用Tastypie重写模型字段

Question

在我的一个视图中，我定义了一个mixin，用于根据用户的会话详细信息动态设置包括客户机模型在内的许多模型的tech和operator字段，这样用户就不需要手动填写这些字段。此密信如下：

class GetTechMixin(object):
    """
    View mixin that when the form is saved, sets the
    site_user and operator.
    """
    def form_valid(self, form):
        # Get user
        user = self.request.user

        # Get tech for this user
        site_user = SiteUser.objects.get(user=user)

        # Override the tech and operator fields
        form.instance.tech = site_user
        form.instance.operator = site_user.operator

        # Save the object
        self.object = form.save()

        # Return success URL
        return HttpResponseRedirect(self.get_success_url())

我还设置了以下Tastypie API资源，目的是执行相同的操作：

class ClientResource(AbstractModelResource):
    class Meta(AbstractModelResource.Meta):
        queryset = Client.objects.all()
        resource_name = 'client'

    def obj_create(self, bundle, **kwargs):
        # Get tech for this user
        site_user = SiteUser.objects.get(user=bundle.request.user)

        # Override the tech and operator fields
        bundle.obj.tech = site_user
        bundle.obj.operator = site_user.operator

        super(ClientResource, self).obj_create(bundle, **kwargs)

Answer 1

万一有人发现这个，我找到了解决办法。最简单的方法就是用一个新方法重写obj_create方法，如下所示：

def obj_create(self, bundle, **kwargs):
    # Get tech for this user
    site_user = SiteUser.objects.get(user=bundle.request.user)

    bundle.obj = self._meta.object_class()

    for key, value in kwargs.items():
        setattr(bundle.obj, key, value)

    # Override the tech and operator fields
    setattr(bundle.obj, 'tech', site_user)
    setattr(bundle.obj, 'operator', site_user.operator)

    self.authorized_create_detail(self.get_object_list(bundle.request), bundle)
    bundle = self.full_hydrate(bundle)
    return self.save(bundle);