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问题描述



  class F(Form):
a = StringField('a',validators是否有一种方法可以在表单中创建一个StringField()方法隐?例如:

  @ app.route('/ f',methods = ['GET','POST'])
def f():
form = F(request.form)
if foo(form):
form.a .__ MakeTemporarilyHidden __()
else:
form.a .__ MakeItVisibleAgain __()
if request.method =='GET':
return render_template('f.html',form = form)

我知道wtforms.fields.HiddenField,但是我想在StringField和HiddenField之间动态切换,并返回。



  class F(Form): 
a = StringField('a',validators = [validators.DataRequired()])

def __init __(self,* args,** kwargs):
hide_a = kwargs。 pop('hide_a')
super(F,self).__ init __(* args,** kwargs)
if hide_a:
self.a.widget = widgets.HiddenInput()

@ app.route('/ f',方法如果foo():
form = F(request.form,hide_a = True)
(),则
def f() else:
form = F(request.form)
if request.method =='GET':
return render_template('f.html',form = form)

尽管在视图中可以像你一样完成,但是最好在Form类中保留表单逻辑。 / p>

This is my model:

class F(Form):
    a = StringField('a', validators = [validators.DataRequired()])

Is there a way to make a StringField in the form temporarily hidden? Something like:

@app.route('/f', methods = ['GET', 'POST'])
def f():
    form = F(request.form)
    if foo(form):
        form.a.__MakeTemporarilyHidden__()
    else:
        form.a.__MakeItVisibleAgain__()
    if request.method == 'GET':
        return render_template('f.html', form = form)

I am aware of wtforms.fields.HiddenField but I want to dynamically switch between StringField and HiddenField and back.

解决方案

You can do something like

class F(Form):
    a = StringField('a', validators = [validators.DataRequired()])

    def __init__(self, *args, **kwargs):
        hide_a = kwargs.pop('hide_a')
        super(F, self).__init__(*args, **kwargs)
        if hide_a:
            self.a.widget = widgets.HiddenInput()

@app.route('/f', methods = ['GET', 'POST'])
def f():
    if foo():
        form = F(request.form, hide_a=True)
    else:
        form = F(request.form)
    if request.method == 'GET':
        return render_template('f.html', form = form)

Although it can be done in views too like you did, but it is better to keep form logic in your Form class.

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10-11 10:38