Question

我希望Flask的“SubmitField”能够使用

<button type="submit" title="Save this form"><span>Save</span></button>

而不是：

<input type="submit" title="Save this form" />

我正在模板中打印出来：

{{ field(class=css_class, title=field.description, **kwargs) }}

我猜我必须以某种方式修改SubmitInput（SubmitField背后的小部件），但我不确定如何做到这一点，我是否必须修改__html __（）？

修改

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')

我希望能够这样做：

submit = InlineButton（{'name'：'submit'，'title'：'今天注册奖品。'，'type'：'submitfieldtype'，'textInsideSpan'：'保存当前工作'} ）

Answer 1

很简单，你可以像InlineButtonWidget（）一样创建新的小部件，但我认为最好从表单中删除提交并在模板中使用它

<button type="submit" title="Save this form"><span>Save</span></button>

of cource你也可以使用它：

{% for name, label in buttons %}
    <button type="submit" title="{{name}}"><span>{{name}}</span></button>
{% endfor %}

示例小部件：

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.lable ))

Answer 2

以下实施更通用。

from wtforms.widgets.core import html_params
from wtforms.widgets import HTMLString

class InlineButtonWidget(object):
    """
    Render a basic ``<button>`` field.
    """
    input_type = 'submit'
    html_params = staticmethod(html_params)

    def __call__(self, field, **kwargs):
        kwargs.setdefault('id', field.id)
        kwargs.setdefault('type', self.input_type)
        kwargs.setdefault('value', field.label.text)
        return HTMLString('<button %s>' % self.html_params(name=field.name, **kwargs))


class InlineSubmitField(BooleanField):
    """
    Represents an ``<button type="submit">``.  This allows checking if a given
    submit button has been pressed.
    """
    widget = InlineButtonWidget()


class SignupForm(Form):
    name = TextField('Name', [Length(min=1, max=200)])
    submit = InlineSubmitField('sign up')

Flask-WTF使用input = submit而不是button type = submit

2 个答案: