Python-сообщество

from django.db import models
from mptt.models import MPTTModel

class Rubricator(MPTTModel):
    parent = models.ForeignKey('self', null=True, blank=True, related_name='children')
    name  = models.CharField(max_length=50)
    
     class Meta:
        ordering = ('tree_id', 'lft')

class Template(models.Model):
    name       = models.CharField(max_length = 255, unique = True)
    descr       = models.TextField(blank = True)
    rubricator = models.ForeignKey(Rubricator)

class RubricatorAdmin(MPTTModelAdmin):
    search_fields = ['name']
    def formfield_for_foreignkey(self, db_field, request, **kwargs): # это что бы при добавлении/изменении рубрики список выбора из поля parent был в виде дерева
        field = super(RubricatorAdmin, self).formfield_for_foreignkey(db_field, request, **kwargs)
        if db_field.name == 'parent':
            field.choices = [('','---------')]
            for rubric in Rubricator.objects.all():
                field.choices.append((rubric.pk, '+--'*(rubric.level) + rubric.name))
        return field

class TemplateAdmin(admin.MidelAdmin):
    search_fields = ['name']