fix(install): check for .env file existence before installation

- Add a check for the presence of the .env file in the root directory
- Update the index method to redirect to the admin page with a default value

Signed-off-by: wolfcode <37436228+wolf-leo@users.noreply.github.com>

app/index/controller/Index.php

@@ -14,6 +14,6 @@ class Index extends BaseController
     public function index(): Redirect
     {
         // 这是项目首页 系统默认跳转后台页面
-        return redirect('/' . Env::get('EASYADMIN.ADMIN', false));
+        return redirect('/' . Env::get('EASYADMIN.ADMIN', 'admin'));
     }
 }

app/index/controller/Install.php

@@ -27,6 +27,9 @@ class Install extends BaseController
         }elseif (!extension_loaded("PDO")) {
             $errorInfo = '当前未开启PDO，无法进行安装';
         }
+        if (!is_file(root_path() . '.env')) {
+            $errorInfo = '.env 文件不存在，请先配置 .env 文件';
+        }
         if (!$request->isAjax()) {
             $currentHost = '://';
             $result      = compact('errorInfo', 'currentHost', 'isInstall');