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A Django app for adding object tools for models in the admin

Project Description

https://travis-ci.org/crccheck/dj-obj-update.svg?branch=master

dj-obj-update is a module that helps you do two things while updating an object:

  1. Only do a save if something changed
  2. Log what changed (the logger name is obj_update and only outputs DEBUG)

Installation

pip install dj-obj-update

Usage

Updating an object

from obj_update import obj_update

new_data = {
    'flavor': 'chocolate',
}
for obj in queryset:
    obj_update(obj, new_data)

Dry run updating an object

from obj_update import obj_update

logger.setLevel(logging.DEBUG)  # see "Logging changes" below

new_data = {
    'flavor': 'chocolate',
}
for obj in queryset:
    obj_update(obj, new_data, save=False)

Replacement for update_or_create

from obj_update import obj_update_or_create

choice, created = obj_update_or_create(
    Choice,
    question=question,
    defaults={'choice_text': 'Flour or corn?'},
)

https://docs.djangoproject.com/en/2.0/ref/models/querysets/#update-or-create

Logging changes

Using python-json-logger:

import logging
from pythonjsonlogger.jsonlogger import JsonFormatter

logger = logging.getLogger('obj_update')
handler = logging.FileHandler('log/my_obj_changes.log')
handler.setFormatter(JsonFormatter())
logger.addHandler(handler)
logger.setLevel(logging.DEBUG)

With JSON logging, you’ll get messages like:

{"message": "[text hello->hello2]", "model": "FooModel", "pk": 1, "changes": {"text": {"old": "hello", "new": "hello2"}}}

With a normal logger, you’ll still get output, but it won’t have as much information:

[text hello->hello2]

Release history Release notifications

This version
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0.3.0

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0.2.1

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0.2.0

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0.1.0

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0.0.0

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