改进分页类魔术方法的返回值

library/think/Paginator.php

@@ -395,7 +395,15 @@ abstract class Paginator implements ArrayAccess, Countable, IteratorAggregate, J
 
     public function __call($name, $arguments)
     {
-        return call_user_func_array([$this->getCollection(), $name], $arguments);
+        $collection = $this->getCollection();
+
+        $result = call_user_func_array([$collection, $name], $arguments);
+
+        if ($result === $collection) {
+            return $this;
+        }
+
+        return $result;
     }
 
 }