Django CBV-将FBV更改为CBV

在写我的第一个真正的django项目时，我意识到我的观点非常巨大。我尝试将其转换为CBV，作为额外的django训练。以下是我的fbv视图：

def index(request):
    context = {}
    categories = Category.objects.select_related()
    subcategories = SubCategory.objects.all()
    context['categories'] = categories
    context['subcategories'] = subcategories
    return render(request, 'mainapp/index.html', context)


def category(request, category_name_slug):
    context = {}
    try:
        category = Category.objects.get(slug=category_name_slug)
        subcategory = SubCategory.objects.filter(category=category)
        context['subcategories'] = subcategory
        context['category'] = category
    except Category.DoesNotExist:
        raise Http404("Category doesn't exist")
    return render(request, 'mainapp/category.html', context)


def subcategory(request, category_name_slug, subcategory_name_slug):

    context = {}
    form = SiteAddForm(initial={'url': 'http://'})
    context['form'] = form
    try:
        category = Category.objects.get(slug=category_name_slug)
        subcategory = SubCategory.objects.filter(category=category
                                                 ).get(slug=subcategory_name_slug)
        sites = Site.objects.filter(subcategory=subcategory, is_active=True)
        context['subcategory'] = subcategory
        context['category'] = category
        context['sites'] = sites
    except (SubCategory.DoesNotExist, Category.DoesNotExist):
        raise Http404("Nie ma takiej strony")
    if request.method == 'POST':
        form = SiteAddForm(request.POST)
        if form.is_valid():
            siteurl = form.cleaned_data['url']
            context['siteurl'] = siteurl
            try:
                page = AddNewSite(siteurl)
            except:
                print('ERRROR')
                context['Error'] = "URL is not responding"
                return render(request, 'mainapp/subcategory.html', context)
            title = page.title()
            description = page.description()
            keywords = page.keywords()
            if page.check_url_in_database():
                context['Error'] = "Site already in database"
                return render(request, 'mainapp/subcategory.html', context)
            else:
                form_extended = SiteAddFormFull(initial={'url': siteurl, 'name':
                                                     title, 'description':
                                                     description, 'keywords':
                                                     keywords})
            context['form_extended'] = form_extended
            if request.method == 'POST':
                form_extended = SiteAddFormFull(request.POST)
                if form_extended.is_valid():
                    keywords = form_extended.cleaned_data['keywords']
                    name = form_extended.cleaned_data['name']
                    description = form_extended.cleaned_data['description']
                    page.add_site(category, subcategory, keywords,
                                  description, name, siteurl)
                    context['added_site'] = 'Thank you - site was added'
                    messages.add_message(request, messages.SUCCESS, 'Dodano!!')

return render(request, 'mainapp/subcategory.html', context)

如何使用CBV简单地编写基本视图索引。应该是这样的： 类别： Sub1 Sub2 类别2： Sub2a Sub2b

我应该学习CBV还是继续使用FBV？它能工作吗？以下是我的类别、子类别模型：

class Category(models.Model):
    name = models.CharField(max_length=30, unique=True,
                        verbose_name='Category name')
    slug = models.SlugField()
    image = models.ImageField(upload_to='category_images',
                          verbose_name="Category image",
                          blank=True)
    description = models.TextField(default='Description',
                               verbose_name="Category description")

    class Meta:
        verbose_name_plural = "Categories"

    def save(self, *args, **kwargs):
        self.slug = slugify(self.name)
        super(Category, self).save(*args, **kwargs)

    def image_thumb(self):
        if self.image:
            return '<img src="/media/%s" width="40" height="40" />' % (self.image)
        else:
            return('')
    image_thumb.short_description = 'Thumb'
    image_thumb.allow_tags = True

    def __str__(self):
        return self.name


class SubCategory(models.Model):
    category = models.ForeignKey(
        'Category',
        related_name='subcategory',
        on_delete=models.CASCADE,
        blank=True,
        null=True,
)
    name = models.CharField(max_length=30)
    slug = models.SlugField()

    def save(self, *args, **kwargs):
        self.slug = slugify(self.name)
        super(SubCategory, self).save(*args, **kwargs)

    class Meta:
        verbose_name_plural = "Subcategories"

    def __str__(self):
        return self.name

---

我是CBV的倡导者，当尝试重用代码时，它可以让生活变得更加轻松。还有大量预定义的通用视图，对于大多数实例，这些视图只需稍加调整。对于示例索引，可以使用TemplateView：

class IndexView(TemplateView):
    template_name = "mainapp/index.html"

    def get_context_data(self, **kwargs):
        context = super(IndexView, self).get_context_data(**kwargs)
        context['categories'] = Category.objects.select_related()
        context['subcategories'] = SubCategory.objects.all()
        return context

---

这更像是要求我们去做无论如何，仅仅为了soNo而将FBV转换成CBV是毫无意义的，事实并非如此。我想得到任何建议，线索，无论什么。。。也许在你看来我的fbv足够好。。。我不知道，我只是在问。也许在你看来。。。非基础DCBV已经有一个标志不是灵丹妙药。如果你的FBV一团糟，你的CBV也会一团糟。如果您想改进代码，请从改进FBV开始。当您认为您的FBV处于良好状态时，如果您希望的话，可以尝试将其重构为CBV。将FBV转换为CBV是一种良好的做法，应该有助于了解CBV方法的细节。