Relationship field

I have a module with 2 relationships field (field streetname and field deliverer)
streetname and deliverer have a one to many relationship.

more info: the streetname module has streetname field and a region field.
every region is linked to a deliverer.

So in this module i have the streetname and deliverer field (relationship)
When i enter the streetname i want to get the assigned deliverer.
It doesn’t have to be in realtime. It can be on save.

How can I do it in workflow?

I’m not sure you can do look-ups like that in Workflows. But as always with Workflows, you just go there and try all the options you can find, until it works or you give up :slight_smile:

With a logic hook it would be quite easy, do you know PHP?