如何解决 Flask 中使用 WTForm 时自定 Button 却在页面总被 Div 包裹住的问题，flaskwtform,wtform中，我想定制

如何解决 Flask 中使用 WTForm 时自定 Button 却在页面总被 Div 包裹住的问题，flaskwtform,wtform中，我想定制

wtform中，我想定制一个button。

参考官方文档编写了ButtonFiled()和ButtonWidget(object)以及ButtonInput(Input).

为什么我用了与库中一摸一样的代码，只是改了个函数名字，在页面生成的却总会被包裹在一个 DIV中？且会被加上一个Label。

效果如图：

我的代码如下：

# !/usr/bin/env python# coding: utf-8''''''from werkzeug.utils import escapefrom wtforms import BooleanField,Fieldfrom wtforms.widgets import HTMLString, html_params, Input, SubmitInputfrom wtforms.compat import text_type__author__ = 'Jux.Liu'class ButtonWidget(object):    '''    用于显示按钮(button)的部件(widget)    '''    def __call__(self, field, **kwargs):        kwargs.setdefault('name', field.name)        kwargs.setdefault('value', field.value)        kwargs.setdefault('type', "submit")        return HTMLString('<button %s>%s</button>' % (            html_params(**kwargs),            escape(field._value())            ))class ButtonInput(Input):    """    Renders a submit button.    The field's label is used as the text of the submit button instead of the    data on the field.    """    input_type = 'submit'    def __call__(self, field, **kwargs):        kwargs.setdefault('value', field.label.text)        return super(ButtonInput, self).__call__(field, **kwargs)class ButtonOneField(BooleanField):    '''    定义可以将按钮(button)用于 Flask 表单(form)的域(field)    '''    widget = SubmitInput()class ButtonTwoField(Field):    '''    定义可以将按钮(button)用于 Flask 表单(form)的域(field)    '''    widget = ButtonWidget()    def __init__(self, text, name, value, **kwargs):        super(ButtonTwoField, self).__init__(**kwargs)        self.text = text        self.value = value        self.name = name    def _value(self):        return str(self.text)

官方库代码截取如下：

class SubmitField(BooleanField):    """    Represents an ``<input type="submit">``.  This allows checking if a given    submit button has been pressed.    """    widget = widgets.SubmitInput()class BooleanField(Field):    """    Represents an ``<input type="checkbox">``.    :param false_values:        If provided, a sequence of strings each of which is an exact match        string of what is considered a "false" value. Defaults to the tuple        ``('false', '')``    """    widget = widgets.CheckboxInput()    false_values = ('false', '')    def __init__(self, label=None, validators=None, false_values=None, **kwargs):        super(BooleanField, self).__init__(label, validators, **kwargs)        if false_values is not None:            self.false_values = false_values    def _value(self):        if self.raw_data:            return text_type(self.raw_data[0])        else:            return 'y'class SubmitInput(Input):    """    Renders a submit button.    The field's label is used as the text of the submit button instead of the    data on the field.    """    input_type = 'submit'    def __call__(self, field, **kwargs):        kwargs.setdefault('value', field.label.text)        return super(SubmitInput, self).__call__(field, **kwargs)

update:
出现这个问题的情况是使用 wtf.quick_form()时出现的，如果直接调用 form.button，那么生成的按钮是正常的。
update:
经测试，在ButtonTwoField(Field)的构造函数中，增加对于label的设定，可以将label改为空，但是依旧会被div包裹住.

import wtforms import Labelclass ButtonTwoField(Field):    '''    定义可以将按钮(button)用于 Flask 表单(form)的域(field)    '''    widget = ButtonWidget()    def __init__(self, text, name, value, **kwargs):        super(ButtonTwoField, self).__init__(**kwargs)        self.label=Label(field_id=999, text='' )        self.text = text        self.value = value        self.name = name    def _value(self):        return str(self.text)

编橙之家文章，