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Fixes #10786 -- Document that NullBooleanField should be used rather …

…than BooleanField with null=True. Thanks sbj3 for the patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@16020 bcc190cf-cafb-0310-a4f2-bffc1f526a37
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commit 91e59aeca0d4a554c418629999d1d9e758912c5c 1 parent ab9e596
@SmileyChris SmileyChris authored
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  1. +6 −0 docs/ref/models/fields.txt
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6 docs/ref/models/fields.txt
@@ -59,6 +59,9 @@ string, not ``NULL``.
coerced for string-based fields that have the empty string as a possible
value, and the value ``NULL`` will be stored to denote the empty string.
+If you want to accept :attr:`~Field.null` values with :class:`BooleanField`,
+use :class:`NullBooleanField` instead.
+
``blank``
---------
@@ -341,6 +344,9 @@ A true/false field.
The admin represents this as a checkbox.
+If you need to accept :attr:`~Field.null` values then use
+:class:`NullBooleanField` instead.
+
.. versionchanged:: 1.2
In previous versions of Django when running under MySQL ``BooleanFields``
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