Subclass EmailMultiAlternatives to add CC: option
This class adds a cc: argument to EmailMultiAlternatives.
- cc
Snippet List
Overwriting file storage
Useful if you can make sure your files will never collide unless they share the same contents. You point to the storage parameter when you declare an ImageField and use the hashed_path class method (seemed to make sense to bundle it with the class) to build a custom upload_to method that has to generate the path based on the file contents. Combining both will allow you to deduplicate files uploaded repeatedly.
- file storage
Django Row Level Locking (Prevents race conditions if used correctly)
*WARNING* This is *extremely* slow. This snippet allows you to easily prevent *most* race conditions (if used properly). Feel free to extend on top of this as you like, I'd appreciate any comments to [email protected]
- django
- mysql
- database
- table
- lock
- condition
- race
- locking
- unlock
- atomic
- operation
- operations
FeinCMS inherit region content from translated language
Small hack to inherit region content from the translated object. code should be placed in models.py, where the Page object is created. use feincms version 1.1.2 and above
- feincms inherit region page moodboard language mulit-language translation
Real shuffle function
This function solve the issue of random.shuffle that is based only on randomized shuffling (that's not a real shuffling, because many times items returned aren't shuffled enough). This function make a randomized shuffle and after this loops long the list resorting to avoid two items with a same value in a given attribute. When shuffling is over and there are duplicates, they are leftover to the end (and you can remove them if you set 'remove_duplicates' to True) Run it in a separated file to see it in action.
- shuffle
Filter by first letter inclusion tag
My first snippet ;] It's a simple inclusion tag for filtering a list of objects by a first letter using [django-filter](http://github.com/alex/django-filter) after having this "installed" you can use it in your template like this: {% load my_tags %} <div class="letter_filter"> Filter by first letter: {% letters_filter "MyNiceModel" %} </div> for information how to use django-filter in your view go to [docs](http://github.com/alex/django-filter/blob/master/docs/usage.txt) you should probably cache this inclusion tag since it makes 45 queries to the db (.count() > 0) Enjoy and improve ;] PS. some parts of this code are in Polish
- filter django-filter inclusion tag first-letter
{% ifthis FOO isoneof BAR BAZ ... %}
Probably not thread safe, but good enough for the moment.
- templatetag if
Class Feeds DRY TemplateTag
I'm using the Django Feeds Framework and it's really nice, very intuitive and easy to use. But, I think there is a problem when creating links to feeds in HTML. For example: <link rel="alternate" type="application/rss+xml" title="{{ feed_title }}" href="{{ url_of_feed }}" /> Link's `HREF` attribute can be easily found out, just use `reverse()` But, what about the `TITLE` attribute? Where the template engine should look for this? Even more, what if the feed is build up dinamically and the title depends on parameters (like [this](http://docs.djangoproject.com/en/dev/ref/contrib/syndication/#a-complex-example))? This is the solution I came up with. However, as you can see, there is some caveats: * Requires Django 1.2 Class Feeds, don't know exactly how to do this with the old way of feeds. * If the feed class uses the request object, the `request` [context processor](http://docs.djangoproject.com/en/dev/ref/templates/api/#django-core-context-processors-request) must be configured, since `None` is passed if it isn't present in the context. * There's an oddity with Feed.__get_dynamic_attr(). The Feed subclass instance doesn't have this method; instead, it appears with another name. Don't know how to figure the name out at runtime... I've posted this problem on [StackOverflow](http://stackoverflow.com/questions/2784659/django-dry-feeds), but didn't get a better answer.
- Feeds DRY templatetag HTML LINK
Bitwise operator queryset filter
This snippet for django-1.2 allows you to use bitwise operators without using QuerySet.extra() from django.db.models import * from somewhere import FQ class BitWise(Model): type = CharField(max_length=8) value = IntegerField() def __unicode__(self): return '%s - %d' % (self.type, self.value) >>> BitWise.objects.create(type='django', value=1) <BitWise: django - 1> >>> BitWise.objects.create(type='osso', value=3) <BitWise: osso - 3> >>> BitWise.objects.create(type='osso', value=7) <BitWise: osso - 7> >>> BitWise.objects.filter(FQ(F('value') & 1, 'gt', 0)) [<BitWise: django - 1>, <BitWise: osso - 3>, <BitWise: osso - 7>] >>> BitWise.objects.filter(FQ(F('value') & 2, 'gt', 0)) [<BitWise: osso - 3>, <BitWise: osso - 7>] >>> BitWise.objects.filter(FQ(F('value') & 1, 'gt', 0) & Q(type='django')) [<BitWise: django - 1>]
- filter
- queryset
- bitwise
- operator
Vertical and Horizontal Line to geraldo report
It's fixed the right and bottom for each use. A vertical line is a line with the same right and left, so it fixed the right attribute to be the same value of the left attribute. A horizontal line is a line with the same bottom and top, so it fixed the bottom to be the same value of the top attribute.
- geraldo
- report
strip_tags like php one
Usage: `clean_html = strip_tags(html, {'a': ['href'], 'p': ['class']})` Based on [another snippet](http://www.djangosnippets.org/snippets/205/).
- tags
- html
Quick script to convert json data to csv
I often need to dump data from a database to csv. This little snippet should make it easy enough to do without having to worry too much about character encodings, though it does assume you want your csv file to be utf-8 encoded. Note that this dumps just one table from the database. Trying to dump all the tables in your app will raise an exception.
- json
- csv
- utility
Dojo Helper
This module contains functions and classes that help integrate the Dojo Toolkit javascript library with Django. Supports defining theme, stylesheets, required modules, and addOnLoad functions from Django. Django form fields can be instrumented to be instantiated as Dijit form objects programmatically. Full instructions on [limscoder.com](http://www.limscoder.com/2010/04/django-dojo.html).
- ajax
- javascript
- dojo
datetime.time/datetime.datetime to Unix Epoch (with microsecond support)
This is useful when you need to convert a datetime.datetime.now() or datetime.date.today() into a unix epoch seconds, with microsecond precision (precision only applies to datetime.datetime, as datetime.date won't have any microseconds). I have found this is necessary for when storing the DateTime in the models as a FloatField, in order to keep the usec/microsecond precision. At some point, I will probably create a custom model field called DateTimeWithUSec or something like that, but for now, this will do :)
- datetime
- date
- time
- epoch
- convert
- unix
- usec
- precision
- microsecond
ISBN model field: displays 10- and 13-digit variants and external links
Requires [PyISBN](http://pypi.python.org/pypi/pyisbn/0.5.2). Use like so: class Book(models.Model): title = models.TextField() isbn = ISBNField() ... the link in the widget can be changed to amazon, borders, you name it. If the DB version is a 13-digit ISBN, the display box contains the 10-digit, labeled; and vice-versa.
- django
- model
- python
- widget
- modelfield
- isbn
- books
3110 snippets posted so far.