YII2 AssetBundle 不同的页面加载不一样的前端文件 [ 新手入门 ]

有2需求 1、我有页面 index.php?r=site/index 还有 index.php?r=site/error 等多个页面 如果每个页面加载的前端文件都一样会非常浪费资源，另外有些前端文件会彼此影响可能还出现错误，这该如何是好？ 如何让这些页面根据需要去加载前端文件呢？

2、另外我还想在用 composer 更新我系统的时候，这些前端文件也跟着更新？这该如何是好？

可行方案举例

backend/asset/Myasset.php

<?php
namespace backend\assets ;

use yii\base\Exception;
use yii\web\AssetBundle as BaseAdminLteAsset;
 
class Myasset extends BaseAdminLteAsset
{
    public $sourcePath = '@bower';
    public $css = [
        'bootstrap/dist/css/bootstrap.min.css',
    ];
    public $js = [];
    public $depends = [
        'backend\assets\AppAsset',
        'backend\assets\YiiAsset',
    ];
 
    /**
     * @inheritdoc
     */
    public function init()
    {
        $action_id = \Yii::$app->controller->action->id ;
        if ($action_id =='error') {
            $this->depends[] = 'backend\assets\ErrorAsset';
        } else {
            $this->depends[] = 'backend\assets\CssJsAsset';
        }

        parent::init();
    }
}

?>

backend/asset/ErrorAsset.php

<?php
namespace backend\assets ;

use yii\web\AssetBundle;
 
class ErrorAsset extends AssetBundle
{
    public $sourcePath = '@bower';
    public $css = [
        'font-awesome/css/font-awesome.min.css',
    ];
    public $js =[
        'adminedd/dist/js/111.js',
        'adminedd/dist/js/222.js',
    ];
}
?>

backend/asset/CssJsAsset.php

<?php
namespace backend\assets ;

use yii\web\AssetBundle;
 
class CssJsAsset extends AssetBundle
{
    public $sourcePath = '@bower';
    public $css = [
        'font-awesome/css/font-awesome.min.css',
		'font-awesome/css/ssddd.css',
    ];
    public $js =[
        'adminedd/dist/js/111.js',
        'adminedd/dist/js/222.js',
		'adminedd/dist/js/444.js',
		'adminedd/dist/js/444.js',
    ];
}
?>

backend/views/layouts/main.php

<?php 
...
backend\assets\Myasset::register($this);
...
?>

前端工具直接都下载到 @bower (vendor/bower) 文件夹下

composer.json

...
  "require": {
    "php": ">=5.4.0",
    "yiisoft/yii2": ">=2.0.6",
 
 
    "bower-asset/Font-Awesome": "*",
    "bower-asset/ionicons": "*"
  },
...

注：跟着测试有问题留言