Answers for "alter table in laravel"

laravel rename table

Schema::rename($currentTableName, $newTableName);

laravel migration update table column type

Schema::table('users', function ($table) {
    $table->string('name', 50)->change();
});
We could also modify a column to be nullable:

Schema::table('users', function ($table) {
    $table->string('name', 50)->nullable()->change();
});