Optimistic lock implementation for Django. Prevents users from doing concurrent editing.
Project description
==================
Django Concurrency
==================
.. image:: https://badge.fury.io/py/django-concurrency.svg
:target: http://badge.fury.io/py/django-concurrency
:alt: PyPI package
django-concurrency is an optimistic lock [1]_ implementation for Django.
Supported Django versions: 1.8.x, 1.9.x, 1.10.x., 1.11.x, 2.x
It prevents users from doing concurrent editing in Django both from UI and from a
django command.
How it works
------------
sample code::
from django.db import models
from concurrency.fields import IntegerVersionField
class ConcurrentModel( models.Model ):
version = IntegerVersionField( )
name = models.CharField(max_length=100)
Now if you try::
a = ConcurrentModel.objects.get(pk=1)
a.name = '1'
b = ConcurrentModel.objects.get(pk=1)
b.name = '2'
a.save()
b.save()
you will get a ``RecordModifiedError`` on ``b.save()``
Similar projects
----------------
Other projects that handle concurrent editing are `django-optimistic-lock`_ and `django-locking`_ anyway concurrency is "a batteries included" optimistic lock management system, here some features not available elsewhere:
* can be applied to any model; not only your code (ie. django.contrib.auth.Group)
* handle `list-editable`_ ChangeList. (handle `#11313 <https://code.djangoproject.com/ticket/11313>`_)
* manage concurrency conflicts in admin's actions
* can intercept changes performend out of the django app (ie using pgAdmin, phpMyAdmin, Toads) (using `TriggerVersionField`_)
* can be disabled if needed (see `disable_concurrency`_)
* `ConditionalVersionField`_ to handle complex business rules
Links
~~~~~
+--------------------+----------------+--------------+------------------------+
| Stable | |master-build| | |master-cov| | |
+--------------------+----------------+--------------+------------------------+
| Development | |dev-build| | |dev-cov| | |
+--------------------+----------------+--------------+------------------------+
| Project home page: |https://github.com/saxix/django-concurrency |
+--------------------+---------------+----------------------------------------+
| Issue tracker: |https://github.com/saxix/django-concurrency/issues?sort |
+--------------------+---------------+----------------------------------------+
| Download: |http://pypi.python.org/pypi/django-concurrency/ |
+--------------------+---------------+----------------------------------------+
| Documentation: |https://django-concurrency.readthedocs.org/en/latest/ |
+--------------------+---------------+--------------+-------------------------+
.. |master-build| image:: https://secure.travis-ci.org/saxix/django-concurrency.svg?branch=master
:target: http://travis-ci.org/saxix/django-concurrency/
.. |master-cov| image:: https://codecov.io/gh/saxix/django-concurrency/branch/master/graph/badge.svg
:target: https://codecov.io/gh/saxix/django-concurrency
.. |master-doc| image:: https://readthedocs.org/projects/django-concurrency/badge/?version=stable
:target: http://django-concurrency.readthedocs.io/en/stable/
.. |dev-build| image:: https://secure.travis-ci.org/saxix/django-concurrency.svg?branch=develop
:target: http://travis-ci.org/saxix/django-concurrency/
.. |dev-cov| image:: https://codecov.io/gh/saxix/django-concurrency/branch/develop/graph/badge.svg
:target: https://codecov.io/gh/saxix/django-concurrency
.. |dev-doc| image:: https://readthedocs.org/projects/django-concurrency/badge/?version=stable
:target: http://django-concurrency.readthedocs.io/en/stable/
.. |wheel| image:: https://img.shields.io/pypi/wheel/django-concurrency.svg
_list-editable: https://django-concurrency.readthedocs.org/en/latest/admin.html#list-editable
.. _django-locking: https://github.com/stdbrouw/django-locking
.. _django-optimistic-lock: https://github.com/gavinwahl/django-optimistic-lock
.. _TriggerVersionField: https://django-concurrency.readthedocs.org/en/latest/fields.html#triggerversionfield
.. _ConditionalVersionField: https://django-concurrency.readthedocs.org/en/latest/fields.html#conditionalversionfield
.. _disable_concurrency: https://django-concurrency.readthedocs.org/en/latest/api.html?#disable-concurrency
.. image:: https://badges.gitter.im/Join%20Chat.svg
:alt: Join the chat at https://gitter.im/saxix/django-concurrency
:target: https://gitter.im/saxix/django-concurrency?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge
Django Concurrency
==================
.. image:: https://badge.fury.io/py/django-concurrency.svg
:target: http://badge.fury.io/py/django-concurrency
:alt: PyPI package
django-concurrency is an optimistic lock [1]_ implementation for Django.
