MaxSizeValidator custom max size

MaxSizeValidator has the following code to allow a class/instance to
override how the maximum size for a field is evaluated:

elif hasattr(aq_base(instance), 'getMaxSizeFor'):
            maxsize = instance.getMaxSizeFor(field.getName())

The problem is, that if 2+ fields use MaxSizeValidator, but
'getMaxSize' is only defined for one of the fields, then the other
field will cause an error when this line is run. The code should
instead look something like this:

        if kwargs.has_key('maxsize'):
            maxsize = kwargs.get('maxsize')
        else:
            maxsize = None
            if hasattr(aq_base(instance), 'getMaxSizeFor'):
                try:
                    maxsize = instance.getMaxSizeFor(field.getName())
                except:
                    pass
            if maxSize != None:
                if hasattr(field, 'maxsize'):
                    maxsize = field.maxsize
                else:
                    # set to given default value (default defaults to 0)
                    maxsize = self.maxsize

Peace,
George


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