magento 2 get first level category from current catgeory ID in controller

Question

I am trying to get first level category from current category ID in my controller . For example- I have

• Maincategory

  • SubCategory1

    • SubCategory2

      • SubChild1

      • SubChild2.

I want to access Maincategory in my controller whether my current catgeory id is SubChild1 or it's SubCategory1.

How can I do this?

Answer 1

Please try with add below code in your controller to get using your category id to get all parent categories..

$category = $categoryFactory->create()->load($categoryId);
$parentCategories = $category->getParentCategories();