How to make filters for Collection in MODX admin?

Question

MODX

The Collections component is used to display a list of resources in the admin panel (divided into categories).
It is necessary to add filtering by TV parameters of resources inside the collection, i.e. where in the collection Search by resources, the filter "Published / not ...", here you also need a filter for certain, pre-prepared TV.
How can I do this, is there any manual? Couldn't find anything on the Internet.

Answer 1

Thanks for the answer to Alexey Erokhin!
Add the necessary entries to /assets/components/collections/js/mgr/extra/collections.combo.js in the collections.combo.FilterStatus store.
Modify the /core/components/collections/processors/mgr/resource/getlist.class.php processor so that it can filter by TV in the prepareQueryBeforeCount function (include an invisible column with this TV in the collection settings, then it will be attached immediately to the request)

Answer 2

Look at this www.bxr.cz/blog/collections-enhanced-sort