58 lines
1.7 KiB
Python
58 lines
1.7 KiB
Python
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"""
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19. OR lookups
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To perform an OR lookup, or a lookup that combines ANDs and ORs, use the
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``complex`` keyword argument, and pass it an expression of clauses using the
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variable ``django.core.meta.Q``.
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"""
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from django.core import meta
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class Article(meta.Model):
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headline = meta.CharField(maxlength=50)
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pub_date = meta.DateTimeField()
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class META:
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ordering = ('pub_date',)
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def __repr__(self):
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return self.headline
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API_TESTS = """
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>>> from datetime import datetime
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>>> from django.core.meta import Q
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>>> a1 = articles.Article(headline='Hello', pub_date=datetime(2005, 11, 27))
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>>> a1.save()
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>>> a2 = articles.Article(headline='Goodbye', pub_date=datetime(2005, 11, 28))
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>>> a2.save()
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>>> a3 = articles.Article(headline='Hello and goodbye', pub_date=datetime(2005, 11, 29))
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>>> a3.save()
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>>> articles.get_list(complex=(Q(headline__startswith='Hello') | Q(headline__startswith='Goodbye')))
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[Hello, Goodbye, Hello and goodbye]
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>>> articles.get_list(complex=(Q(headline__startswith='Hello') & Q(headline__startswith='Goodbye')))
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[]
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>>> articles.get_list(complex=(Q(headline__startswith='Hello') & Q(headline__contains='bye')))
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[Hello and goodbye]
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>>> articles.get_list(headline__startswith='Hello', complex=Q(headline__contains='bye'))
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[Hello and goodbye]
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>>> articles.get_list(complex=(Q(headline__contains='Hello') | Q(headline__contains='bye')))
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[Hello, Goodbye, Hello and goodbye]
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>>> articles.get_list(complex=(Q(headline__iexact='Hello') | Q(headline__contains='ood')))
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[Hello, Goodbye, Hello and goodbye]
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>>> articles.get_list(complex=(Q(pk=1) | Q(pk=2)))
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[Hello, Goodbye]
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>>> articles.get_list(complex=(Q(pk=1) | Q(pk=2) | Q(pk=3)))
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[Hello, Goodbye, Hello and goodbye]
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"""
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