django-config-models

Purpose

This app allows other apps to easily define a configuration model that can be hooked into the admin site to allow configuration management with auditing.

Getting Started

Add config_models to your INSTALLED_APPS list.

Usage

Create a subclass of ConfigurationModel, with fields for each value that needs to be configured:

class MyConfiguration(ConfigurationModel):
    frobble_timeout = IntField(default=10)
    frazzle_target = TextField(defalut="debug")

This is a normal django model, so it must be synced and migrated as usual.

The default values for the fields in the ConfigurationModel will be used if no configuration has yet been created.

Register that class with the Admin site, using the ConfigurationAdminModel:

from django.contrib import admin

from config_models.admin import ConfigurationModelAdmin

admin.site.register(MyConfiguration, ConfigurationModelAdmin)

Use the configuration in your code:

def my_view(self, request):
    config = MyConfiguration.current()
    fire_the_missiles(config.frazzle_target, timeout=config.frobble_timeout)

Use the admin site to add new configuration entries. The most recently created entry is considered to be current.

Configuration

The current ConfigurationModel will be cached in the configuration django cache, or in the default cache if configuration doesn't exist. The configuration and default caches are specified in the django CACHES setting. The caching can be per-process, per-machine, per-cluster, or some other strategy, depending on the cache configuration.

You can specify the cache timeout in each ConfigurationModel by setting the cache_timeout property.

You can change the name of the cache key used by the ConfigurationModel by overriding the cache_key_name function.

Extension

ConfigurationModels are just django models, so they can be extended with new fields and migrated as usual. Newly added fields must have default values and should be nullable, so that rollbacks to old versions of configuration work correctly.

Documentation

The full documentation is at https://django-config-models.readthedocs.org.

License

The code in this repository is licensed under the AGPL 3.0 unless otherwise noted.

Please see LICENSE.txt for details.

Getting Help

If you're having trouble, we have discussion forums at discuss.openedx.org where you can connect with others in the community.

Our real-time conversations are on Slack. You can request a Slack invitation, then join our community Slack workspace.

For anything non-trivial, the best path is to open an issue in this repository with as many details about the issue you are facing as you can provide.

For more information about these options, see the Getting Help page.

How To Contribute

Contributions are very welcome.

Please read How To Contribute for details.

This project is currently accepting all types of contributions, bug fixes, security fixes, maintenance work, or new features. However, please make sure to have a discussion about your new feature idea with the maintainers prior to beginning development to maximize the chances of your change being accepted. You can start a conversation by creating a new issue on this repo summarizing your idea.

Open edX Code of Conduct

All community members are expected to follow the Open edX Code of Conduct.

People

The assigned maintainers for this component and other project details may be found in Backstage. Backstage pulls this data from the catalog-info.yaml file in this repo.

Reporting Security Issues

Please do not report security issues in public. Please email security@openedx.org.