django-reversion-compare 0.1.0.beta.0508

========================
django-reversion-compare
========================

**django-reversion-compare** is an extension to `django-reversion <https://github.com/etianen/django-reversion/>`_ that provides a history compare view to compare two versions of a model which is under reversion.

Comparing model versions is not a easy task. Maybe there are different view how this should looks like.
This project will gives you a generic way to see whats has been changed.

Many parts are customizable by overwrite methods or subclassing, see above.

------------
installation
------------

Just use:

::

pip install django-reversion-compare

setup
=====

Add **reversion_compare** to **INSTALLED_APPS** in your settings.py, e.g.:

::

INSTALLED_APPS = (
'django...',
...
'reversion', # https://github.com/etianen/django-reversion
'reversion_compare', # https://github.com/jedie/django-reversion-compare
...
)

usage
=====

Inherit from **CompareVersionAdmin** instead of **VersionAdmin** to get the compare feature.

admin.py e.g.:

::

from django.contrib import admin
from reversion_compare.admin import CompareVersionAdmin

from my_app.models import ExampleModel

class ExampleModelAdmin(CompareVersionAdmin):
pass

admin.site.register(ExampleModel, ExampleModelAdmin)

customize
=========

It's possible to change the look for every field or for a entire field type.
You must only define a methods to your admin class with this name scheme:

* ``"compare_%s" % field_name``

* ``"compare_%s" % field.get_internal_type()``

If there exist no method with this name scheme, the ``fallback_compare()`` method would be used.

example for specify a compare method for a model field by name:

::

class YourAdmin(CompareVersionAdmin):
def compare_foo_bar(self, obj_compare):
""" compare the foo_bar model field """
return "%r <-> %r" % (obj_compare.value1, obj_compare.value2)

----
test
----

We ship a simple test project. To use this, do this steps:

::

$ cd path/to/django-reversion-compare/reversion_compare_test_project/
django-reversion-compare/reversion_compare_test_project$ ./reset.sh # creates test.db3 with syncdb and run createsuperuser
django-reversion-compare/reversion_compare_test_project$ ./manage.py runserver --traceback

See, also: `reversion_compare_test_project <http://github.com/jedie/django-reversion-compare/tree/master/reversion_compare_test_project>`_

-----------
screenshots
-----------

----

|django-reversion-compare_v0_1_0-01.png|

.. |django-reversion-compare_v0_1_0-01.png| image:: http://www.pylucid.org/media/pylucid.org/screenshots_PyLucid/django-reversion/django-reversion-compare_v0_1_0-01.png

----

|django-reversion-compare_v0_1_0-02.png|

.. |django-reversion-compare_v0_1_0-02.png| image:: http://www.pylucid.org/media/pylucid.org/screenshots_PyLucid/django-reversion/django-reversion-compare_v0_1_0-02.png

----

|django-reversion-compare_v0_1_0-03.png|

.. |django-reversion-compare_v0_1_0-03.png| image:: http://www.pylucid.org/media/pylucid.org/screenshots_PyLucid/django-reversion/django-reversion-compare_v0_1_0-03.png

----

---------
changelog
---------

* v0.1.0 - 08.05.2012:

* First release

* v0.0.1 - 08.05.2012:

* collect all compare stuff from old "diff" branch

* see also: `https://github.com/etianen/django-reversion/issues/147 <https://github.com/etianen/django-reversion/issues/147>`_

-----
Links
-----

+-----------------+----------------------------------------------------------+
| IRC | `#pylucid on freenode.net`_ |
+-----------------+----------------------------------------------------------+
| Github | `http://github.com/jedie/django-reversion-compare`_ |
+-----------------+----------------------------------------------------------+
| Python Packages | `http://pypi.python.org/pypi/django-reversion-compare/`_ |
+-----------------+----------------------------------------------------------+

.. _#pylucid on freenode.net: http://www.pylucid.org/permalink/304/irc-channel
.. _http://github.com/jedie/django-reversion-compare: http://github.com/jedie/django-reversion-compare
.. _http://pypi.python.org/pypi/django-reversion-compare/: http://pypi.python.org/pypi/django-reversion-compare/