minor #7912 pass only strings to loadUserByUsername() (xabbuh)

xabbuh · xabbuh · commit 81b8dcff43fc · 2017-05-18T10:31:34.000+02:00
This PR was merged into the 2.8 branch. Discussion ---------- pass only strings to loadUserByUsername() This completes #7065 as since the change made there the `token` key can refer to `null`. Commits ------- a47ed88 pass only strings to loadUserByUsername()
diff --git a/security/guard_authentication.rst b/security/guard_authentication.rst
@@ -186,6 +186,10 @@ This requires you to implement six methods::
         {
             $apiKey = $credentials['token'];
 
+            if (null === $apiKey) {
+                return;
+            }
+
             // if null, authentication will fail
             // if a User object, checkCredentials() is called
             return $userProvider->loadUserByUsername($apiKey);
