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a guest Jul 16th, 2019 74 Never
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  1. <?php
  2. function ci_admin_posts_filter( $query )
  3. {
  4.     global $pagenow;
  5.     if ( is_admin() && $pagenow=='edit.php' && isset($_GET['ADMIN_SEARCH_FIELD_NAME']) && $_GET['ADMIN_SEARCH_FIELD_NAME'] != '') {
  6.      
  7.          $query->query_vars['meta_value'] = $_GET['ADMIN_SEARCH_FIELD_NAME'];
  8.  
  9.     }
  10. }
  11.  
  12. add_filter( 'parse_query', 'ci_admin_posts_filter' );
  13.  
  14. //////////////////////////////////////////////////////////////////////////////////////////////////////////////
  15.  
  16.  
  17. function ci_admin_posts_filter_restrict_manage_posts()
  18. {
  19.    
  20.     /** Ensure this is the correct Post Type*/
  21.     if($_GET['post_type'] !== 'product')
  22.         return;
  23.        
  24.     global $wpdb;
  25.    
  26.     $sql = 'SELECT  post_title FROM '.$wpdb->posts.' where post_type="manufacturer" ORDER BY post_title asc';  
  27.     $fields = $wpdb->get_results($sql, ARRAY_N);
  28. ?>
  29. <select name="ADMIN_SEARCH_FIELD_NAME">
  30. <option value=""><?php _e('Search By Manufacturers', 'ci'); ?></option>
  31. <?php
  32.     $current = isset($_GET['ADMIN_SEARCH_FIELD_NAME'])? $_GET['ADMIN_SEARCH_FIELD_NAME']:'';
  33.    
  34.     foreach ($fields as $field) {
  35.         if (substr($field[0],0,1) != "_"){
  36.         printf
  37.             (
  38.                 '<option value="%s"%s>%s</option>',
  39.                 $field[0],
  40.                 $field[0] == $current? ' selected="selected"':'',
  41.                 $field[0]
  42.             );
  43.         }
  44.     }
  45. ?>
  46. </select>
  47.  
  48. <?php
  49. }
  50.  
  51. add_action( 'restrict_manage_posts', 'ci_admin_posts_filter_restrict_manage_posts' );
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