*                      public, points, quiz, drip_method, drip_days, drip_date, prerequisite, audio_embed, video_embed.
	 *                      Added `llms_rest_prepare_lesson_object_response` filter hook.
	 *
	 * @param LLMS_Lesson     $lesson  Lesson object.
	 * @param WP_REST_Request $request Full details about the request.
	 * @return array
	 */
	protected function prepare_object_for_response( $lesson, $request ) {

		$data = parent::prepare_object_for_response( $lesson, $request );

		// Audio Embed.
		$data['audio_embed'] = $lesson->get( 'audio_embed' );

		// Video Embed.
		$data['video_embed'] = $lesson->get( 'video_embed' );

		// Parent section.
		$data['parent_id'] = $lesson->get_parent_section();

		// Parent course.
		$data['course_id'] = $lesson->get( 'parent_course' );

		// Order.
		$data['order'] = $lesson->get( 'order' );

		// Public.
		$data['public'] = $lesson->is_free();

		// Points.
		$data['points'] = $lesson->get( 'points' );

		// Quiz.
		$data['quiz']['enabled']     = llms_parse_bool( $lesson->get( 'quiz_enabled' ) );
		$data['quiz']['id']          = absint( $lesson->get( 'quiz' ) );
		$data['quiz']['progression'] = llms_parse_bool( $lesson->get( 'require_passing_grade' ) ) ? 'pass' : 'completed';

		// Drip method.
		$data['drip_method'] = $lesson->get( 'drip_method' );
		$data['drip_method'] = $data['drip_method'] ? $data['drip_method'] : 'none';

		// Drip days.
		$data['drip_days'] = absint( $lesson->get( 'days_before_available' ) );

		// Drip date.
		$date = $lesson->get( 'date_available' );
		if ( $date ) {
			$time = $lesson->get( 'time_available' );

			if ( ! $time ) {
				$time = '12:00 AM';
			}

			$drip_date = date_i18n( 'Y-m-d H:i:s', strtotime( $date . ' ' . $time ) );
		} else {
			$drip_date = '';
		}

		$data['drip_date'] = $drip_date;

		// Prerequisite.
		$data['prerequisite'] = absint( $lesson->get_prerequisite() );

		/**
		 * Filters the lesson data for a response.
		 *
		 * @since 1.0.0-beta.7
		 *