在保存视图时设置user_id - Django [英] Setting user_id when saving in view - Django

问题描述

我需要在添加视图中设置正在创建帖子的用户：

I need to set the user that is creating the post in the add view:

@login_required 
def add(request):
    if request.method == 'POST':
        form = BusinessForm(request.POST)
        form.user_id = request.user.id
        if form.is_valid():
            form.save()
            return HttpResponseRedirect(reverse('listing.views.detail'), args=(f.id))
    else:
        form = BusinessForm()
    return render_to_response('business/add.html', {'form':form},
        context_instance=RequestContext(request))

我分配了用户ID form.user_id = request.user.id ，但保存时，仍然给我一个错误列user_id不能为空

I assign the user id form.user_id = request.user.id but when saving, it still gives me an error Column user_id cannot be null

我做错了吗？谢谢

编辑：

我从模型中的表单中排除用户：

I am excluding the user from the form in the model:

class BusinessForm(ModelForm):
    class Meta:
        model = Business
        exclude = ('user',)

可能导致问题？如何解决这个问题？

Could that be causing the problem?? How can I work around this?

编辑2：

根据建议编辑了我的BusinessForm（）类，但是不工作：

Edited my BusinessForm() class as suggested but did not work:

class BusinessForm(ModelForm):
    class Meta:
        model = Business
        exclude = ('user',)
    def __init__(self, *args, **kwargs):
        self.request = kwargs.pop('request', None)
        return super(BusinessForm, self).__init__(*args, **kwargs)

    def save(self, *args, **kwargs):
        kwargs['commit']=False
        obj = super(BusinessForm, self).save(*args, **kwargs)
        if self.request:
            obj.user = self.request.user
        obj.save()

商业模式

class Business(models.Model):
    name = models.CharField(max_length=200)
    user = models.ForeignKey(User, unique=False)
    description = models.TextField()
    category = models.ForeignKey(Category)
    address = models.CharField(max_length=200)
    phone_number = models.CharField(max_length=10)
    website = models.URLField()
    image = models.ImageField(upload_to='business_pictures',blank=True)

推荐答案

p>您不必为此使用 init 或 save 覆盖。

You don't have to use init or save overrides for this.

您只是在表单上设置一个属性，表单不会对其进行任何操作。它不会像模型实例那样神奇地表现（您的表单不会有 user_id 属性）。

You're just setting an attribute on your form and the form doesn't do anything with it. It doesn't magically behave like a model instance (your form wouldn't have a user_id attribute).

由于您的表单是 ModelForm ，您只需使用 commit = False 获取未保存的实例，设置用户，然后在实例上调用 save 。

Since your form is a ModelForm, you can simply call save on it with commit=False to get the unsaved instance, set the user, then call save on the instance.

 if request.method == 'POST':
    form = BusinessForm(request.POST)
    if form.is_valid():
        business = form.save(commit=False)
        business.user = request.user
        business.save()

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