Question

我想为我的django post应用程序创建一个“ update post”功能。但是我得到一个错误。

AttributeError位于/ post / 106 /

“发布”对象没有属性“子弹”

views.py

def post_update(request, slug):

    if not request.user.is_authenticated():
        return Http404()

    post = get_object_or_404(Post, slug=slug)
    form = PostForm(request.POST or None, request.FILES or None, instance=post)
    if form.is_valid():
        form.save()
        messages.success(request, "updated")
        return HttpResponseRedirect(post.get_absolute_url())

    context = {
        'form': form
    }

    return render(request, "blog/post_edit.html", context)

models.py

class Post(models.Model):
    author = models.ForeignKey('auth.User', on_delete=models.CASCADE)
    title = models.CharField(max_length=200)
    text = RichTextField()
    created_date = models.DateTimeField(
        default=timezone.now)
    published_date = models.DateTimeField(
        blank=True, null=True)

    def publish(self):
        self.published_date = timezone.now()
        self.save()

    def __str__(self):
        return self.title

    def get_update_url(self):
        return reverse('post:update', kwargs={'slug': self.slug})

post_detail.html

<a href="{{ post.get_update_url }}" class="btn btn-default" role="button">update</a>

urls.py

...
url(r'^(?P<slug>[\w-]+)/update/$', post_update, name="update"),

我该怎么办？谢谢。

Answer 1

您需要创建一个SlugField，然后编写一个save()函数以基于某个字段创建slug，然后它应该可以正常工作。

from django.utils.text import slugify

class Post(models.Model):
    author = models.ForeignKey('auth.User', on_delete=models.CASCADE)
    title = models.CharField(max_length=200)
    slug = models.SlugField(max_length=40)
    text = RichTextField()
    created_date = models.DateTimeField(
        default=timezone.now)
    published_date = models.DateTimeField(
        blank=True, null=True)

    def publish(self):
        self.published_date = timezone.now()
        self.save()

    def __str__(self):
        return self.title

    # Write the save() method
    def save(self):
        if not self.id:
            self.slug = slugify(self.title)

        super(Post, self).save()

    def get_update_url(self):
        return reverse('post:update', kwargs={'slug': self.slug})

/ post / 106 /中的AttributeError

1 个答案: