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author | Florian Apolloner <florian@apolloner.eu> | 2013-02-26 09:53:47 +0100 |
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committer | Florian Apolloner <florian@apolloner.eu> | 2013-02-26 14:36:57 +0100 |
commit | 89f40e36246100df6a11316c31a76712ebc6c501 (patch) | |
tree | 6e65639683ddaf2027908d1ecb1739e0e2ff853b /tests/m2m_intermediary | |
parent | b3d2ccb5bfbaf6e7fe1f98843baaa48c35a70950 (diff) | |
download | django-89f40e36246100df6a11316c31a76712ebc6c501.tar.gz |
Merged regressiontests and modeltests into the test root.
Diffstat (limited to 'tests/m2m_intermediary')
-rw-r--r-- | tests/m2m_intermediary/__init__.py | 0 | ||||
-rw-r--r-- | tests/m2m_intermediary/models.py | 42 | ||||
-rw-r--r-- | tests/m2m_intermediary/tests.py | 41 |
3 files changed, 83 insertions, 0 deletions
diff --git a/tests/m2m_intermediary/__init__.py b/tests/m2m_intermediary/__init__.py new file mode 100644 index 0000000000..e69de29bb2 --- /dev/null +++ b/tests/m2m_intermediary/__init__.py diff --git a/tests/m2m_intermediary/models.py b/tests/m2m_intermediary/models.py new file mode 100644 index 0000000000..e9ae422afb --- /dev/null +++ b/tests/m2m_intermediary/models.py @@ -0,0 +1,42 @@ +""" +9. Many-to-many relationships via an intermediary table + +For many-to-many relationships that need extra fields on the intermediary +table, use an intermediary model. + +In this example, an ``Article`` can have multiple ``Reporter`` objects, and +each ``Article``-``Reporter`` combination (a ``Writer``) has a ``position`` +field, which specifies the ``Reporter``'s position for the given article +(e.g. "Staff writer"). +""" +from __future__ import unicode_literals + +from django.db import models +from django.utils.encoding import python_2_unicode_compatible + + +@python_2_unicode_compatible +class Reporter(models.Model): + first_name = models.CharField(max_length=30) + last_name = models.CharField(max_length=30) + + def __str__(self): + return "%s %s" % (self.first_name, self.last_name) + +@python_2_unicode_compatible +class Article(models.Model): + headline = models.CharField(max_length=100) + pub_date = models.DateField() + + def __str__(self): + return self.headline + +@python_2_unicode_compatible +class Writer(models.Model): + reporter = models.ForeignKey(Reporter) + article = models.ForeignKey(Article) + position = models.CharField(max_length=100) + + def __str__(self): + return '%s (%s)' % (self.reporter, self.position) + diff --git a/tests/m2m_intermediary/tests.py b/tests/m2m_intermediary/tests.py new file mode 100644 index 0000000000..f261f23546 --- /dev/null +++ b/tests/m2m_intermediary/tests.py @@ -0,0 +1,41 @@ +from __future__ import absolute_import + +from datetime import datetime + +from django.test import TestCase +from django.utils import six + +from .models import Reporter, Article, Writer + + +class M2MIntermediaryTests(TestCase): + def test_intermeiary(self): + r1 = Reporter.objects.create(first_name="John", last_name="Smith") + r2 = Reporter.objects.create(first_name="Jane", last_name="Doe") + + a = Article.objects.create( + headline="This is a test", pub_date=datetime(2005, 7, 27) + ) + + w1 = Writer.objects.create(reporter=r1, article=a, position="Main writer") + w2 = Writer.objects.create(reporter=r2, article=a, position="Contributor") + + self.assertQuerysetEqual( + a.writer_set.select_related().order_by("-position"), [ + ("John Smith", "Main writer"), + ("Jane Doe", "Contributor"), + ], + lambda w: (six.text_type(w.reporter), w.position) + ) + self.assertEqual(w1.reporter, r1) + self.assertEqual(w2.reporter, r2) + + self.assertEqual(w1.article, a) + self.assertEqual(w2.article, a) + + self.assertQuerysetEqual( + r1.writer_set.all(), [ + ("John Smith", "Main writer") + ], + lambda w: (six.text_type(w.reporter), w.position) + ) |