# Trello ## Backend class For Django, add this class path to `AUTHENTICATION_BACKENDS`. For other integrations, use the same class path in the framework-specific backend setting. | Backend name | Class path | |----------------|-------------------------------------------| | `trello` | `social_core.backends.trello.TrelloOAuth` | Trello provides OAuth1 support for their authentication process. Accounts are associated by Trello’s stable member `id`. Associations created by older social-core releases used `username` and migrate on the next successful authentication. In order to enable it, follow: - Generate an Application Key pair at [Trello Developers API Keys](https://trello.com/1/appKey/generate) - Fill **Consumer Key** and **Consumer Secret** settings: ```default SOCIAL_AUTH_TRELLO_KEY = '...' SOCIAL_AUTH_TRELLO_SECRET = '...' ``` There are also two optional settings: - your app name, otherwise the authorization page will say “Let An unknown application use your account?”: ```default SOCIAL_AUTH_TRELLO_APP_NAME = 'My App' ``` - the expiration period, social auth defaults to ‘never’, but you can change it: ```default SOCIAL_AUTH_TRELLO_EXPIRATION = '30days' ```