Index: tests/regressiontests/model_regress/models.py
===================================================================
--- tests/regressiontests/model_regress/models.py	(revision 7313)
+++ tests/regressiontests/model_regress/models.py	(working copy)
@@ -25,6 +25,8 @@
     #5218: Test models with non-default primary keys / AutoFields
     movie_id = models.AutoField(primary_key=True)
     name = models.CharField(max_length=60)
+    rating = models.DecimalField(max_digits=6, decimal_places=3, default=2.5)
+    
 
 __test__ = {'API_TESTS': """
 (NOTE: Part of the regression test here is merely parsing the model
@@ -51,5 +53,18 @@
 >>> len(a4.article_text)
 5000
 
+# check for #6783
+>>> from django.db.models.fields import DecimalField
+>>> from locale import setlocale, LC_NUMERIC
+>>> d = DecimalField(max_digits=6, decimal_places=3) 
+>>> setlocale(LC_NUMERIC,'fr_FR')
+'fr_FR'
+>>> print "%f" % 2.3
+2.3
+>>> print d.format_number(3.456) 
+3.456
+>>> m = Movie(name = "Rambo", rating = "4.2")
+>>> m.save()
+
 """
 }