Merged regressiontests and modeltests into the test root.

tests/mutually_referential/models.py

@@ -0,0 +1,20 @@
+"""
+24. Mutually referential many-to-one relationships
+
+Strings can be used instead of model literals to set up "lazy" relations.
+"""
+
+from django.db import models
+
+
+class Parent(models.Model):
+    name = models.CharField(max_length=100)
+
+    # Use a simple string for forward declarations.
+    bestchild = models.ForeignKey("Child", null=True, related_name="favoured_by")
+
+class Child(models.Model):
+    name = models.CharField(max_length=100)
+
+    # You can also explicitally specify the related app.
+    parent = models.ForeignKey("mutually_referential.Parent")