It does not make a difference, the function still returns an error.
echo $post->ID; returns an ID of the current single post i’m viewing.
I had and idea of making a field, true/false maybe, and assign it to post edit page with location rule. As soon as the post is selected in the Relationship field and page is updated, this true/false is getting the “true” value. Then in the widget, i can use this field in WP_Query as meta_key parameter. The schema looks like this:
Relationship fields in Flexible Content (Page) → True/False field (Post) → Widget.
Do you think something like this is possible using Filters?
I just don’t have another ideas how to sort out the situation.
Thanks again for your help.
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