php - access session or Yii in config file -

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i want access session or yii::$app in config file ( config/main.php or config/main-local.php) !
possible or not?
want check session , make style available!

'components' => [     'assetmanager' => [         'assetmap' => [             'r.css' => yii::$app->session['lang'] ? 'css/styleltr.css' : 'css/stylertl.css' ,         ],     ],

or how in assetmanager????

you can't access user session in config file. but, use conditional in layout , register different assets based on session values.


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