Supported Django versions: 1.8.x, 1.9.x, 1.10.x., 1.11.x, 2.x
It prevents users from doing concurrent editing in Django both from UI and from a
django command.
How it works
------------
sample code::
from django.db import models
from concurrency.fields import IntegerVersionField
class ConcurrentModel( models.Model ):
version = IntegerVersionField( )
name = models.CharField(max_length=100)
Now if you try::
a = ConcurrentModel.objects.get(pk=1)
a.name = '1'
b = ConcurrentModel.objects.get(pk=1)
b.name = '2'
a.save()
b.save()
you will get a ``RecordModifiedError`` on ``b.save()``
Similar projects
----------------
Other projects that handle concurrent editing are `django-optimistic-lock`_ and `django-locking`_ anyway concurrency is "a batteries included" optimistic lock management system, here some features not available elsewhere:
* can be applied to any model; not only your code (ie. django.contrib.auth.Group)
* handle `list-editable`_ ChangeList. (handle `#11313 <https://code.djangoproject.com/ticket/11313>`_)
* manage concurrency conflicts in admin's actions
* can intercept changes performend out of the django app (ie using pgAdmin, phpMyAdmin, Toads) (using `TriggerVersionField`_)
* can be disabled if needed (see `disable_concurrency`_)
* `ConditionalVersionField`_ to handle complex business rules
Links
~~~~~
+--------------------+----------------+--------------+------------------------+
| Stable | |master-build| | |master-cov| | |
+--------------------+----------------+--------------+------------------------+
| Development | |dev-build| | |dev-cov| | |
+--------------------+----------------+--------------+------------------------+
| Project home page: |https://github.com/saxix/django-concurrency |
+--------------------+---------------+----------------------------------------+
| Issue tracker: |https://github.com/saxix/django-concurrency/issues?sort |
+--------------------+---------------+----------------------------------------+
| Download: |http://pypi.python.org/pypi/django-concurrency/ |
+--------------------+---------------+----------------------------------------+
| Documentation: |https://django-concurrency.readthedocs.org/en/latest/ |
+--------------------+---------------+--------------+-------------------------+
.. |master-build| image:: https://secure.travis-ci.org/saxix/django-concurrency.svg?branch=master
:target: http://travis-ci.org/saxix/django-concurrency/
.. |master-cov| image:: https://codecov.io/gh/saxix/django-concurrency/branch/master/graph/badge.svg
:target: https://codecov.io/gh/saxix/django-concurrency
.. |master-doc| image:: https://readthedocs.org/projects/django-concurrency/badge/?version=stable
:target: http://django-concurrency.readthedocs.io/en/stable/
.. |dev-build| image:: https://secure.travis-ci.org/saxix/django-concurrency.svg?branch=develop
:target: http://travis-ci.org/saxix/django-concurrency/
.. |dev-cov| image:: https://codecov.io/gh/saxix/django-concurrency/branch/develop/graph/badge.svg
:target: https://codecov.io/gh/saxix/django-concurrency
.. |dev-doc| image:: https://readthedocs.org/projects/django-concurrency/badge/?version=stable
:target: http://django-concurrency.readthedocs.io/en/stable/
.. |wheel| image:: https://img.shields.io/pypi/wheel/django-concurrency.svg
_list-editable: https://django-concurrency.readthedocs.org/en/latest/admin.html#list-editable
.. _django-locking: https://github.com/stdbrouw/django-locking
.. _django-optimistic-lock: https://github.com/gavinwahl/django-optimistic-lock
.. _TriggerVersionField: https://django-concurrency.readthedocs.org/en/latest/fields.html#triggerversionfield
.. _ConditionalVersionField: https://django-concurrency.readthedocs.org/en/latest/fields.html#conditionalversionfield
.. _disable_concurrency: https://django-concurrency.readthedocs.org/en/latest/api.html?#disable-concurrency
.. image:: https://badges.gitter.im/Join%20Chat.svg
:alt: Join the chat at https://gitter.im/saxix/django-concurrency
:target: https://gitter.im/saxix/django-concurrency?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge
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