Fixed #13935, added support for using QuerySet.dates across related fields. Thanks to valyagolev for his work on the patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@14461 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/regressiontests/dates/models.py

@@ -0,0 +1,23 @@
+from django.db import models
+
+
+class Article(models.Model):
+    title = models.CharField(max_length=100)
+    pub_date = models.DateField()
+
+    categories = models.ManyToManyField("Category", related_name="articles")
+
+    def __unicode__(self):
+        return self.title
+
+class Comment(models.Model):
+    article = models.ForeignKey(Article, related_name="comments")
+    text = models.TextField()
+    pub_date = models.DateField()
+    approval_date = models.DateField(null=True)
+
+    def __unicode__(self):
+        return 'Comment to %s (%s)' % (self.article.title, self.pub_date)
+
+class Category(models.Model):
+    name = models.CharField(max_length=255)