How to verify that input password matches database hashed password in Laravel 8

Question

How to verify user password from given request in Laravel? How is the password compared to the password hash stored in the database? ** This is my controller **

<?php

namespace App\Http\Controllers;


use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;

class MainController extends Controller
{
    function login1(Request $request){
      $username = $request->input('username');
      $password = $request->input('password');

      

      $data = DB::table('users')->where(['username'=>$username, 'password'=>$password])->first();
      if($data == null){
        echo "error";
    
        $notification = array(
                'message' => 'User does not exist! ',
                'alert-type' => 'error'
            );
            return back()->with($notification);
      }
else{
    
       
            $request->session()->put('user',$data);
            return redirect('dashboard');
      
      
}
}}

Answer 1

like this

$encrypted = Crypt::encrypt('password_name_variable');

Answer 2

Basically, what you want to do is:

1. Queryusers Users with a given username in the table.
2. Check if their hashed password matches the hash of the provided password.

So, you want to first query for users with a given username. Then, after retrieving the user and verifying its existence, you can check if the provided password matches the hashed password on the retrieved model.

public function login(Request $request): Response
{
    $user = User::where('username', $request->get('username'));

    if (!$user || !Hash::check($request->get('password'), $user->password)) {
        return back()->with([
            'message' => '用户名和/或密码不正确。',
            'alert-type' => 'error'
        ]);
    }

    $request->session()->put('user', $user);

    return redirect('dashboard');
}

However, there are built-in functions in Laravel to achieve this, and depending on your needs, it may be simpler to do this:

public function login(Request $request): Response
{
  if (!Auth::attempt(['username' => $request->get('username'), 'password' => $request->get('password')]) {
        return back()->with([
            'message' => '用户名和/或密码不正确。',
            'alert-type' => 'error'
        ]);
    }

    return redirect('dashboard');
}

https://laravel.com/api/8.x/Illuminate/Support/Facades/Auth.html#method_attempt