django - 如何允许指定用户在 django 中查看指定书籍的优质内容

Question

我希望有一个人可以帮助我。我是 django 的学生和初学者。我试图允许某个高级用户查看特定书籍的高级内容。我已经有书籍、用户和会员类型的模型。但是，我想知道如何连接这 3 个，以便某个用户只能从书籍列表中看到一本特定书籍的ALLOWED PREMIUM CONTENT 。

这是代码示例：

类书（模型。模型）：

code = models.SlugField(unique=True, help_text="Enter BIC Code", null=True)
title = models.CharField(max_length=200)
author = models.ForeignKey('Author', on_delete=models.CASCADE, null=True)
artist = models.ForeignKey('Artist', on_delete=models.CASCADE, null=True)

summary = models.TextField(max_length=1000, help_text="Enter a brief description of the book")
book_type = models.ForeignKey('Type', on_delete=models.SET_NULL, null=True)
isbn = models.CharField('ISBN', max_length=15, help_text='Enter ISBN number')

status = models.CharField(choices=STATUS_CHOICES, default='Ongoing', null=True, max_length=30)
genre = models.ManyToManyField(Genre, help_text="Select a genre for this book")
language = models.CharField(max_length=50, null=True,
                            help_text="Enter the book's natural language (e.g. English, Tagalog, Japanese etc.)")

released_date = models.CharField(max_length=50, null=True, help_text="Enter the Released Date (e.g. March 2014)")
cover = models.ImageField(upload_to='book_cover', null=True, validators=[img_file_extension],
                          help_text="Image File Only")

teaser = models.FileField(upload_to='book_preview', validators=[pdf_file_extension], help_text="PDF File Only")
featured = models.BooleanField(null=True, default=False)

timestamp = models.DateTimeField(default=timezone.now)


def display_genre(self):
    return ', '.join([genre.name for genre in self.genre.all()[:3]])

display_genre.short_description = 'Genre'

def save(self, *args, **kwargs):
    super().save(*args, **kwargs)

def get_absolute_url(self):
    return reverse('book-detail',  args=[str(self.id)])

def __str__(self):
    return self.title

类页面（模型。模型）：

book = models.ForeignKey('Book', on_delete=models.CASCADE, null=True)
file = models.FileField(upload_to='book_content', validators=[pdf_file_extension], help_text="PDF File Only")


def __str__(self):
    return self.book.title

def get_absolute_url(self):
    return reverse('page-detail',  kwargs={'id', self.id})

类成员资格（模型。模型）：

user = models.OneToOneField(User, on_delete=models.CASCADE)
title = models.ManyToManyField(Book)
premium = models.BooleanField(default=False)
reference = models.CharField(max_length=40, blank=True)




def __str__(self):
    return self.user.username

我不知道在views.py之后该怎么做

class PageDetailView(LoginRequiredMixin, generic.View):

def get(self, request, *args, **kwargs):
    book = get_object_or_404(Book)
    page = get_object_or_404(Page)
    membership = get_object_or_404(Membership, user=request.user)
    context={'object': None}

    if #-----------------------


    return render(request, "catalog/page_detail.html", context)

标签： djangodjango-views