Ticket #3328: imply_blank.patch

django/db/models/fields/__init__.py

@@ -66 +66 @@
     creation_counter = 0
 
     def __init__(self, verbose_name=None, name=None, primary_key=False,
-        maxlength=None, unique=False, blank=False, null=False, db_index=False,
+        maxlength=None, unique=False, blank=None, null=False, db_index=False,
         core=False, rel=None, default=NOT_PROVIDED, editable=True,
         prepopulate_from=None, unique_for_date=None, unique_for_month=None,
         unique_for_year=None, validator_list=None, choices=None, radio_admin=None,
@@ -75 +75 @@
         self.verbose_name = verbose_name
         self.primary_key = primary_key
         self.maxlength, self.unique = maxlength, unique
+        if blank is None:
+            blank = null
         self.blank, self.null = blank, null
         self.core, self.rel, self.default = core, rel, default
         self.editable = editable

docs/model-api.txt

@@ -451 +451 @@
 ``blank``
 ~~~~~~~~~
 
-If ``True``, the field is allowed to be blank.
+If ``True``, the field is allowed to be blank. Defaults to the same value
+as the ``null`` argument (which defaults to ``False``).
 
 Note that this is different than ``null``. ``null`` is purely
 database-related, whereas ``blank`` is validation-related. If a field has