wagtail 中的嵌套类别/InlinePanel

我很难实现“嵌套类别”之类的东西：

PageA:
  - Cat1
    - SubCat1
    - SubCat2
    - ...
  - Cat2
    - SubCat1
  - ...

所有类别和子类别都应可由编辑排序和编辑。

我的猜测是这样的：

class CategoryTestPage(Page):
    content_panels = Page.content_panels + [
        InlinePanel('categories')
    ]


class Category(Orderable,ClusterableModel,models.Model):
    page = ParentalKey(CategoryTestPage, related_name='category')
    category = models.CharField(max_length=250)

    def __str__(self):
        return "%d %s" % (self.id, self.category)

    panels = [
            FieldPanel('category'),
            InlinePanel('subcategory')
    ]

class SubCategory(Orderable,models.Model):
    category = ParentalKey(ProjektOrdnung, related_name='subcategory')
    subcategory = models.CharField(max_length=250)

    def __str__(self):
        return "%d %s" % (self.id, self.subcategory)

    panels = [
            FieldPanel('subcategory')
    ]

但这导致'CategoryForm' object has no attribute 'formsets'。看起来是嵌套的InlinePanel问题是什么？

此外，我需要这种“层次分类法”来将其中一些类别/子类别分配给其他页面：

PageB:
    - has Cat1
      - has SubCa2
    - ...

...看起来很像分层标签...

有什么想法如何实现这个或者我的实现有什么问题吗？

亲切的问候， 通布赖特

PS：我使用的是 wagtail 1.2rc1

这是一种方法，界面改进有很大空间；）为了在页面级别对类别进行排序，我建议使用django-sortedm2m https://github.com/gregmuellegger/django-sortedm2m.

from wagtail.wagtailcore.models import Orderable, Page
from wagtail.wagtailsnippets.models import register_snippet
from django.db import models


@register_snippet
class Category(models.Model):
    name = models.CharField(
        max_length=80, unique=True, verbose_name=_('Category Name'))
    slug = models.SlugField(unique=True, max_length=80)
    parent = models.ForeignKey(
        'self', blank=True, null=True, related_name="children",
        help_text=_(
            'Categories, unlike tags, can have a hierarchy. You might have a '
            'Jazz category, and under that have children categories for Bebop'
            ' and Big Band. Totally optional.')
    )
    description = models.CharField(max_length=500, blank=True)

    class Meta:
        ordering = ['name']
        verbose_name = _("Category")
        verbose_name_plural = _("Categories")

    panels = [
        FieldPanel('name'),
        FieldPanel('parent'),
        FieldPanel('description'),
    ]

    def __str__(self):
        return self.name

    def clean(self):
        if self.parent:
            parent = self.parent
            if self.parent == self:
                raise ValidationError('Parent category cannot be self.')
            if parent.parent and parent.parent == self:
                raise ValidationError('Cannot have circular Parents.')

    def save(self, *args, **kwargs):
        if not self.slug:
            self.slug = slugify(self.name)
        return super(Category, self).save(*args, **kwargs)


class CategoryPage(models.Model):
    category = ParentalKey('Category', related_name="+", verbose_name=_('Category'))
    page = ParentalKey('MyPage', related_name='+')
    panels = [
        FieldPanel('category'),
    ]


class MyPage(Page):
    categories = models.ManyToManyField(Category, through=CategoryPage, blank=True)
    content_panels = Page.content_panels + [
        FieldPanel('categories'),
    ]