some chunk management automation

[redakcja.git] / apps / dvcs / models.py

diff --git a/apps/dvcs/models.py b/apps/dvcs/models.py
index 6c5796a..dddbf3a 100644 (file)
--- a/apps/dvcs/models.py
+++ b/apps/dvcs/models.py
@@ -167,10 +167,11 @@ class Document(models.Model):
     """
         File in repository.        
     """
-    creator = models.ForeignKey(User, null=True, blank=True)
+    creator = models.ForeignKey(User, null=True, blank=True, editable=False)
     head = models.ForeignKey(Change,
                     null=True, blank=True, default=None,
-                    help_text=_("This document's current head."))
+                    help_text=_("This document's current head."),
+                    editable=False)
 
     def __unicode__(self):
         return u"{0}, HEAD: {1}".format(self.id, self.head_id)
@@ -239,7 +240,7 @@ class Document(models.Model):
         return rev if rev is not None else -1
 
     def at_revision(self, rev):
-        if rev:
+        if rev is not None:
             return self.change_set.get(revision=rev)
         else:
             return self.head