Answers for "add timestamp to migrate with after in l;aavel"

laravel add timestamps to existing table

$table->dateTime('created_at')->default(DB::raw('CURRENT_TIMESTAMP'));
$table->dateTime('updated_at')->nullable();

on update current timestamp laravel migration

$table->timestamp('created_at')->default(DB::raw('CURRENT_TIMESTAMP'));
$table->timestamp('updated_at')->default(DB::raw('CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP'));