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DRY with common model fields

If you have many models that all share the same fields, this might be an option. Please note that order matters: Your model need to inherit from TimestampedModelBase first, and models.Model second. The fields are added directly to each model, e.g. while they will be duplicated on the database level, you only have to define them once in your python code. Not sure if there is a way to automate the call to TimestampedModelInit(). Tested with trunk rev. 5699. There is probably a slight chance that future revisions might break this.

  • models
  • model
  • inheritance
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Decorating urlpatterns

One thing I wanted for a while was the ability to basically apply something like @login_required to a bunch of urlpatterns in one go, instead of having to decorate each and every view manually. In this example, the latter two views will always raise a 404.

  • urls
  • views
  • decorators
  • urlpatterns
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newforms self-contained login form

A simple login form that does the actual authentification itself. **Usage:** if request.method == "POST": loginform = LoginForm(request.POST) if loginform.login(): return HttpResponseRedirect(redir_url) else: loginform = LoginForm()

  • newforms
  • login
  • auth
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Extended rails flash implementation

This is an extendend version of the Rails Flash implementation by Sean Patrick Hogan that supports different message types. **Setting a flash message:** request.flash.error = 'Item could not be saved' request.flash['error'] = 'Item could not be saved' request.flash['foo'] = 'bar' **Displaying a flash in the view:** <!-- show the error message --> {% if flash.error %}An error occured:{{ flash.error }}{% endif %} <!-- just show the first message found --> {% if flash %}An error occured:{{ flash }}{% endif %} <!-- show all messages --> {% for msg in flash %}{{ msg.type }}: {{ msg.msg }}{% endfor %} Note that it still works with simple strings as well. Feel free to just use it like this: request.flash = "Message" And: {% if flash %}{{ flash }}{% endif %} However, be aware that once you did this, you destroyed the Flash() dict and thus lost the extended functionality. You can use request.flash.clear() to remove all messages.

  • flash
  • messages
  • rails
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FieldStack - easy form template rendering

FieldStack simplifies forms template rendering. This is enhanced version of snippet [1786](http://djangosnippets.org/snippets/1786/)

  • template
  • fields
  • forms
  • templates
  • fieldset
  • form
  • object
  • field
  • lazy
  • fieldsets
  • groups
  • stacked
  • descriptor
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TextField

Alex Gaynor presented this idiom at EuroDjangoCon 2009.

  • forms
  • textfield
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sort_by_id_sequence

I needed to sort a set of objects (a QuerySet for example) by an externally provided list of IDs - for example: >>> writers = Writer.objects.all() >>> sort_by_id_sequence(writers, [3, 1, 2]) [<Writer id: 3>, <Writer id: 1>, <Writer id: 2>]

  • sorting
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DebugFooter middleware

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). 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.

  • sql
  • middleware
  • debugging
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Date/time util template filters

**Explanations:** - the series "is_*_of" was created 'cos it's easier write: `{% if 10|is_day_of:date and user %}` than write: `{% ifequal date.day 10 %}{% if user %}...` - the series "inc/dec" is not complete, but can the extended to day, hour, minute, etc as you needs. It's util to inc 10 months since 05/31/2006 by example and get a 2007's date :) **Setup:** Insert the snippet into an_app/templatetags/datetimeutils.py. **Use in template:** `{% load datetimeutils %}` and use filters as following: - `{{ 30|is_day_of:a_date_time_variable }}` - `{{ 11|is_month_of:a_date_time_variable }}` - `{{ 2006|is_year_of:a_date_time_variable }}` - `{{ 58|is_minute_of:a_date_time_variable }}` - `{{ 23|is_hour_of:a_date_time_variable }}` - `{{ a_date_time_variable|dec_year:2 }}` - `{{ a_date_time_variable|dec_month:2 }}` - `{{ a_date_time_variable|inc_year:2 }}` - `{{ a_date_time_variable|inc_month:2 }}`

  • date
  • time
  • template-filters
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Template filters utils

**Explanation:** That template filters is util for combine boolean-return conditions using template tag `{% if %}`. **Setup:** Insert the snippet into an_app/templatetags/myutils.py. **Use in template:** {% load myutils %} and use filters as following: - `{% if 10|is_multiple_of:5 %}` - `{% if 10|in_list:a_list_variable %}` - `{% if user.username|is_equal:a_variable %}` - `{% if user.username|is_not_equal:a_variable %}` - `{% if a_variable_|is_lt:5 %}` - `{% if a_variable_|is_lte:5 %}` - `{% if a_variable_|is_gt:5 %}` - `{% if a_variable_|is_gte:5 %}`

  • template-filters
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