将 request.user 与 Django ModelForm 一起使用 [英] Using request.user with Django ModelForm

问题描述

我遇到了登录用户和 Django ModelForm 的问题.我有一个名为 _Animal_ 的类，它有一个 ForeignKey 到 User 和一些与动物相关的数据，如年龄、种族等.

I'm having a problem with logged users and a Django ModelForm. I have a class named _Animal_ that has a ForeignKey to User and some data related to the animal like age, race, and so on.

用户可以将动物添加到数据库中，我必须跟踪每个动物的作者，因此我需要添加在用户创建动物实例时记录的 request.user.

A user can add Animals to the db and I have to track the author of each animal, so I need to add the request.user that is logged when the user creates an animal instance.

models.py

class Animal(models.Model):
    name = models.CharField(max_length=300)
    age = models.PositiveSmallIntegerField()
    race = models.ForeignKey(Race)
    ...
    publisher = models.ForeignKey(User)
    def __unicode__(self):
        return self.name

class AnimalForm(ModelForm):
    class Meta:
        model = Animal

主要目标是隐藏表单中的发布者字段，并在点击保存按钮时提交登录的用户.

The main goal is hide the publisher field in the form, and submit the logged user when hitting save button.

我可以使用 initial 在视图中捕获当前用户，但我还想要的是不显示该字段.

I can catch the current user in the view using initial, but what I also want is not display the field.

views.py

@login_required
def new_animal(request):
    if request.method == "POST":
        form = AnimalForm(request.POST)
        if form.is_valid():
            form.save()
            return redirect('/')
        else:
            variables = RequestContext(request, {'form': form})
            return render_to_response('web/animal_form.html', variables)
    else:
        form = AnimalForm(initial={'publisher': request.user})
    variables = RequestContext(request, {'form': form})
    return render_to_response('web/animal_form.html', variables)

推荐答案

你只需要从表单中排除它，然后在视图中设置即可.

You just need to exclude it from the form, then set it in the view.

class AnimalForm(ModelForm):
    class Meta:
        model = Animal
        exclude = ('publisher',)

...并在视图中:

    form = AnimalForm(request.POST)
    if form.is_valid():
        animal = form.save(commit=False)
        animal.publisher = request.user
        animal.save()

(还要注意第一个 else 子句 - 紧跟在重定向之后的行 - 是不必要的.如果你省略它，执行将下降到视图末尾的两行，它们是相同的.)

(Note also that the first else clause - the lines immediately following the redirect - is unnecessary. If you leave it out, execution will fall through to the two lines at the end of the view, which are identical.)

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