WP-API/WP-API

<?php

/**
 * Manage meta values for terms.
 */
class WP_REST_Term_Meta_Fields extends WP_REST_Meta_Fields {
    /**
     * Taxonomy to register fields for.
     *
     * @var string
     */
    protected $taxonomy;
    /**
     * Constructor.
     *
     * @param string $taxonomy Taxonomy to register fields for.
     */
    public function __construct( $taxonomy ) {
        $this->taxonomy = $taxonomy;
    }

    /**
     * Get the object type for meta.
     *
     * @return string
     */
    protected function get_meta_type() {
        return 'term';
    }

    /**
     * Get the type for `register_rest_field`.
     *
     * @return string
     */
    public function get_rest_field_type() {
        return 'post_tag' === $this->taxonomy ? 'tag' : $this->taxonomy;
    }
}