Title: Pass a Select List Value into Functions.php function Tax Query Array
Last modified: August 21, 2016

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# Pass a Select List Value into Functions.php function Tax Query Array

 *  [softprinciples](https://wordpress.org/support/users/softprinciples/)
 * (@softprinciples)
 * [12 years, 6 months ago](https://wordpress.org/support/topic/pass-a-select-list-value-into-functionsphp-function-tax-query-array/)
 * Hoping someone can assist as I am very new to the whole functions.php/wordpress
   coding side of things but I basically have the following use case that I am trying
   to achieve through the use of Gravity Forms plugin as well as some other coding.
 * Use Case: Present a user with a drop-down/select list with a variety of occasions,
   for example:
 * Using WordPress v3.7.1
 *     ```
       <select name="input_1" id="input_1_1">
             <option>Christening</option>
             <option>Birthday</option>
             <option>Wedding</option>
           </select>
       ```
   
 * I also have another drop-down/select list that based on what the user selects
   here, all media library images that have a tag, matching the selection above,
   will only be displayed in the drop-down list. FYI, I have also installed the 
   plugin called **WordPress Media Tags** that has provided me the ability to tag
   all files within my media library.
 * Now, I have the process to filter the media library into my select list but at
   the moment I only know how to hard code the tax_query terms value, that I have
   in my child theme **functions.php** file, which looks like this:
 *     ```
       <?php
   
           add_filter('gform_pre_render_2', 'populate_images');
           function populate_images($form){
   
               foreach($form['fields'] as &$field){
   
                   if($field['type'] != 'select' || strpos($field['cssClass'], 'populate-images') === false)
                       continue;
   
           		$args = array(
           			'post_type' => 'attachment',
           			'post_status' => 'inherit',
           			'order' => 'ASC',
           			'posts_per_page' => -1,
           			'tax_query' => array(
           					array(
           						'taxonomy' => 'media_tag',
           						'terms' => 'wedding', // want to pass value here as a parameter
           						'field' => 'slug',
           					)
           				)
           		);
   
           		$loop = new WP_Query($args);
           		$images = array(array('text' => '-- Select an Image --', 'value' => ' '));
           		foreach ( $loop->posts as $image) {
           		    $images[] = array('text' => $image->post_title, 'value' => wp_get_attachment_url( $image->ID ));
           		}
                   $field['choices'] = $images;
               }
               return $form;
           }
       ```
   
 * As you can see, I have hardcoded the tax_query array terms with the value of ‘
   wedding’, which will return to me all media files with the tag ‘wedding’. This
   I have working.
 * What I am after but unsure how to do, is that I want to pass as a parameter to
   my **populate_images** function, within functions.php, say $term, which will 
   be the value selected from the Occasion’s select/drop-down above, so my new tax_query
   would in actual fact look like:
 *     ```
       'tax_query' => array(
       				array(
       					'taxonomy' => 'media_tag',
       					'terms' => $term, //want to pass value here as a parameter
       					'field' => 'slug',
       				)
       			)
       ```
   
 * So, I am unsure how to link value from select drop-down, pass into populate_images
   as the parameter $term and then have the functions.php file perform a new Wp_Query
   based off $term parameter.
 * If the user, selects ‘birthday’ from drop-down, call populate_images with the
   parameter of ‘birthday’ and present to the user within the second drop-down, 
   all the images with the tag of ‘birthday’.
 * I guess also, if there is a better means of performing what I am after, using
   Gravity Forms plugin above, pls let me know.
 * Hope the above makes sense and really hope someone can point me in the right 
   direction.
 * Thanks.

Viewing 1 replies (of 1 total)

 *  Moderator [keesiemeijer](https://wordpress.org/support/users/keesiemeijer/)
 * (@keesiemeijer)
 * [12 years, 6 months ago](https://wordpress.org/support/topic/pass-a-select-list-value-into-functionsphp-function-tax-query-array/#post-4328302)
 * I’m not familiar with the Gravity Forms plugin but if this is on a taxonomy archive
   page you can get the term data like so:
 *     ```
       // category
       $cat_id   = get_query_var('cat'); // category ID
       $cat_slug = get_query_var('category_name'); // category slug
   
       // tags
       $tag_id   = get_query_var('tag_id'); // tag ID
       $tag_slug = get_query_var('tag'); // tag slug
   
       // custom taxonomy
       $term_slug    = get_query_var( 'term' ); // term slug
       $taxonomyName = get_query_var( 'taxonomy' ); // taxonomy name
   
       // all taxonomies (categories, tags, custom taxonomies)
       $object = get_queried_object();
   
       $term_id       = $object->term_id;
       $term_slug     = $object->slug;
       $term_name     = $object->name;
       $term_taxonomy = $object->taxonomy;
       ```
   

Viewing 1 replies (of 1 total)

The topic ‘Pass a Select List Value into Functions.php function Tax Query Array’
is closed to new replies.

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 1 reply
 * 2 participants
 * Last reply from: [keesiemeijer](https://wordpress.org/support/users/keesiemeijer/)
 * Last activity: [12 years, 6 months ago](https://wordpress.org/support/topic/pass-a-select-list-value-into-functionsphp-function-tax-query-array/#post-4328302)
 * Status: not resolved

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