The way we deploy TRAP and Banana at the University of Amsterdam is that various scientists create multiple PostgreSQL and MonetDB databases and populate these with data. We want to be able to visualise the content of all these databases.
We've created various helper functions (project.settings.database) that assist in automatically populating the Django configuration with our site specific configuration. It is adviced not to use these in production, but rather build a manual configuration.
The database which is used is based on the URL, specifically the URL variable. We've crafted a combination of Django middleware and Django database routing that makes Django use the desired database. Below is the module documentation for that logic.
project.multidb