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-rw-r--r--tests/modeltests/custom_methods/__init__.py0
-rw-r--r--tests/modeltests/custom_methods/models.py58
2 files changed, 58 insertions, 0 deletions
diff --git a/tests/modeltests/custom_methods/__init__.py b/tests/modeltests/custom_methods/__init__.py
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+++ b/tests/modeltests/custom_methods/__init__.py
diff --git a/tests/modeltests/custom_methods/models.py b/tests/modeltests/custom_methods/models.py
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+"""
+3. Giving models custom methods and custom managers
+
+Any method you add to a model will be available to instances.
+"""
+
+from django.db import models
+import datetime
+
+class Article(models.Model):
+ headline = models.CharField(maxlength=100)
+ pub_date = models.DateField()
+
+ def __repr__(self):
+ return self.headline
+
+ def was_published_today(self):
+ return self.pub_date == datetime.date.today()
+
+ def get_articles_from_same_day_1(self):
+ return Article.objects.filter(pub_date=self.pub_date).exclude(id=self.id)
+
+ def get_articles_from_same_day_2(self):
+ """
+ Verbose version of get_articles_from_same_day_1, which does a custom
+ database query for the sake of demonstration.
+ """
+ from django.db import connection
+ cursor = connection.cursor()
+ cursor.execute("""
+ SELECT id, headline, pub_date
+ FROM custom_methods_article
+ WHERE pub_date = %s
+ AND id != %s""", [str(self.pub_date), self.id])
+ # The asterisk in "(*row)" tells Python to expand the list into
+ # positional arguments to Article().
+ return [self.__class__(*row) for row in cursor.fetchall()]
+
+API_TESTS = """
+# Create a couple of Articles.
+>>> from datetime import date
+>>> a = Article(id=None, headline='Area man programs in Python', pub_date=date(2005, 7, 27))
+>>> a.save()
+>>> b = Article(id=None, headline='Beatles reunite', pub_date=date(2005, 7, 27))
+>>> b.save()
+
+# Test the custom methods.
+>>> a.was_published_today()
+False
+>>> a.get_articles_from_same_day_1()
+[Beatles reunite]
+>>> a.get_articles_from_same_day_2()
+[Beatles reunite]
+>>> b.get_articles_from_same_day_1()
+[Area man programs in Python]
+>>> b.get_articles_from_same_day_2()
+[Area man programs in Python]
+"""