The juju charm of mongodb does have support for which relations? Is possible to make a relation between rails and mongodb?
If you check out the
Requires section of the charm's web page:
So unfortunately at this time the Rails charm only supports mysql, which is a shame because the mongodb charm is pretty sophisticated.
We'd need someone to add mongodb support to the charm via hooks, and there need to be relation hooks in mongodb for rails, the documentation on how to do that is here.
I have an interest in getting as many databases supported in the Rails charm as possible, but unfortunately Rails expertise in Ubuntu itself is usually shorthanded, if you or anyone is interested in working on it please ping me directly via my contact information.