BP_REST_Topics_Endpoint::prepare_links( WP_Post $post )

	protected function prepare_links( $post ) {
		$base = sprintf( '/%s/%s/', $this->namespace, $this->rest_base );

		// Entity meta.
		$links = array(
			'self'       => array(
				'href' => rest_url( $base . $post->ID ),
			),
			'collection' => array(
				'href' => rest_url( $base ),
			),
			'user'       => array(
				'href'       => rest_url( bp_rest_get_user_url( $post->post_author ) ),
				'embeddable' => true,
			),
		);

		$form_id = (int) bbp_get_topic_forum_id( $post->ID );

		if ( ! empty( $form_id ) ) {
			$form_base      = sprintf( '/%s/%s/', $this->forum_endpoint->namespace, $this->forum_endpoint->rest_base );
			$links['forum'] = array(
				'href'       => rest_url( $form_base . $form_id ),
				'embeddable' => true,
			);
		}

		/**
		 * Filter links prepared for the REST response.
		 *
		 * @param array   $links The prepared links of the REST response.
		 * @param WP_Post $post  Post object.
		 *
		 * @since 0.1.0
		 */
		return apply_filters( 'bp_rest_topic_prepare_links', $links, $post );
	}