Laravel - Eloquent Detach with Additional Unique (4) Columns

$table->unique(['customer_id','project_id','contact_id','role_id']);

I have a many to many pivot table with given columns above, this allows me to add different contacts, with different roles to different projects etc.... My attach method works fine but I am curious how I can detach, I was planning on providing a link (not a form button) to detach.

Should I set up an "id" column with an increments ( to make it unique for each record) or should i find someway to pass all that related information to method to detach (all four columns) and define it with wherePivot() or where()

What do you guys think?

via Chebli Mohamed