python - WTForms RadioField 默认值

Question

我正在用这样的 wtforms 生成一个 html 表单:

<div class="control-group">
    {% for subfield in form.time_offset %}
    <label class="radio">
        {{ subfield }}
        {{ subfield.label }}
    </label>
    {% endfor %}
</div>

我的表单类是这样的:

class SN4639(Form):
    time_offset = RadioField(u'Label', choices=[
        ('2', u'Check when Daylight saving has begun, UTC+02:00'),
        ('1', u'Check when Daylight saving has stopped, UTC+01:00')],
        default=2, validators=[Required()])

当我现在打开编辑表单时，我通过 SQL 获得值 1 或 2 - 如何预设特定的单选按钮？

Answer 1

default=2 需要是字符串类型，而不是 int:

class SN4639(Form):
    time_offset = RadioField(u'Label', choices=[
        ('2', u'Check when Daylight saving has begun, UTC+02:00'),
        ('1', u'Check when Daylight saving has stopped, UTC+01:00')],
        default='2', validators=[Required()])