Answers for "laravel migration collumns"

foreign id laravel migration

$table->unsignedBigInteger('user_id');
$table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');

Laravel Migrations from an existing database

To Generate Laravel Migrations from an existing database.
  
Use the following package.
  
https://github.com/Xethron/migrations-generator

add column migration laravel 8

add migration column laravel