在类别中显示Django子类别，在每个类别中显示产品json为json子类别

Hi in my Django oscar project which Implements Django oscar. I am able to implement my custom API which I use to view categories and display them. The issue with the API now is that subcategories of a category appear in my API view as categories and I would like them to be in an array indicating that they are subcategories. My categories code is as follows Hi in my Django oscar project which Implements