Add field to add_term lightbox in taxonomy field ?

• Zek

• September 1, 2019 at 10:06 pm

Somebody know if there is any filter or action to add field to the ajax_add_term modal on a taxonomy field ?

I found the render of the form here:
advanced-custom-fields-pro/includes/fields/class-acf-field-taxonomy.php line 856.

But i don’t find any filter.

• Zek

• September 1, 2019 at 11:47 pm

I found a solution, but I’m sure we can do it cleaner.

In My theme:

## First I add somes helpers

function zk_acf_get_field_groups_by_tax($taxonomy){
    $groups = acf_get_field_groups();
    $filtered_groups = [];
    foreach($groups as $key => $group):
        foreach($group['location'] as $location):
            foreach($location as $location_item){
                if(
                    $location_item['param'] == 'taxonomy' && 
                    $location_item['operator'] == '==' &&
                    $location_item['value'] == $taxonomy
                ){
                    $filtered_groups[] = $group;
                }
            }
        endforeach;
    endforeach;
    return $filtered_groups;
}

function zk_acf_get_fields_by_tax($taxonomy){
    $groups = zk_acf_get_field_groups_by_tax($taxonomy);
    $fields = [];
    foreach($groups as $group){
        $group_fields = acf_get_fields($group['key']);
        if(is_array($group_fields)){
            $fields  = array_merge($fields, $group_fields);
        }
    }
    return $fields;
}

## Then I copy class-acf-field-taxonomy.php in my theme and modify ajax_add_term function

function ajax_add_term() {
		// vars
		$args = wp_parse_args($_POST, array(
			'nonce'				=> '',
			'field_key'			=> '',
			'term_name'			=> '',
			'term_parent'		=> ''
		));
		
		// verify nonce
		if( !acf_verify_ajax() ) {
			die();
		}		
		
		// load field
		$field = acf_get_field( $args['field_key'] );
		if( !$field ) {
			die();
		}
		
		// vars
		$taxonomy_obj = get_taxonomy($field['taxonomy']);
		$taxonomy_label = $taxonomy_obj->labels->singular_name;
		$custom_fields = zk_acf_get_fields_by_tax($field['taxonomy']);

		// validate cap
		// note: this situation should never occur due to condition of the add new button
		if( !current_user_can( $taxonomy_obj->cap->manage_terms) ) {
			wp_send_json_error(array(
				'error'	=> sprintf( __('User unable to add new %s', 'acf'), $taxonomy_label )
			));
		}
		
		// save?
		if( $args['term_name'] ) {
			
			// exists
			if( term_exists($args['term_name'], $field['taxonomy'], $args['term_parent']) ) {
				wp_send_json_error(array(
					'error'	=> sprintf( __('%s already exists', 'acf'), $taxonomy_label )
				));
			}
			
			// vars
			$extra = array();
			if( $args['term_parent'] ) {
				$extra['parent'] = (int) $args['term_parent'];
			}
			
			// insert
			$data = wp_insert_term( $args['term_name'], $field['taxonomy'], $extra );
            
            
            
            
			// error
			if( is_wp_error($data) ) {
				wp_send_json_error(array(
					'error'	=> $data->get_error_message()
				));
			}
			
			// load term
			$term = get_term($data['term_id']);
			foreach($custom_fields as $custom_field){
                $value = $_POST[$custom_field['name']];
                if($value){
                    update_field($custom_field['name'], $value, $term);
                }
            }
            
			// prepend ancenstors count to term name
			$prefix = '';
			$ancestors = get_ancestors( $term->term_id, $term->taxonomy );
			if( !empty($ancestors) ) {
				$prefix = str_repeat('- ', count($ancestors));
			}
		
			// success
			wp_send_json_success(array(
				'message'		=> sprintf( __('%s added', 'acf'), $taxonomy_label ),
				'term_id'		=> $term->term_id,
				'term_name'		=> $term->name,
				'term_label'	=> $prefix . $term->name,
				'term_parent'	=> $term->parent
			));
				
		}
		
		?><form method="post"><?php
		
		acf_render_field_wrap(array(
			'label'			=> __('Name', 'acf'),
			'name'			=> 'term_name',
			'type'			=> 'text'
        ));
        
        foreach($custom_fields as $field){
           acf_render_field_wrap($field); 
            ?>
                <script>
                    acf.add_filter('prepare_for_ajax', function (data) {
                        data['<?php echo $field['name']; ?>'] = jQuery('#acf-<?php echo $field['key']; ?>').val();
                        console.log('data',data);
                        return data;
                    });
                </script>
            <?php
        }
       

		if( is_taxonomy_hierarchical( $field['taxonomy'] ) ) {
			
			$choices = array();
			$response = $this->get_ajax_query($args);
			
			if( $response ) {
				
				foreach( $response['results'] as $v ) { 
					
					$choices[ $v['id'] ] = $v['text'];
					
				}
				
			}
			
			acf_render_field_wrap(array(
				'label'			=> __('Parent', 'acf'),
				'name'			=> 'term_parent',
				'type'			=> 'select',
				'allow_null'	=> 1,
				'ui'			=> 0,
				'choices'		=> $choices
			));
			
		}
		
		
		?><p class="acf-submit">
			<button class="acf-submit-button button button-primary" type="submit"><?php _e("Add", 'acf'); ?></button>
		</p>
		</form><?php
		
		
		// die
		die;	
		
	}