Bloxtor - Create a Stock Manager - Lesson 17 - Allowing multi-level categories within categories

Описание: This video explains how to enable categories within categories, which means we can organize product categories into multiple levels and related products into categories of different levels.
To achieve this, we will modify the categories table so that it points to itself, update the corresponding business logic services, and modify the categories and products pages to allow multi-level categories.

In this video, you will learn how to:
modify an existing database table to allow it to be recursive in relation to itself,
add a new database attribute to existing business logic services,
duplicate business logic services and make some changes, through diagrams and code,
modify existing interfaces to support recursive records that point to each other,
learn how to work with widget dependencies, reloading widgets based on other widgets,
include Javascript widgets on the pages,
debug and fix bugs.

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