如何在单个formView类Django中验证多重表单 [英] How to validate mulitple forms in a single formView class Django

问题描述

我有一个 formView 类，您可以在下面看到： -

view.py

  class ThreadForm（FormView）：
 template_name ='thread.html'
 form_class = ThreadModelForm 
 success_url ='/ success'
 
 def form_valid（self，form）：
＃当有效的表单数据已被POST时，此方法被调用。 
＃它应该返回一个HttpResponse。 
打印form.cleaned_data 
返回超级（ThreadForm，self）.form_valid（form）
 
 def get_context_data（self，** kwargs）：
 context = ThreadForm，self）.get_context_data（** kwargs）
上下文['second_form'] = MessageModelForm 
返回上下文
  

thread.html

  {form.as_p} 
 {second_form.as_p} 
 SUBMIT 
  

在我的模板中，我有两个模型，但单提交按钮。问题是我没有从我的 second_form 获取任何数据，并且不能验证 second_form 。我从表单中收到数据，但不是从 second_form 中收到数据。任何人都可以告诉我如何验证 second_form 数据。谢谢

一种方法是使用 request.post ['data'] 但是有没有其他方法？

解决方案

我使用 FormView （或 CreateView ， UpdateView 等）
这就是我所做的：

pre $ class ThreadForm（FormView）：
template_name ='thread.html'
form_class = ThreadModelForm
...

def get_second_form（self）：
＃构造第二个表单的逻辑到这里
＃如果self.request.method =='POST'，你需要传递self.request.POST
＃表格。添加任何你需要创建窗体
如果self.request.method =='POST'：
返回SecondForm（self.request.POST）
else：
返回SecondForm ）

def form_valid（self，form）：
self.second_form = self.get_second_form（）
如果self.second_form.is_valid（）：
＃全部好逻辑在这里，最简单的情况是
＃返回super.form_valid
返回超级（ThreadForm，self）.form_valid（form）
else：
＃第一种形式是无效的
返回超级（ThreadForm，self）.form_invalid（form）

＃只有当您需要验证第二个表单时，第一个表单是
＃无效
def form_invalid（self，form）：
self.second_form = self.get_second_form（）
self.second_form.is_valid（）
返回超级（ThreadForm，self）.form_invalid（ form）

＃Tr这里是
def get_context_data（self，** kwargs）：
context = super（ThreadedForm，self）.get_context_data（** kwargs）
上下文['second_form'] = getattr ，'second_form'，self.get_second_form（））
返回上下文


I have a formView class as you can see below:-

view.py

class ThreadForm(FormView):
        template_name = 'thread.html'
        form_class = ThreadModelForm
        success_url = '/success'

        def form_valid(self, form):
            # This method is called when valid form data has been POSTed.
            # It should return an HttpResponse.
            print form.cleaned_data
            return super(ThreadForm, self).form_valid(form)

        def get_context_data(self, **kwargs):
            context = super(ThreadForm, self).get_context_data(**kwargs)
            context['second_form'] = MessageModelForm
            return context

thread.html

{form.as_p}
{second_form.as_p}
SUBMIT 

In my template thread.html, I have two modelforms but single submit button. The problem is I am not getting any data from my second_form and not able validate second_form as well. I am receiving data from form but not from second_form. Could anyone tell me how to validate second_form data. Thank you

One method is to use request.post['data'] but is there any other method there?

解决方案

I do use FormView (or CreateView, UpdateView, etc.) This is what I do:

class ThreadForm(FormView):
    template_name = 'thread.html'
    form_class = ThreadModelForm
    ...

    def get_second_form(self):
       # logic to construct second form goes here
       # if self.request.method == 'POST' you need to pass self.request.POST
       # to the form. Add whatever you need to create the form
       if self.request.method == 'POST':
          return SecondForm(self.request.POST)
       else:
          return SecondForm()

    def form_valid(self, form):
        self.second_form = self.get_second_form()
        if self.second_form.is_valid():
            # All good logic goes here, which in the simplest case is
            # returning super.form_valid
            return super(ThreadForm, self).form_valid(form)
        else:
            # Otherwise treat as if the first form was invalid
            return super(ThreadForm, self).form_invalid(form)

    # Do this only if you need to validate second form when first form is
    # invalid
    def form_invalid(self, form):
        self.second_form = self.get_second_form()
        self.second_form.is_valid()
        return super(ThreadForm, self).form_invalid(form)

    # Trick is here
    def get_context_data(self, **kwargs):
        context = super(ThreadedForm, self).get_context_data(**kwargs)
        context['second_form'] = getattr(self, 'second_form', self.get_second_form())
        return context

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