我已经编写了一个视图来发送表单，但是我必须对用户进行分级，所以我编写了两个mixin，但是现在我的author用户无法发送文章。
查看：

from .mixins import FieldsMixin, FromValidMixin
class ArticleCreate(LoginRequiredMixin, FromValidMixin , FieldsMixin , CreateView):
    model = Article
    template_name = "registration/article-create-update.html"

混合物：

from django.http import Http404

class FieldsMixin():
    def dispatch(self, request, *args, **kwargs):
        if request.user.is_superuser:
            self.fields = ["author" ,"title" , "slug" , "category" , "description" , "thumbnail" , "publish" , "status"]
        
        elif request.user.is_author:
            self.fields = ["title" , "slug" , "category" , "description" , "thumbnail" , "publish" , "status"]

        else:
            raise Http404("You can't see this page")

        return super().dispatch(request, *args, **kwargs)

class FromValidMixin():
    def form_valid(self, form):
        if self.request.user.is_superuser:
            form.save()
        else:
            self.obj = form.save(commit=False)
            self.obj.author = self.request.user
            self.obj.status = 'd'
        return super().form_valid(form)