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luzjoy
V2EX  ›  Python

Flask WTF 的 SelectField 如何不验证，或者说提交表单的时候可以为空

  •   
  •   luzjoy ·
    luzjoy · Jul 8, 2015 · 3812 views
    This topic created in 4137 days ago, the information mentioned may be changed or developed.

    还有就是绑定了 列表 以后 如果多出来一个 空的选项

    class UserDetails(Form):
    group_id = SelectField(u'Group', coerce=int)

    def edit_user(request, id):
    user = User.query.get(id)
    form = UserDetails(request.POST, obj=user)
    form.group_id.choices = [(g.id, g.name) for g in Group.query.order_by('name')]

    Supplement 1  ·  Jul 8, 2015
    自己已经解决：

    设置可为空

    parent = SelectField('Parent',coerce=int,validators=(validators.Optional(),),default=0)

    绑定完值以后增加一个为空的选项

    def __init__(self,*args,**kwargs):
    self.parent.choices = [(at.id,at.name) for at in ArticleType.query.all()]
    self.parent.choices.insert(0,(0,'---top---'))
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