Is it possible to have a string or text field's length parameter 
automatically populate the SQLFORM-generated input's maxlength?

Such that:
Field('personname', 'string', length=32, label='First name', 
requires=[IS_LENGTH(32), IS_NOT_EMPTY()]),

Will produce:
<input class="string" id="table_personname" name="personname" value="" 
maxlength="32" type="text"></input>

I know I can add the parameter to the form in the controller, but this 
makes maintenance tougher if the field is used all over the place.

Many thanks,
Tim


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