Unfortunately, Malcolm has shot this down in the past as something that would be included in Django:
http://groups.google.com/group/django-developers/browse_thread/thread/4cc529b95c9efe20/439e90ed09cbcf2e Theoretically, you can do this with a Q object, although I have not tried since Django 1.0 was released. I definitely have a use for this as well, and as can be seen from my original post, every DB engine that Django includes a driver for has support for at very least the & and | operators. gav On Dec 5, 2008, at 8:20 AM, [EMAIL PROTECTED] wrote: > > I would use this. The one thing I don't see covered in your example is > setting flags. I would look at allowing a list or tuple of integers. > Using your example: > > p = Person(name='John Doe', flags=[PeopleFlags.Male, > PeopleFlags.Employed]) > > - Justin > > On Dec 4, 5:16 pm, "Craig Kimerer" <[EMAIL PROTECTED]> wrote: >> Apologies if this has been asked already and I have missed it in >> searching, >> but is there any interest in taking a patch for a BitmaskField? >> >> Given the following (albeit stupid) example to show some usages >> that would >> be nice to have on a bitmask field. I should note in the examples >> below, >> the names I have chosen I am not sold on, but work well enough to >> describe >> what is going on in this example. >> >> class Person(models.Model): >> name = models.TextField() >> flags = models.BitmaskField() >> >> class PeopleFlags(object): >> NoFlag = 0 >> Male = 1 >> Female = 2 >> Student = 4 >> Unemployed = 8 >> Employed = 16 >> >> Example filter API: >> >> Finding all unemployed students: >> Person.objects.filter(flags__all=[PeopleFlags.Unemployed, >> PeopleFlags.Student]) >> >> Finding all females who are students or unemployed >> Person >> .objects >> .filter(flags__is=PeopleFlags.Female).filter(flags__any=[Peop >> leFlags.Student,PeopleFlags.Unemployed]) >> >> Obviously there are some special cases, like you couldn't use the >> same logic >> if someone wanted to find 'All people with NoFlags'. By default 0 >> would >> have to be special cased for '= 0' instead of '& 0'. >> >> I dont have the code currently written, but I am willing to put >> some work >> into it if this is a feature that people (other than me) think >> would be >> useful. >> >> Craig > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Django developers" group. To post to this group, send email to django-developers@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-developers?hl=en -~----------~----~----~----~------~----~------~--~---
