1 files changed, 36 insertions, 0 deletions
diff --git a/tests/admin_filters/models.py b/tests/admin_filters/models.py
new file mode 100644
index 0000000000..e0b8bde2de
--- /dev/null
+++ b/tests/admin_filters/models.py
@@ -0,0 +1,36 @@
+from __future__ import unicode_literals
+
+from django.contrib.auth.models import User
+from django.db import models
+from django.utils.encoding import python_2_unicode_compatible
+
+
+@python_2_unicode_compatible
+class Book(models.Model):
+    title = models.CharField(max_length=50)
+    year = models.PositiveIntegerField(null=True, blank=True)
+    author = models.ForeignKey(User, verbose_name="Verbose Author", related_name='books_authored', blank=True, null=True)
+    contributors = models.ManyToManyField(User, verbose_name="Verbose Contributors", related_name='books_contributed', blank=True, null=True)
+    is_best_seller = models.NullBooleanField(default=0)
+    date_registered = models.DateField(null=True)
+    no = models.IntegerField(verbose_name='number', blank=True, null=True) # This field is intentionally 2 characters long. See #16080.
+
+    def __str__(self):
+        return self.title
+
+
+@python_2_unicode_compatible
+class Department(models.Model):
+    code = models.CharField(max_length=4, unique=True)
+    description = models.CharField(max_length=50, blank=True, null=True)
+
+    def __str__(self):
+        return self.description
+
+@python_2_unicode_compatible
+class Employee(models.Model):
+    department = models.ForeignKey(Department, to_field="code")
+    name = models.CharField(max_length=100)
+
+    def __str__(self):
+        return self.name