How to add extra logic on login condition in Laravel 5.2

I just wanted to say if the user is not active, don't allow to login. I have made the controller as below, I am not sure what I am missing or what else I have to do here to make this work!

<?php
namespace App\Http\Controllers\Auth;

use Illuminate\Auth\Authenticatable;
use Illuminate\Foundation\Auth\AuthenticatesUsers;
use App\User;
use Validator;
use App\Http\Controllers\Controller;
use Illuminate\Foundation\Auth\ThrottlesLogins;
use Illuminate\Foundation\Auth\AuthenticatesAndRegistersUsers;

class AuthController extends Controller{
    use AuthenticatesAndRegistersUsers, ThrottlesLogins;

    protected $redirectTo = '/home';

    
    public function __construct()
    {
        $this->middleware($this->guestMiddleware(), ['except' => 'logout']);
    }

    
    protected function validator(array $data)
    {
        return Validator::make($data, [
            'name' => 'required|max:255',
            'email' => 'required|email|max:255|unique:users',
            'password' => 'required|min:6|confirmed',
        ]);
    }

    
    protected function create(array $data)
    {
        return User::create([
            'name' => $data['name'],
            'email' => $data['email'],
            'password' => bcrypt($data['password']),
        ]);
    }

    public function authenticate()
    {
        if (Auth::attempt(['email' => $email, 'password' => $password, 'active' => 1])) {
            // Authentication passed...
            return redirect()->intended('dashboard');
        }
    }

}

My thinking was authenticate() method should do the trick!

The below code worked for my case:

protected function getCredentials(Request $request)
    {
        return [
            'email' => $request->input('email'),
            'password' => $request->input('password'),
            'active' => true
        ];
    }

for Laravel 5.3 need to add following code to LoginController

protected function credentials(Request $request)
    {
        return [
            'email' => $request->input('email'),
            'password' => $request->input('password'),
            'active' => true
        ];
    }