为什么我%2F在生成的条形网址中总是有多余的内容？

当我在终端中将它们打印出来时，所有子弹都在下面正确生成，但是我不知道为什么该URL有多余的 %2F

某处有问题，但我似乎无法发现它

在我看来，我正在使用<a href = "{{ group.get_absolute_url }}">...the。现在，这可行，但会输出上述问题。如果我这样做href = "{% url 'group' group.slug %}会引发一个错误，那就是找不到反向匹配。

示例：组的标题是a groupURL../%2Fgroup/a-group/

在urls.py中

 (r'^/group/(?P<slug>[-\w\d]+)/$', "group"),

模型

class BlogGroup(models.Model):

    title = BleachField()
    image = models.ImageField(upload_to="uploads/group_images", default="uploads/group_images/none/none.jpg")
    created = models.DateTimeField(default = datetime.now)
    slug = models.SlugField(unique = True)

    def __str__(self):

        return self.title

    def get_absolute_url(self):
        return reverse("blog.views.group", kwargs = {'slug':self.slug})

形成

class BlogGroupForm(forms.ModelForm):


    def __init__(self, *args, **kwargs):

        super(BlogGroupForm, self).__init__(*args, **kwargs)
        self.fields["title"].requried = True
        self.fields["image"].required = True
        self.fields["title"].widget = forms.TextInput()

    class Meta:
        model = BlogGroup
        fields = ["title", "image", "slug"]

    def save(self, commit = False):

        instance = super(BlogGroupForm, self).save(commit = False)
        return truncate_slug(instance, BlogGroup)

utils.py

from django.utils.text import slugify
import itertools

def truncate_slug(instance, arg):

    length = arg._meta.get_field('slug').max_length
    instance.slug = original_slug = slugify(instance.title)[:length]

    for x in itertools.count(1):
        if not arg.objects.filter(slug = instance.slug).exists():
            break
        instance.slug = "%s-%d" % (original_slug[:length - len(str(x)) -1], x)
    instance.save()
    return instance