Laravel Get Use id with session-CodePudding

Im trying to get the id of the logged in user. When the user is clicking on the button his id need to get send to the data base, But I get an error: 1048 Column 'user_id' cannot be null.

This is my controller function:

    public function LendBook(Request $request)
    {
        $user_id = $request->session()->get('User_id');
        $book_id = $request->book_id;


        $q = new lend;
        $q->user_id = $user_id;
        $q->book_id = $book_id;

        $q->save();

        return 'test';
}
}

CodePudding user response：

here with this you get current user's id

use Illuminate\Support\Facades\Auth;

    $user = Auth::user();
    $user_id = $user->id;

CodePudding user response：

public function LendBook(Request $request)
{
    $user_id = auth()->id;
    $book_id = $request->book_id;

    $q = new Lend; // naming class should be Upper case "Lend"
    $q->user_id = $user_id;
    $q->book_id = $book_id;
    $q->save();

    return 'test';
}

naming class should be Uppercase look the basic php standard (PSR) enter link description here