add all user ids for one product - laravel

Question

For adding to cart customer has to logg in,in cart table I have a column for user_id but in user_id column all of user_id in database add!for example for product1 all user1,user2,user3 ides add not just the one logged in
cart table:
Schema::create('cart', function (Blueprint $table) {
$table->increments('id');
$table->integer('product_id');
$table->char('user_id');
$table->string('session_id');
$table->string('product_name');
$table->string('user_email');
$table->integer('qty');
$table->integer('product_price');
$table->timestamps();
});
addToCart method in controller:
public function addtocart(Request $request){
$data = $request->all();
if (empty($data['user_email'])){
$data['user_email'] = ' ';
}
$user_id = User::get('id');
if (empty($user_id)){
$user_id = Auth::user()->id;
}
$session_id = Session::get('session_id');
if (empty($session_id)){
$session_id = Str::random(40);
Session::put('session_id' , $session_id);
}
DB::table('cart')->insert(['product_id' => $data['product_id'] , 'product_name' => $data['product_name'], 'user_id'=>$user_id,
'product_price' => $data['product_price'], 'qty' => $data['qty'], 'user_email' => $data['user_email'] , 'session_id' => $session_id ]);
return redirect('cart');
}
what is the problem?

Answer 1

You are currently requesting all the user ids by doing $user_id = User::get('id'); so if you want to set user_id as your authenticated user id you need to replace:
$user_id = User::get('id');
if (empty($user_id)){
$user_id = Auth::user()->id;
}
by:
$user_id = Auth::user()->id;
or shorter version:
$user_id = Auth::id();