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Update upgrade.rst

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Added docs for the new function: clean()
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Jiequan 2013-06-02 20:46:51 +08:00
commit 0493bbbc76
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docs/upgrade.rst
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@ -91,6 +91,13 @@ the case and the data is set only in the ``document._data`` dictionary: ::
File "<stdin>", line 1, in <module> File "<stdin>", line 1, in <module>
AttributeError: 'Animal' object has no attribute 'size' AttributeError: 'Animal' object has no attribute 'size'
The Document class has introduced a reserved function `clean()`, which will be
called before saving the document. If your document class happen to have a method
with the same name, please try rename it.
def clean(self):
pass
ReferenceField ReferenceField
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