Add Terms => Include_Children and/or Terms checkboxes with 3 states

[EkoJR]

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• Enhance the Admin UI

Possible Issues & Limitations

• Include_Children values true & false would have to be queried separately; which would also be doubled when post_status values are both private & public.
  • This could cause Maximum memory issues.
    • Possible solution: Add dynamic method to APL_Query to manually add terms, and use a unique value or alt array for dynamic terms. However, basic terms with one or the other include_children can bypass this.
  • Admin UI would have to be enhanced to allow checkboxes to have 3 different states.
• OR true & false would be queried separately.

https://wordpress.org/support/topic/include-all-children-of-a-given-category/