Yii2. Where are the files located?

Question

Yii

Where is it more correct to place:
- third-party auxiliary classes (for example, a class for working with images);
- behaviors
- widgets
- actions
Now I have them in
behaviors => common\behaviors
auxiliary classes => common\classes
widgets, actions, components => common\components

Answer 1

Third-party classes are connected through the composer.
If your class is common for the frontend and backend, then place it in common\behaviors (common\actions, common\widgets, etc.), if only for the frontend or only for the backend, then frontend\behaviors or backend\behaviors, respectively.
It is also not necessary to shove widgets, actions, components into one namespace, arrange them in different ones (widgets in common\widgets, actions in common\actions, etc.)