3 files changed, 33 insertions, 0 deletions
diff --git a/tests/regressiontests/model_formsets_regress/__init__.py b/tests/regressiontests/model_formsets_regress/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/tests/regressiontests/model_formsets_regress/__init__.py
diff --git a/tests/regressiontests/model_formsets_regress/models.py b/tests/regressiontests/model_formsets_regress/models.py
new file mode 100644
index 0000000000..51fc6a49ab
--- /dev/null
+++ b/tests/regressiontests/model_formsets_regress/models.py
@@ -0,0 +1,9 @@
+from django.db import models
+
+class User(models.Model):
+    username = models.CharField(max_length=12, unique=True)
+    serial = models.IntegerField()
+
+class UserSite(models.Model):
+    user = models.ForeignKey(User, to_field="username")
+    data = models.IntegerField()
diff --git a/tests/regressiontests/model_formsets_regress/tests.py b/tests/regressiontests/model_formsets_regress/tests.py
new file mode 100644
index 0000000000..c20c1f4077
--- /dev/null
+++ b/tests/regressiontests/model_formsets_regress/tests.py
@@ -0,0 +1,24 @@
+from django.forms.models import inlineformset_factory
+from django.test import TestCase
+
+from models import User, UserSite
+
+class InlineFormsetTests(TestCase):
+    def test_formset_over_to_field(self):
+        "A formset over a ForeignKey with a to_field can be saved. Regression for #10243"
+        FormSet = inlineformset_factory(User, UserSite)
+        user = User.objects.create(serial=1, username='apollo13')
+        user.save()
+        data = {
+            'usersite_set-TOTAL_FORMS': u'1',
+            'usersite_set-INITIAL_FORMS': u'0',
+            'usersite_set-0-data': u'10',
+            'usersite_set-0-user': u'apollo13'
+        }
+        form_set = FormSet(data, instance=user)
+        if form_set.is_valid():
+            form_set.save()
+            usersite = UserSite.objects.all().values()[0]
+            self.assertEqual(usersite, {'data': 10, 'user_id': u'apollo13', 'id': 1})
+        else:
+            self.fail('Errors found on form:%s' % form_set.errors)
+\ No newline at end of file