django-closure-tree 0.2.2

Django闭包树模型。

用于创建递归Postgres视图的抽象基类模型。

http://schinckel.net/2016/01/27/django-trees-via-closure-view/

用法

从Node模型继承

from closure_tree.models import Node


class MyNode(Node):
    name = models.CharField(max_length=30)

创建迁移

$ ./manage.py makemigrations

添加创建树闭包的迁移步骤

$ ./manage.py makemigrations --empty myapp

from closure_tree.migrations import CreateTreeClosure

class Migration(migrations.Migration):

    dependencies = [
        ('dummy', '0001_initial'),
    ]

    operations = [
        CreateTreeClosure('MyNode'),
    ]