached://127.0.0.1:11200/' (Above assumes that your session's memcached is running on port 11200) Feel free to contact me in case you need help. By [Dipankar sarkar](http://dipankar.name) [email protected]

  • django
  • python
  • memcached
  • sessions
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iPernity thumbnail helper

A simple template filter that detects [iPernity](http://www.ipernity.com) static URLs and creates clickable thumbnail for them. Use it with [Lightbox](http://www.huddletogether.com/projects/lightbox2/) or any other funky image overlay script. Your HTML code may contain this: <p>A short example <img src="http://...ipernity..." title="The Description" />.</p> After applying this filter it will become: <p>A short example <a href="http://...large version..." title="The Title"><img alt="The Title" src="http://...thumb version..."/> </a>.</p> Thats all! You may have a look at this: [iPernity and static URLs](http://www.ipernity.com/group/api-users/discuss/20098)

  • template
  • image
  • thumbnail
  • resize
  • ipernity
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Username form field

Use a `UserField` if you want to replace the usual select menu with a simple input field that only accepts valid user names. Should be easy to generalize for other models by passing a query set and the attribute name that represents the instance. Example: class Book(models.Model): owner = models.ForeignKey(User) class BookForm(forms.ModelForm): owner = UserField() class Meta: model = Book

  • user
  • form
  • field
  • username
  • textual
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Author: sma
  • 1
  • 2

Simple E-mail registration

This is a simplified rip-off of django-registration and the built-in forms and views in contrib.auth. It requires no models and is very customizable. Saving the form creates a user with an unusable password and sends a password reset email (by default, uses the password reset template too). You must create templates/registration_form.html and the view registration_complete. I ripped this out of my site, which has a more complicated form, so I may be missing a few other things here.

  • registration
  • email
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Use MEDIA_URL in 500 error page

The default server_error view uses Context instead of RequestContext. If you were depending on a context processor to make MEDIA_URL available in your templates, your 500.html template will not render with the correct image paths. This handler adds MEDIA_URL (and nothing else) back to the context that is sent to the template.

  • media
  • 500
  • handler
  • servererror
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A small script to rearranging the models generated from inspectdb command

`python manage.py inspectdb` allows you to generate the models from a legacy database. The generated model classes are not arranged by dependencies. When the number of tables is big, it becomes really painful to rearrange by hand. This small script should rearrange the models for you. It doesn't solve every problem with generated models, but it makes our the process easier

  • admin
  • inspectdb
  • arrangement
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Rails-like MVC Controllers for Django

[See the blog entry](http://sciyoshi.com/blog/2008/nov/18/rails-mvc-controllers-django/) Allows using controllers for views. This allows for nice subclassing to override behavior of views. `Controller.urls` (see below) works fine for subclasses as well. Similar to [snippet #1165](http://www.djangosnippets.org/snippets/1165/) except that it won't break reverse URL resolving and regex validation in URLs. In `views.py`: import mvc class MyController(mvc.Controller): @mvc.view('myview/$', 'myview') def my_view(self): # do something with self.request return HttpResponse('something') class Meta(mvc.Controller.Meta): url_prefix = 'mycontroller-' In `urls.py`: from . import views urlpatterns = patterns('', # ... other urls here ... *views.MyController.urls(r'prefix/') ) Then the view `MyController.my_view` will be accessible from `'prefix/myview/'` and have the name `'mycontroller-myview'`, i.e. `reverse('mycontroller-myview')` will work as expected.

  • rails
  • controller
  • mvc
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SplitSelectDateTimeWidget

This class extends MultiWidget to create a widget that consists of HTML select elements for Django's forms.DateTimeFields. This results in a select elements with options for month, day, year, hour, minute, second, and (if using the twelve_hr option) meridiem. # Default usage of SplitSelectDateTimeWidget class TimeForm(Form): dt = DateTimeField(widget=SplitSelectDateTimeWidget()) Another example hooks into the flexibility of the underlying Select Widgets: class TimeForm(Form) dt = DateTimeField(widget=SplitSelectDateTimeWidget(hour_step=2, \ minute_step=15, second_step=30, twelve_hr=True, years=[2008,2009,2010])) The above example displays hours in increments of 2, minutes in increments of 15, and seconds in increments of 30. Likewise, only the years 2008, 2009,and 2010 are displayed in the years' options.

  • forms
  • widgets
  • widget
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UKPhoneNumberField

Validates and cleans UK telephone numbers. Number length is checked, and numbers are cleaned into a common format. For example, "+44 (0)1234 567890" will be stored as "01234 567890" Can reject premium numbers (09123 123123) or service numbers (1471, 118 118) with `UKPhoneNumberField(reject=('premium', 'service'))` Uses info from [Wikipedia](http://en.wikipedia.org/wiki/Telephone_numbers_in_the_United_Kingdom)

  • form
  • field
  • uk
  • localflavor
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Basic CouchDB Paginator (Updated)

This is a very basic paginator for CouchDB ViewResults. It's usage is similar to the django one. **CouchPaginator** is almost like the django version with one exception: It's constructor needs an additional argument `pages_view` which is either a reduce result or an integer which holds the total number of objects across all pages. *Example Map/Reduce for pages*: > map = function(doc) { > if(doc.type=="application" || doc.type==\"inquiry\"){ > emit([doc.meta.user.toLowerCase(), doc.type], 1); > } > reduce = function (doc, value, rereduce){ > return sum(value); > } **SimpleCouchPaginator** is much simpler and needs no total number and can only paginate by "next" and "previous" page. Use this if you don't have an reduce view which tells you the amount of total object. An Example setup of CouchDB with django can be found at: [Eric Florenzanos post about django+couchdb](http://www.eflorenzano.com/blog/post/using-couchdb-django/) [See example usage](http://www.djangosnippets.org/snippets/1209/)

  • pagination
  • paginator
  • couchdb
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Example usage of SimpleCouchPaginator

Example Usage of [Very basic CouchDB Paginator](http://www.djangosnippets.org/snippets/1208/) An Example setup of CouchDB with django can be found at: [Eric Florenzanos post about django+couchdb](http://www.eflorenzano.com/blog/post/using-couchdb-django/)

  • pagination
  • paginator
  • couchdb
  • example
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