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I would like Flask's "SubmitField" to use <button type="submit" title="Save this form"><span>Save</span></button> Instead of: <input type="submit" title="Save this form" /> I am printing it out in templates: {{ field(class=css_class, title=field.description, **kwargs) }} I'm guessing that I have to somehow modify SubmitInput (the widget behind SubmitField), but I'm not sure how to do that exactly, do I somehow have to modify __html__()? EDIT: from flask.ext.wtf import Required, Length, EqualTo, Field, TextInput from flask import Markup class InlineButtonWidget(object): html = """ <button type="submit" title="%s"><span>%s</span></button> """ def __init__(self, input_type='submit'): self.input_type = input_type def __call__(self, field, **kwargs): kwargs.setdefault('id', field.id) kwargs.setdefault('type', self.input_type) if 'value' not in kwargs: kwargs['value'] = field._value() return HTMLString(self.html % (field.name, field.label )) class InlineButton(Field): widget = InlineButtonWidget() def _value(self): if self.data: return u', '.join(self.data) else: return u'' class SignupForm(Form): name = TextField('Name', [Length(min=1, max=200)]) submit = InlineButton('sign up') I want to be able to do this: submit = InlineButton({'name' : 'submit', 'title' : 'sign up today for prizes.', 'type' : 'submitfieldtype', 'textInsideSpan' : 'Save Current Work' })

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