提交后清除有效的表单 [英] Clear valid form after it is submitted

问题描述

验证后，我想重置表单。目前表格在提交后仍然会显示之前的数据，并且有效。基本上，我希望表单能够回到原来的状态，所有的领域都是干净的。什么是正确的做到这一点？

  @ mod.route（'/'，methods = ['GET'，'POST '））
 def home（）：
 form = NewRegistration（）
 $ b $ if form.validate_on_submit（）：
 #save in db 
 
 
 $ b return render_template（users / registration.html，form = form）
  $ b $ flash（gettext（u'Thanks for the registration。'））
 
 return render_template 

解决方案

问题在于，您始终使用传入的任何数据来呈现表单，即使数据验证和处理。另外，浏览器存储最后一次请求的状态，所以如果刷新页面，浏览器将重新提交表单。

处理成功表单请求，重定向到页面以获得新鲜状态。

  @ app.route（'/ register'，methods = [ '）
 def register（）：
 form = RegistrationForm（）
 $ b $如果form.validate_on_submit（）：
＃有效的形式
＃然后重定向到结束形式
返回重定向（url_for（'register'））
 
＃初始化get或form没有验证
返回render_template（'register.html'，form = form）
  

I want to reset the form after it validates. Currently the form will still show the previous data after it is submitted and valid. Basically, I want the form to go back to the original state with all fields clean. What is the correct to do this?

@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)

解决方案

The issue is that you're always rendering the form with whatever data was passed in, even if that data validated and was handled. In addition, the browser stores the state of the last request, so if you refresh the page at this point the browser will re-submit the form.

After handling a successful form request, redirect to the page to get a fresh state.

@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)

这篇关于提交后清除有效的表单的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！