Django的MPTT ORDER_BY錯誤

Question

models.py

class Category(MPTTModel): 
    name = models.CharField(max_length=100) 
    slug = models.SlugField(max_length=200, unique=True) 
    parent = models.ForeignKey('self', blank=True, null=True, related_name='child') 
    image = models.ImageField(upload_to='gfx/category/image/', blank=True, null=True) 
    hidden = models.BooleanField(default=1) 
    created = models.DateTimeField(auto_now_add=True) 
    changed = models.DateTimeField(auto_now=True) 

class MPTTMeta: 
    order_insertion_by = ['name',] 

我的觀點：

categories = Category.tree.filter(level__lte=1) 

我將「創造」在我的模板樹的第一級訂單 - 如何做我這樣做？ 我想：

categories = Category.tree.filter(level__lte=1).order_by('-created') 

請幫助...

Answer 1

你沒有父母

from mptt.models import MPTTModel, TreeForeignKey 

parent = TreeForeignKey('self', null=True, blank=True, related_name='children')

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