Merge branch 'feature-more-built-in-0.1'

Author: Dobmod

README.md

@@ -7,7 +7,7 @@
 </p>
 
 <p align="center">
-    <a href="https://github.com/php-casbin/laravel-authz/actions">
+    <a href="https://github.com/php-casbin/laravel-authz/actions/workflows/build.yml">
         <img src="https://github.com/php-casbin/laravel-authz/workflows/build/badge.svg?branch=master" alt="Build Status">
     </a>
     <a href="https://coveralls.io/github/php-casbin/laravel-authz">

src/Loaders/LoaderManager.php

@@ -91,12 +91,14 @@ public function createFileDriver()
      */
     protected function createDriver($driver)
     {
+        if(empty($driver)) {
+            throw new InvalidArgumentException('Unsupported empty model loader type.');
+        }
+
         if (isset($this->customCreators[$driver])) {
             return $this->callCustomCreator($driver);
         }
-
         $method = 'create' . Str::studly($driver) . 'Driver';
-
         if (method_exists($this, $method)) {
             return $this->$method();
         }