--- a/web/hdabo/models.py	Thu May 26 17:17:04 2011 +0200
+++ b/web/hdabo/models.py	Fri May 27 18:20:22 2011 +0200
@@ -108,9 +108,9 @@
     original_creation_date = models.DateField()
     original_modification_date = models.DateField()
     modification_datetime = models.DateTimeField(auto_now=True)
-    validation_date = models.DateTimeField()
-    validated = models.BooleanField()
-    validator = models.ForeignKey(User)
+    validation_date = models.DateTimeField(null=True, blank=True)
+    validated = models.BooleanField(default=False)
+    validator = models.ForeignKey(User, null=True, blank=True)
     tags = models.ManyToManyField(Tag, through='TaggedSheet')
     
     
@@ -188,8 +188,8 @@
 class TaggedSheet(models.Model):
     datasheet = models.ForeignKey(Datasheet)
     tag = models.ForeignKey(Tag)
-    original_order = models.IntegerField()
-    order = models.IntegerField()
-    index_note = models.FloatField()
+    original_order = models.IntegerField(default=0)
+    order = models.IntegerField(default=0)
+    index_note = models.FloatField(default=0.0)
     categories = models.ManyToManyField(TagCategory)
     
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