Ticket #1409: field_defaults.diff

django/db/models/fields/__init__.py

@@ -163 +163 @@
     def get_default(self):
         "Returns the default value for this field."
         if self.default != NOT_PROVIDED:
-            if hasattr(self.default, '__get_value__'):
-                return self.default.__get_value__()
+            if callable(self.default):
+                return self.default()
             return self.default
         if not self.empty_strings_allowed or self.null:
             return None

tests/modeltests/field_defaults/models.py

@@ +1 @@
+"""
+XXX. Callable defaults
+
+???
+"""
+
+from django.db import models
+from datetime import datetime
+
+class Article(models.Model):
+    headline = models.CharField(maxlength=100, default='Default headline')
+    pub_date = models.DateTimeField(default = datetime.now)
+    
+    def __repr__(self):
+        return self.headline
+
+API_TESTS = """
+>>> from datetime import datetime
+
+# No articles are in the system yet.
+>>> Article.objects.all()
+[]
+
+# Create an Article.
+>>> a = Article(id=None)
+
+# Grab the current datetime it should be very close to the default that just
+# got saved as a.pub_date
+>>> now = datetime.now()
+
+# Save it into the database. You have to call save() explicitly.
+>>> a.save()
+
+# Now it has an ID. Note it's a long integer, as designated by the trailing "L".
+>>> a.id
+1L
+
+# Access database columns via Python attributes.
+>>> a.headline
+'Default headline'
+
+# make sure the two dates are sufficiently close
+>>> d = now - a.pub_date
+>>> d.seconds < 5
+True
+
+
+"""