mirror of
https://github.com/django/django.git
synced 2025-10-31 09:41:08 +00:00
9541d7a7c7
git-svn-id: http://code.djangoproject.com/svn/django/trunk@1508 bcc190cf-cafb-0310-a4f2-bffc1f526a37
58 lines
1.7 KiB
Python
58 lines
1.7 KiB
Python
"""
|
|
19. OR lookups
|
|
|
|
To perform an OR lookup, or a lookup that combines ANDs and ORs, use the
|
|
``complex`` keyword argument, and pass it an expression of clauses using the
|
|
variable ``django.core.meta.Q``.
|
|
"""
|
|
|
|
from django.core import meta
|
|
|
|
class Article(meta.Model):
|
|
headline = meta.CharField(maxlength=50)
|
|
pub_date = meta.DateTimeField()
|
|
class META:
|
|
ordering = ('pub_date',)
|
|
|
|
def __repr__(self):
|
|
return self.headline
|
|
|
|
API_TESTS = """
|
|
>>> from datetime import datetime
|
|
>>> from django.core.meta import Q
|
|
|
|
>>> a1 = articles.Article(headline='Hello', pub_date=datetime(2005, 11, 27))
|
|
>>> a1.save()
|
|
|
|
>>> a2 = articles.Article(headline='Goodbye', pub_date=datetime(2005, 11, 28))
|
|
>>> a2.save()
|
|
|
|
>>> a3 = articles.Article(headline='Hello and goodbye', pub_date=datetime(2005, 11, 29))
|
|
>>> a3.save()
|
|
|
|
>>> articles.get_list(complex=(Q(headline__startswith='Hello') | Q(headline__startswith='Goodbye')))
|
|
[Hello, Goodbye, Hello and goodbye]
|
|
|
|
>>> articles.get_list(complex=(Q(headline__startswith='Hello') & Q(headline__startswith='Goodbye')))
|
|
[]
|
|
|
|
>>> articles.get_list(complex=(Q(headline__startswith='Hello') & Q(headline__contains='bye')))
|
|
[Hello and goodbye]
|
|
|
|
>>> articles.get_list(headline__startswith='Hello', complex=Q(headline__contains='bye'))
|
|
[Hello and goodbye]
|
|
|
|
>>> articles.get_list(complex=(Q(headline__contains='Hello') | Q(headline__contains='bye')))
|
|
[Hello, Goodbye, Hello and goodbye]
|
|
|
|
>>> articles.get_list(complex=(Q(headline__iexact='Hello') | Q(headline__contains='ood')))
|
|
[Hello, Goodbye, Hello and goodbye]
|
|
|
|
>>> articles.get_list(complex=(Q(pk=1) | Q(pk=2)))
|
|
[Hello, Goodbye]
|
|
|
|
>>> articles.get_list(complex=(Q(pk=1) | Q(pk=2) | Q(pk=3)))
|
|
[Hello, Goodbye, Hello and goodbye]
|
|
|
|
"""
|