TMS-982: Fix exhibition-archive year-filters & search

CHANGELOG.MD

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Fixed
+
+- TMS-982: Fix exhibition-archive year-filters & search
+
 ## [1.9.2] - 2023-09-04
 
 ### Fixed

models/archive-exhibition.php

@@ -300,12 +300,19 @@ public function results() {
         $upcoming_exhibitions = $this->results->upcoming;
 
         $unfiltered_past_exhibitions = array_filter( $this->results->all, [ $this, 'is_past' ] );
-        $past_exhibitions            = $wp_query->posts;
-        $this->results->past         = $past_exhibitions;
+        $past_exhibitions            = array_filter( $wp_query->posts, [ $this, 'is_past' ] );
+        $this->results->past         = $unfiltered_past_exhibitions;
 
-        $results = $is_past_archive ? $unfiltered_past_exhibitions : $upcoming_exhibitions;
+        $results = $is_past_archive ? $past_exhibitions : $upcoming_exhibitions;
         $this->set_pagination_data( count( $results ), $per_page );
 
+        // Use past exhibitions pagination data when archive search is used
+        $found_posts = $wp_query->found_posts;
+        if ( ( self::get_search_query_var() || self::get_year_query_var() ) && $is_past_archive ) {
+            $this->set_pagination_data( $found_posts, $per_page );
+            $results = $past_exhibitions;
+        }
+
         return [
             'result_count'           => count( $current_exhibitions ),
             'past_results_count'     => count( $unfiltered_past_exhibitions ),
@@ -375,8 +382,8 @@ public function years() {
      */
     protected function reorder_main_exhibitions( $items ) {
 
-        // Return original $items array if search or year filter is used
-        if ( self::get_search_query_var() || self::get_year_query_var() ) {
+        // Return original $items array if search or year filter is used, or if page is past archive
+        if ( self::get_search_query_var() || self::get_year_query_var() || self::is_past_archive() ) {
             return $items;
         }