Use DaneEveritt's shortened query call.

Author: death-droid

app/Http/Controllers/API/UserController.php

@@ -75,11 +75,7 @@ public function list(Request $request)
      */
     public function view(Request $request, $id)
     {
-        if(is_numeric($id)) {
-            $query = Models\User::where('id', $id);
-        } else {
-            $query = Models\User::where('email', $id);
-        }
+        $query = Models\User::where((is_numeric($id) ? 'id' : 'email'), $id);
 
         if (! is_null($request->input('fields'))) {
             foreach (explode(',', $request->input('fields')) as $field) {