1 files changed, 68 insertions, 0 deletions
diff --git a/tests/select_related/models.py b/tests/select_related/models.py
new file mode 100644
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+++ b/tests/select_related/models.py
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+"""
+41. Tests for select_related()
+
+``select_related()`` follows all relationships and pre-caches any foreign key
+values so that complex trees can be fetched in a single query. However, this
+isn't always a good idea, so the ``depth`` argument control how many "levels"
+the select-related behavior will traverse.
+"""
+
+from django.db import models
+from django.utils.encoding import python_2_unicode_compatible
+
+# Who remembers high school biology?
+
+@python_2_unicode_compatible
+class Domain(models.Model):
+    name = models.CharField(max_length=50)
+    def __str__(self):
+        return self.name
+
+@python_2_unicode_compatible
+class Kingdom(models.Model):
+    name = models.CharField(max_length=50)
+    domain = models.ForeignKey(Domain)
+    def __str__(self):
+        return self.name
+
+@python_2_unicode_compatible
+class Phylum(models.Model):
+    name = models.CharField(max_length=50)
+    kingdom = models.ForeignKey(Kingdom)
+    def __str__(self):
+        return self.name
+
+@python_2_unicode_compatible
+class Klass(models.Model):
+    name = models.CharField(max_length=50)
+    phylum = models.ForeignKey(Phylum)
+    def __str__(self):
+        return self.name
+
+@python_2_unicode_compatible
+class Order(models.Model):
+    name = models.CharField(max_length=50)
+    klass = models.ForeignKey(Klass)
+    def __str__(self):
+        return self.name
+
+@python_2_unicode_compatible
+class Family(models.Model):
+    name = models.CharField(max_length=50)
+    order = models.ForeignKey(Order)
+    def __str__(self):
+        return self.name
+
+@python_2_unicode_compatible
+class Genus(models.Model):
+    name = models.CharField(max_length=50)
+    family = models.ForeignKey(Family)
+    def __str__(self):
+        return self.name
+
+@python_2_unicode_compatible
+class Species(models.Model):
+    name = models.CharField(max_length=50)
+    genus = models.ForeignKey(Genus)
+    def __str__(self):
+        return self.name