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-rw-r--r--tests/modeltests/update/__init__.py0
-rw-r--r--tests/modeltests/update/models.py67
2 files changed, 67 insertions, 0 deletions
diff --git a/tests/modeltests/update/__init__.py b/tests/modeltests/update/__init__.py
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index 0000000000..e69de29bb2
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+++ b/tests/modeltests/update/__init__.py
diff --git a/tests/modeltests/update/models.py b/tests/modeltests/update/models.py
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+++ b/tests/modeltests/update/models.py
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+"""
+Tests for the update() queryset method that allows in-place, multi-object
+updates.
+"""
+
+from django.db import models
+
+class DataPoint(models.Model):
+ name = models.CharField(max_length=20)
+ value = models.CharField(max_length=20)
+ another_value = models.CharField(max_length=20, blank=True)
+
+ def __unicode__(self):
+ return unicode(self.name)
+
+class RelatedPoint(models.Model):
+ name = models.CharField(max_length=20)
+ data = models.ForeignKey(DataPoint)
+
+ def __unicode__(self):
+ return unicode(self.name)
+
+
+__test__ = {'API_TESTS': """
+>>> DataPoint(name="d0", value="apple").save()
+>>> DataPoint(name="d2", value="banana").save()
+>>> d3 = DataPoint(name="d3", value="banana")
+>>> d3.save()
+>>> RelatedPoint(name="r1", data=d3).save()
+
+Objects are updated by first filtering the candidates into a queryset and then
+calling the update() method. It executes immediately and returns nothing.
+
+>>> DataPoint.objects.filter(value="apple").update(name="d1")
+>>> DataPoint.objects.filter(value="apple")
+[<DataPoint: d1>]
+
+We can update multiple objects at once.
+
+>>> DataPoint.objects.filter(value="banana").update(value="pineapple")
+>>> DataPoint.objects.get(name="d2").value
+u'pineapple'
+
+Foreign key fields can also be updated, although you can only update the object
+referred to, not anything inside the related object.
+
+>>> d = DataPoint.objects.get(name="d1")
+>>> RelatedPoint.objects.filter(name="r1").update(data=d)
+>>> RelatedPoint.objects.filter(data__name="d1")
+[<RelatedPoint: r1>]
+
+Multiple fields can be updated at once
+
+>>> DataPoint.objects.filter(value="pineapple").update(value="fruit", another_value="peaches")
+>>> d = DataPoint.objects.get(name="d2")
+>>> d.value, d.another_value
+(u'fruit', u'peaches')
+
+In the rare case you want to update every instance of a model, update() is also
+a manager method.
+
+>>> DataPoint.objects.update(value='thing')
+>>> DataPoint.objects.values('value').distinct()
+[{'value': u'thing'}]
+
+"""
+}