How to modify login verification in laravel to meet customized needs

Laravel is a very popular PHP framework that provides many convenient features for building web applications. Among them, Laravel's own user authentication system is a very basic function for developers when building web applications. By default, Laravel's user authentication system authenticates users when they log in, but sometimes we need to modify it to suit our needs.

In this article, we will introduce how to modify Laravel user login authentication to meet customized needs. We will provide readers with two common scenarios and discuss how to solve these situations:

1. Want to add additional verification conditions when the user logs in;
2. Want to verify that the password has expired after login , if it expires, the user will be required to reset the password.

1. Add additional verification conditions

In Laravel's default user authentication system, users only need to provide the correct email and password to complete the login. But sometimes, we need users to provide additional information for targeted verification.

For example, we require users to provide an answer to a security question to ensure that the user is not a robot. This matching can be done by retrieving the user's stored security questions and answers from the database and then comparing them with the information provided by the user. Here's how to implement this verification:

First, we need to override the login method in LoginController to verify the security question answer. It can be written like this:

public function login(Request $request)
{
    $answer = $request->input('answer');
    $user = User::where('email', $request->email)->first();
  
    if (!$user) {
        return redirect()->route('login')
            ->withInput($request->only('email', 'remember'))
            ->withErrors([
                'email' => 'The provided credentials are incorrect.',
            ]);
    }

    if ($user->isRobot() || $user->answer !== $answer) {
        return redirect()->route('login')
            ->withInput($request->only('email', 'remember'))
            ->withErrors([
                'email' => 'The provided credentials are incorrect.',
            ]);
    }

    if (Auth::attempt(['email' => $request->email, 'password' => $request->password], $request->remember)) {
        return redirect()->intended('/dashboard');
    }

    return redirect()->route('login')
        ->withInput($request->only('email', 'remember'))
        ->withErrors([
            'email' => 'The provided credentials are incorrect.',
        ]);
}

In the above code, we first get the answer provided by the user and then look up the user from the database. If the user does not exist, we immediately jump back to the login page and tell the user that the credentials provided are incorrect.

If the user is marked as a robot, or the answer provided does not match the fields in the database, we also redirect the user back to the login page.

However, if the user passes the security question verification, we will call the Auth::attempt() method to try to log in the user. If the login is successful, we will redirect the user to the page they originally requested.

2. Password expiration verification

If your application requires password expiration checking function, then we can use Laravel's Auth module to check the user password expiration timestamp. If the timestamp indicates that the password has expired, we can ask the user to reset their password.

First, we need to add a password expiration timestamp field in the User model:

protected $dates = ['password_updated_at'];

Then, we need to override hasPasswordExpired( in the Authenticatable interface )Method:

public function hasPasswordExpired()
{
    $expirationDate = Carbon::now()->subDays(config('auth.password_expiration_days'));
    return $this->password_updated_at->lt($expirationDate);
}

In the above code, we first get the current time and the date before the password expiration interval and put it into the expiration variable. We then compare the password update timestamp and expiration date. If the password expiration timestamp is earlier than the expiration date, the password has expired.

Next, we need to update the login() method in LoginController to enable password expiration detection. To do this, we need to add the following code snippet:

public function login(Request $request)
{
    $credentials = $request->only('email', 'password');

    if (Auth::attempt($credentials)) {
        if (Auth::user()->hasPasswordExpired()) {
            Auth::logout();
            return redirect('login')->withErrors(['password' => 'Your password has expired. Please reset it.']);
        }

        return redirect()->intended('/dashboard');
    }

    return redirect('login')->withErrors(['email' => 'Your email or password is incorrect.']);
}

In the above code, if the password expires after the user logs in, we will return a redirect response containing an error message. Users will be forced to perform a password reset to continue using the application.

Summary:

The above are solutions for modifying Laravel user login verification in two common situations. The first case is to add an additional verification condition when the user logs in, we use a security question to verify whether the user is a human. The second situation is to verify whether the password has expired after logging in. If it expires, the user needs to reset the password.

Laravel's default authentication system is very powerful and includes many features and options to meet the needs of different types of applications. By modifying and extending it we can make it fit our specific needs.

The above is the detailed content of How to modify login verification in laravel to meet customized needs. For more information, please follow other related articles on the PHP Chinese website!