Dynamic authenticate key

.gitignore

@@ -3,3 +3,4 @@ composer.lock
 build
 coverage.xml
 .phpunit.result.cache
+.idea

config/config.php

@@ -11,6 +11,17 @@
 
 return [
 
+    /*
+    |--------------------------------------------------------------------------
+    | JWT Authentication Key
+    |--------------------------------------------------------------------------
+    |
+    | You can define a specific key to return user data from the JWT
+    |
+    */
+
+    'identifier' => env('JWT_IDENTIFIER', 'sub'),
+
     /*
     |--------------------------------------------------------------------------
     | JWT Authentication Secret

src/JWT.php

@@ -250,7 +250,7 @@ protected function getClaimsArray(JWTSubject $subject)
     protected function getClaimsForSubject(JWTSubject $subject)
     {
         return array_merge([
-            'sub' => $subject->getJWTIdentifier(),
+            config('jwt.identifier') => $subject->getJWTIdentifier(),
         ], $this->lockSubject ? ['prv' => $this->hashSubjectModel($subject)] : []);
     }
 

src/JWTAuth.php

@@ -60,7 +60,7 @@ public function attempt(array $credentials)
      */
     public function authenticate()
     {
-        $id = $this->getPayload()->get('sub');
+        $id = $this->getPayload()->get(config('jwt.identifier'));
 
         if (! $this->auth->byId($id)) {
             return false;

src/JWTGuard.php

@@ -78,7 +78,7 @@ public function user()
             ($payload = $this->jwt->check(true)) &&
             $this->validateSubject()
         ) {
-            return $this->user = $this->provider->retrieveById($payload['sub']);
+            return $this->user = $this->provider->retrieveById($payload[config('jwt.identifier')]);
         }
     }