限制首页轮播图

@@ -24,7 +24,7 @@ class IndexController extends HomeBaseController
         //banner轮播图
 //        $coverImg = cache('coverImg');
 //        if(!$coverImg){
-            $coverImg = $this->getCoverImg(CityCategoryModel::indexImg,3);
+            $coverImg = $this->getCoverImg(CityCategoryModel::indexImg,10);
 //            cache('coverImg',$coverImg);
 //        }
         $this->assign('coverImg',$coverImg);