Profile: tobiasB-4

Problem: I have a View of a CPT. There will only be 1 result in this View #1. I would like to filter View #2 by taxonomy, where the terms are the same as the terms applied to the results of View 1.

Solution:
Create a duplicate of View 1. In the Loop Output editor, insert the wpv-post-taxonomy shortcode to output the term slugs associated with the post. Use a comma separator. Place this View #3 just before View #2 on the same page. The results should look like this: slug1, slug2, slug3
- Edit View #2. Apply a taxonomy Query Filter, where the term slugs are set by a shortcode attribute. See view-2-filter.png for a similar example. My taxonomy is "Book Taxes" so yours will be a bit different, but the idea is the same.
- Now add the shortcode attribute to the shortcode you used to insert View #2, something like this:

[wpv-view name="view-2-slug" wpvbooktax="term-slug"]

- Test by using a real term slug in the shortcode attribute, and be sure the View is showing the matching results
- Replace the real term slug with the results of View #3 by inserting View #3 shortcode inside the taxonomy shortcode attribute for View #2.
- Add this code to your functions.php file:

add_filter( 'wpv_filter_wpv_view_shortcode_output', 'prefix_clean_view_output', 5, 2 );
 
function prefix_clean_view_output( $out, $id ) {
  $ids = array( 12345 );
  if ( in_array( $id, $ids )) {
    $start = strpos( $out, '<!-- wpv-loop-start -->' );
    if (
      $start !== false
      && strrpos( $out, '<!-- wpv-loop-end -->', $start ) !== false
    ) {
      $start = $start + strlen( '<!-- wpv-loop-start -->' );
      $out = substr( $out , $start );
      $end = strrpos( $out, '<!-- wpv-loop-end -->' );
      $out = substr( $out, 0, $end );
    } else {
      $start = strpos( $out, '>' );
      if ( $start !== false) {
        $out = substr( $out, $start + 1 );
        $end = strpos( $out, '<' );
        $out = trim(substr( $out, 0, $end ));
      }
    }
  }
  return $out;
}

Change "12345" to be the numeric ID of View #3. This code strips the unnecessary markup from the results of View #3 so the slugs can be read by the Query Filter of View #2.

Relevant Documentation:
https://toolset.com/documentation/user-guides/views-shortcodes/#wpv-post-taxonomy
https://toolset.com/documentation/user-guides/passing-arguments-to-views/
https://toolset.com/documentation/user-guides/filtering-views-by-taxonomy/