Question 274775 in PHP Question posted in
Official manual can be found here.

Php – In Yii2 how can I use a class in the root folder?

I would like to use my class rootfolder/assets/AppAsset.php from my backend class rootfolder/backend/views/layouts/view.php however I can’t seem to reference it.

I cannot do assetsAppAsset, ....assetsAppAssets

Is there a way I can use this class that is inside the root folder from my backend app?

My project stucture is

RootFolder/
    backend/
    assets/AppAsset
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2

Answers


  1. Chosen as BEST ANSWER
    0

    I fixed this by putting this in my PSR-4 in composer.json

    "autoload-dev": {
        "psr-4": {
            "myAlias\": "./",
        }
    },

    Then inside of my root file I can do use myAliasassetsAppAsset; and I can do the same in the backend and it gets both fine without having to do any if statements on the namespace.


  2. 0

    According to the docs your class definition must be PSR-4 compliant. Therefore you must define the right namespace in your class definition. For example like this:

    namespace appassets;

class AppAssets
{

}

    Then you could reference the class by using

    use appassetsAppAsset

AppAsset::register($this);

...

    When using the Basic Project Template, you may put your classes under the top-level namespace app so that they can be autoloaded by Yii without the need of defining a new alias. This is because @app is a predefined alias, and a class name like appcomponentsMyClass can be resolved into the class file AppBasePath/components/MyClass.php, according to the algorithm just described.

    In the Advanced Project Template, each tier has its own root alias. For example, the front-end tier has a root alias @frontend, while the back-end tier root alias is @backend. As a result, you may put the front-end classes under the namespace frontend while the back-end classes are under backend. This will allow these classes to be autoloaded by the Yii autoloader.

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