yii2中每页来自appasset.php的单个CSS

Question

I am using the yii2 framework and the following code in appasset.php :

public $basePath = '@webroot'; 
public $baseUrl = '@web'; 
public $css = [ 'css/site.css', 'css/country.css', 'css/admin/one.css', 'css/fg/two.css' ]; 
public $js = [ ]; 
public $depends = [ 'yii\web\YiiAsset', 'yii\bootstrap\BootstrapAsset', ];

My page pulls in all of the CSS files listed, but I only want one.css in this page, and to use the other CSS files in other pages.

How can I prevent these other CSS files from appearing in this page? Or - is it possible to create a new appasset.php file for a single php page?

Answer 1

Each specific situation should have its own AssetBundle. You just create as many as you need and include them in the relevant view file:

Existing one:

class AppAssets extends \yii\web\AssetBundle 
{ 
   public $basePath = '@webroot'; 
   public $baseUrl = '@web';
   public $css = ['css/site.css', 'css/country.css', 'css/fg/two.css'];
   ...
}  

Additional one:

class AdminAssetBundle extends \yii\web\AssetBundle 
{ 
   public $basePath = '@webroot'; 
   public $baseUrl = '@web';
   public $css = ['css/admin/one.css'];
   public $depends = ['AppAssets'],
}  

(Please add namespaces where necessary, I left those out)

As said: Then just include the one you need in the view that is relevant. ie. in your admin views you add: AdminAsset::register($this);

Because of the depends , those views will automatically include your AppAssets bundle.

If your AppAssets is the one from the yii app distribution (added by default), it is probably already being registered in the /views/layouts/main.php -file.

That means that it is not required to be defined as a dependency. I do consider it a good practice to keep the dependencies clear (if your admin one.css file actually depends on the ones from AppAssets , if not remove the $depends alltogether).

Yii is smart enough to only include each asset bundle only once anyway.