Laravel:Error when Implementing JWT authentication - laravel

Question

I am experiencing an error when trying to post the API through Postman to authenticate users in the site.
login function:
public function login(Request $request)
{
$credentials = $request->only('email', 'password');
if ($token = $this->guard()->attempt($credentials)) {
return $this->respondWithToken($token);
}
return response()->json(['error' => 'Unauthorized'], 401);
}
the guard function
public function guard()
{
return Auth::guard();
}
The error shown on postman
"message": "Call to undefined method Tymon\\JWTAuth\\Contracts\\Providers\\Auth::guard()",
"exception": "Symfony\\Component\\Debug\\Exception\\FatalThrowableError",
How to solve this?

Answer 1

You can use \JWTAuth::attempt function in order to get token if the user inserts valid email and password like:
....
use Tymon\JWTAuth\Exceptions\JWTException;
....
try {
$token = \JWTAuth::attempt($request->only('email', 'password'));
return $this->respondWithToken($token);
} catch (JWTException $exception) {
return response()->json([
'status' => false,
'data' => null,
'message' => 'Could not create token'
]);
}
EDIT 1
The above answer you submitted is correct.
try replacing Auth::guard() to Auth::guard('api')
public function guard()
{
return Auth::guard('api');
}
For more information there is a similar issue in GitHub for reference

Answer 2

Use a construct method like
public function __construct(){
auth()->setDefaultDriver('api');
}
and your login function like
public function login(){
$credentials = request(['email', 'password']);
if(!$token = auth()->attempt($credentials)){
return response()->json(['error' => 'Incorrect email/password'], 401);
}
return $this->respondWithToken($token);
}
And comment out your guard function

Answer 3

I have faced this problem continuously. But the solution was when I used bcrypt() on the password.
bcrypt($password);

Answer 4

Use dependency injection and inject the Auth interface into your class. Code example below.
From the Tymon package import the Auth interface.
use Tymon\JWTAuth\Contracts\Providers\Auth;
In your constructor
public function __construct(Auth $auth)
{
$this->_authentication = $auth;
}
Then use the "byCredentials" method
if (! $token = $this->_authentication->byCredentials($credentials))
{
return response()->json(['message' => 'Unauthorized'], 401);
}