Why is one field out of 12 not saved?

Question

Laravel

In order not to make a footcloth here, I transferred everything to gist.
It is not possible to save the departamen_id field
. All the necessary information comes to the $request of the Update method, but only this field does not get into the database.
How can you find the cause?

Answer 1

Because it's not in the fillable?
Not to mention the fact that departame n _id is sent, but in all other places departamen t _id