如何在updateWidgets中修改z3c表单字段？

Question

我试图基于HTTP get变量中包含的变量动态更新表单字段.特别是www.site.com/form?id=name.我想从url中提取'id'字段并自动填充表单的memberID字段.

我可以使用self.request.get('id')访问get变量.但是我无法弄清楚如何更新表单字段.我检查了小部件文档http://packages.python.org/z3c.form/widget.html,但没有一个建议有效.

class IUpdateEmailFormSchema(interface.Interface):
    # -*- extra stuff goes here -*-
    """
    """
    memberID = schema.TextLine(title=(u'Member id'))

    email = schema.TextLine(title=(u'Email'), description=(u'The email'))

class updateEmailForm(form.Form):
    fields = field.Fields(IUpdateEmailFormSchema)
    label = _(u'Change Email')
    ignoreContext = True


    @button.buttonAndHandler(u'Update')
    def handleUpdate(self,action):
        data, errors = self.extractData()

        if data.has_key('email'):

            portal_membership = getToolByName(self.context, 'portal_membership')
            member = portal_membership.getMemberById(data['memberID'])

    def updateWidgets(self):
        print "This is update widget \n\n"
        import pdb; pdb.set_trace()
        print self.request.form['id']    #Does not work as specified in http://packages.python.org/z3c.form/widget.html
        #self.widgets["memberID"].value = self.request.get('id').encode('utf-8')
        form.Form.updateWidgets(self)

updateEmailFormView = wrap_form(updateEmailForm)

*更新:updateWidget未正确缩进.

Answer 1

updateWidgets方法是正确的做法.只是你首先调用"form.Form.updateWidgets",然后进行更改(更好的用户super()如下所示):

def updateWidgets(self):
    super(updateEmailForm, self).updateWidgets()
    id = self.request.get('id', None)
    if id:
        self.widgets["memberID"].value = id.encode('utf-8')

所以基本上错误就是订单

如果没有请求(这有点奇怪,你可能正在做那些事情)那么你可以通过以下方式得到它:

from zope.globalrequest import getRequest
request = getRequest()