Is it possible to create a lookup field populated with data from an external database?
For example, I want to create an entity, with a customerId field. The list of customers is stored in a table of an external database, so in my entity edit page I would like to show a lookup field with the customers list.
I know that currently is not possible to define associations between entiies from different datastores. It would be enough for me if I can store the customer Id value in my entity, obtained from this lookup field, but I don’t know how I could do it…