Several things to this:

• Add an option to mediagoblin.ini that's like:

[mediagoblin] enabled_licenses = ​http://creativecommons.org/licenses/by-sa/3.0/, ​http://creativecommons.org/licenses/by/3.0/, ​http://creativecommons.org/publicdomain/zero/1.0/

• Add an option for "enable_nolicense = false" (false by default) which allows for all rights reserved
• Make CC BY-SA, CC BY, CC0 the default licenses, "disable by default" *-NC *-ND, all rights reserved (which is what the described config above shows)
• Provide a "default license" option. Should default to BY-SA?
• Allow users to select their default license option

And obviously, add appropriate logic to support this!

We just want to "filter out" what license options are permitted. It's okay for things in the database which have a license not in this list to be marked as something else.

We now have a setup so that individual media types have their own migrations and tables. Which means that integrating MediaGoblin.media_data as a separate table that links to the main table should be very possible.

The main things in this ticket are:

• make sure the mediadata for all currently bundled types are written right
• Set up MediaEntry.media_data to pull up the right row from the right table!

The gist of it is:

• design and codify how plugins will get installed, removed and configured
• implement required infrastructure code
• design and codify how plugins will hook into mediagoblin core
• write documentation for plugin authors

The wiki page tracking this is at: ​http://wiki.mediagoblin.org/PluginSystemDesignDocument

This ticket does not cover creating actual hooks in mediagoblin. Either each hook should get tracked separately or we should create a new bug for a bunch of things or something like that.