Don't you know how to do an ajax lookup / response? Auto filling one or more fields Using ajax is ajax 101. Use jquery ajax.

i'm referring purely to updating a data array to the lookup table, not the front end.

before

book_id, language_id
1,          1
1,           2

after

book_id, language_id
1,          2
1,          3
1,          4

one row is deleted (1,1), one remains the same (1,2), two rows are added. I'm asking if Eloquent will do that automatically somehow

Sorry mis-understood question.

great thanks. I did see that somewhere but wasn't quite sure if it was what I needed

will try it out

regards J