django-logging-middleware

What is django-logging-middleware good for

Django-logging-middleware provides you comfort of preserving history of changes in specified actions for specied models. Theese change history records contains who

• commited a change
• what action was triggered
• when was change made
• what was changed.

With this knowledge you can revert any changes made on selected model. Althrough you have to write revert mechanism yourself.

Example: how to use django-logging-middleware

simplest usage of logging middleware is put something like this into your api

    myobj = MyModel.objects.all()[0]
    with mlogging.Log(request, {"myobj": myobj}):
        myobj.someattribute = "another value"

or manually:

    myobj = MyModel.objects.all()[0]
    old_obj = {"someattribute": myobj.someattribute, "id": myobj.someattribute}
    myobj.someattribute = "another value"
    new_obj = {"someattribute": myobj.someattribute, "id": myobj.someattribute}
    mlogging.add_changeset_entry(request, "my_action,
                                [ContentType.objects.get_for_model(MyModel)],
                                {"myobj": old_obj},
                                {"my_model": new_obj})

Including django-logging-middleware into your project

Django-logging-middleware is designed as django app because custom db models. To use it in your project, simply clone this repository and put mlogging directory into your django app directory and modify settings:

    INSTALLED_APPS = (
    ....
    "mlogging"
    )

    MIDDLEWARE_CLASSES = (
    ....
    "mlogging.middle.LoggingMiddleware"
    )

Notes

If you decide use Log context manager, you can specify exclude_fields for each objects to prevent store excluded fields into db. By default context manager Log store all fields of objects

    with mlogging.Log(request, {"myobj": myobj},
                     exclude_fields={"myobj": ["not_this field"]}):