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توضیحات

Utilities for implementing Modified Preorder Tree Traversal with your Django Models and working with trees of Model instances.

ویژگی	مقدار
سیستم عامل	-
نام فایل	django-mptt-0.9.1
نام	django-mptt
نسخه کتابخانه	0.9.1
نگهدارنده	[]
ایمیل نگهدارنده	[]
نویسنده	Craig de Stigter
ایمیل نویسنده	craig.ds@gmail.com
آدرس صفحه اصلی	https://github.com/django-mptt/django-mptt/
آدرس اینترنتی	https://pypi.org/project/django-mptt/
مجوز	MIT-License

========================================== **This project is currently unmaintained** ========================================== Alternatives to django-mptt include: * `django-treebeard <https://pypi.org/project/django-treebeard/>`_ includes a MPTT implementation (called nested set), but the state of maintenance is unclear. * Maybe you do not need MPTT, especially when using newer databases. See `django-tree-queries <https://github.com/matthiask/django-tree-queries>`_ for an implementation using recursive Common Table Expressions (CTE). See the `announcement blog post <https://406.ch/writing/django-tree-queries/>`__. =========== django-mptt =========== Utilities for implementing Modified Preorder Tree Traversal with your Django Models and working with trees of Model instances. .. image:: https://secure.travis-ci.org/django-mptt/django-mptt.svg?branch=master :alt: Build Status :target: https://travis-ci.org/django-mptt/django-mptt Project home: https://github.com/django-mptt/django-mptt/ Documentation: https://django-mptt.readthedocs.io/ Discussion group: https://groups.google.com/forum/#!forum/django-mptt-dev What is Modified Preorder Tree Traversal? ========================================= MPTT is a technique for storing hierarchical data in a database. The aim is to make retrieval operations very efficient. The trade-off for this efficiency is that performing inserts and moving items around the tree is more involved, as there's some extra work required to keep the tree structure in a good state at all times. Here are a few articles about MPTT to whet your appetite and provide details about how the technique itself works: * `Trees in SQL`_ * `Storing Hierarchical Data in a Database`_ * `Managing Hierarchical Data in MySQL`_ .. _`Trees in SQL`: https://www.ibase.ru/files/articles/programming/dbmstrees/sqltrees.html .. _`Storing Hierarchical Data in a Database`: https://www.sitepoint.com/hierarchical-data-database/ .. _`Managing Hierarchical Data in MySQL`: http://mikehillyer.com/articles/managing-hierarchical-data-in-mysql/ What is ``django-mptt``? ======================== ``django-mptt`` is a reusable Django app which aims to make it easy for you to use MPTT with your own Django models. It takes care of the details of managing a database table as a tree structure and provides tools for working with trees of model instances. Requirements ------------ * Python 3.6+ * A supported version of Django (currently 2.2+) Feature overview ---------------- * Simple registration of models - fields required for tree structure will be added automatically. * The tree structure is automatically updated when you create or delete model instances, or change an instance's parent. * Each level of the tree is automatically sorted by a field (or fields) of your choice. * New model methods are added to each registered model for: * changing position in the tree * retrieving ancestors, siblings, descendants * counting descendants * other tree-related operations * A ``TreeManager`` manager is added to all registered models. This provides methods to: * move nodes around a tree, or into a different tree * insert a node anywhere in a tree * rebuild the MPTT fields for the tree (useful when you do bulk updates outside of django) * `Form fields`_ for tree models. * `Utility functions`_ for tree models. * `Template tags and filters`_ for rendering trees. * `Admin classes`_ for visualizing and modifying trees in Django's administration interface. .. _`Form fields`: https://django-mptt.readthedocs.io/en/latest/forms.html .. _`Utility functions`: https://django-mptt.readthedocs.io/en/latest/utilities.html .. _`Template tags and filters`: https://django-mptt.readthedocs.io/en/latest/templates.html .. _`Admin classes`: https://django-mptt.readthedocs.io/en/latest/admin.html

نیازمندی

مقدار	نام
-	django-js-asset
-	coverage
-	mock-django

زبان مورد نیاز

مقدار	نام
>=3.6	Python

نحوه نصب

نصب پکیج whl django-mptt-0.9.1:

pip install django-mptt-0.9.1.whl

نصب پکیج tar.gz django-mptt-0.9.1:

pip install django-mptt-0.9.1.tar.gz