I have a very complex situation where I need some advice. I have a content type
my_content, which has a field collection field attached to it
field_mycollection, which has an entity reference field referencing to user
field_my_userreference, a phone field
field_my_phone, a text field
field_my_text, and another text field
My Content |_ field_mycollection |_ field_my_userreference |_ field_my_phone |_ field_my_text |_ field_my_anothertext
The user entity has also have fields
field_my_yetanothertext which the latter has a different machine name.
What I want to do, if in
my_content edit/add form, in
field_my_userreference a user is selected, the other fields should be auto-populated from the selected user's data. The auto-populated fields should still be editable.
How could I achieve this goal? I'd like to do it, if possible, with some coding, using