我希望在验证后重置表单。目前,表单在提交并有效后仍会显示以前的数据。基本上,我希望表单恢复到原始状态,所有字段都清理干净。这样做的正确性是什么?
@mod.route('/', methods=['GET', 'POST'])
def home():
form = NewRegistration()
if form.validate_on_submit():
#save in db
flash(gettext(u'Thanks for the registration.'))
return render_template("users/registration.html", form=form)
答案 0 :(得分:19)
问题在于,您始终使用传入的任何数据呈现表单,即使该数据已经过验证和处理。此外,浏览器存储最后一个请求的状态,因此如果此时刷新页面,浏览器将重新提交表单。
处理成功的表单请求后,重定向到页面以获得新的状态。
@app.route('/register', methods=['GET', 'POST'])
def register():
form = RegistrationForm()
if form.validate_on_submit():
# do stuff with valid form
# then redirect to "end" the form
return redirect(url_for('register'))
# initial get or form didn't validate
return render_template('register.html', form=form)
答案 1 :(得分:0)
但是一旦我不得不重新加载一个只有几个必须重置的字段的表单。 所以,我这样做了,也许这不是最干净的方法,但是对我有用:
form = MyForm()
if form.validate_on_submit():
# save all my data...
myvar1 = form.field1.data
myvar2 = form.field2.data
# etc...
# at first GET and at every reload, this is what gets executed:
form.field1.data = "" # this is the field that must be empty at reload
form.field2.data = someobject # this is a field that must be filled with some value that I know
return render_template('mypage.html', form=form)