Yii2 Gallery

Could anyone recommend a Gallery for Yii2 Advanced Application Template with backend and frontend support?

All I find is only Gallery for frontend or thumbnail-ing. There was a good Gallery Manager for Yii 1 but it’s just a backend.

I need to have a gallery for a model that will be managed from backend (add,edit,delete with captions) and displayed in frontend (a main medium image with other small thumbnails with lightbox).

I started to create one but have many questions on, would appreciate if someone could help me for.