how to get id from 1 page to another page in laravel

i have a page to get some data from user, this data will save in first_forms table, but i have other fields in table for next page and they are null.

this is first_forms table :

in this table project_name, customer_name, buyer, response, model will be saved in first step in first page choose.blade.php

this is store function in controller :

FirstForm::create([
   'model' => $request['model'],
   'project_name' => $request['project_name'],
   'customer_name' => $request['customer_name'],
   'buyer' => $request['buyer'],
   'response' => $request['response'],
]);
return view('Form2.firstForm');

as you can see other fields in first_forms table will be null.

after this user redirect to next page firstForm.

now in this page user have to complete other fields like : airflow, tcp, compress_number, ...

i want when user click on submit in this page, new fields in this page save in previous row in first_forms table who complete in previous page, how can i do this ?

i think i have to get id who complete in previous page and update row with new fields in new page, but i don't know haw can i get id and update row.

this is first_forms table when user complete first page :

this is data who complete in first page

in next page that fields who are null, have to be complete in this row.

via Chebli Mohamed