1

好吧，这实际上可能是一个简单的案例，但我很难弄清楚。

我有两个用户注册渠道（公司和其他所有人）。当企业用户通过我的注册表单创建 User 实例时，我还希望他们输入创建相关实例的辅助表单（基于 Website 和 Organization_Contact 模型）。

我知道如何通过发出额外的同步或异步请求来解决这个问题，但我希望用户填写三个表单并一键提交。

我的问题是其他两种形式依赖于用户外键作为字段。我已经将该字段设置为“null=True，blank=True”，这样我就可以在没有外键的情况下验证和保存表单，但我最终想将该键添加到两个模型实例中。

我认为我可以验证这三个表单，保存 UserForm，然后使用模型查询集返回新的 User.id（全部在一个视图中）。然后，我将该 user_id 值添加到其他两个表单字典（WebsiteForm 和 Organization_ContactForm）。

它会这样工作：

def register_company(request):
    if request.method=='POST'
       uform=UserCreationForm(request.POST, prefix='user')
       sform=SiteForm(request.POST, prefix='site')
       oform=OrgForm(request.POST, prefix='site')
       if uform.is_valid() and sform.is_valid() and oform.is_valid():
            uform.save()
            user=User.objects.get(email__iexact=uform.cleaned_data['email'])
            uid=unicode(user.id)
       #now I'd add uid back into the SiteForm and Orgform dictionaries and then save both instances

问题：1）不确定我是否可以保存模型表单，然后在单个视图中将该模型实例作为查询集返回

2）我说我不确定，因为我无法通过尝试将变量传递给查询集的问题。

The get manager method seems to not accept a variable there. I assume as much because I passed an equivalent hardcoded string and it worked.

Ok, so I was thinking about creating a new manager method (email) which accepted a variable argument (the cleaned email field) and then retrying the process of saving one modelform, retrieving the model id data, and saving the other modelforms.

I also thought that I might be able to handle this issue through a post save signal.

Just general direction here would be really helpful. I need a starting point.

4

2 回答 2

2

Are these all ModelForms?

if request.method=='POST'
   uform=UserCreationForm(request.POST, prefix='user')
   sform=SiteForm(request.POST, prefix='site')
   oform=OrgForm(request.POST, prefix='site')
   if uform.is_valid() and sform.is_valid() and oform.is_valid():
        # save returns the object 
        user = uform.save()

        # commit = false doesn't save to DB.
        site = sform.save(commit=False)
        site.user = user
        site.save()

        org = oform.save(commit=False)
        org.user = user
        org.save()

Update regarding comments: Why spread this form saving logic around into multiple areas and files (signals, form save) when you can do it in one place?

The code is more readable, and you even save lines of code. Unless it's going to be used globally.

于 2011-02-17T18:49:15.437 回答
1

This is how I would do it:

def register_company(request):
    uform=UserCreationForm(request.POST or None, prefix='user')
    sform=SiteForm(request.POST or None, prefix='site')
    oform=OrgForm(request.POST or None, prefix='site')

    if request.POST and all((uform.is_valid(), sform.is_valid(), oform.is_valid()):
        user = uform.save()
        sform.save(user)
        oform.save(user)

    ruturn ...

class UserCreateionForm(ModelForm):
    Meta:
        model = User

class SiteForm(ModelForm):
    Meta:
        model=Site
        exclude=['user', ]

    def save(self, user, commit=True):
        self.instance.user = user
        return super(SiteForm, self).save(commit=commit)
于 2011-02-17T18:53:28.017 回答