当parent.level低于5时隐藏字段？

Question

当mptt.django中的父级别低于5时，如何隐藏字段＆＃34;内容＆＃34;？我希望在后代为5时编辑一个字段。

class Menu(MPTTModel):
name = models.CharField(max_length=50, blank=True, null=True)
content = models.TextField(verbose_name='content')
parent = TreeForeignKey('self', null=True, blank=True, related_name='children')

def __str__(self):
    return self.name

forms.py

class BookAdmin(admin.ModelAdmin):

def get_form(self, request, obj=None, **kwargs):
    if parent and parent.level <= 5:
        self.exclude = ("content", )

我想创造一些想法