protected function get_data( $key, $data ) {

		$quiz = llms_get_post( $data );

		switch ( $key ) {

			case 'actions':
				$value = $this->get_actions_html( $quiz );
				break;

			case 'attempts':
				$query = new LLMS_Query_Quiz_Attempt(
					array(
						'quiz_id'    => $quiz->get( 'id' ),
						'count_only' => true,
					)
				);

				$url   = LLMS_Admin_Reporting::get_current_tab_url(
					array(
						'tab'     => 'quizzes',
						'stab'    => 'attempts',
						'quiz_id' => $quiz->get( 'id' ),
					)
				);
				$value = '<a href="' . $url . '">' . $query->get_count_only_result() . '</a>';

				break;

			case 'average':
				$grade = 0;
				$query = new LLMS_Query_Quiz_Attempt(
					array(
						'quiz_id'  => $quiz->get( 'id' ),
						'per_page' => 1000,
					)
				);

				$attempts = $query->get_number_results();

				if ( ! $attempts ) {
					$value = 0;
				} else {

					foreach ( $query->get_attempts() as $attempt ) {
						$grade += $attempt->get( 'grade' );
					}

					$value = round( $grade / $attempts, llms_get_floats_rounding_precision() ) . '%';

				}

				break;

			case 'course':
				$value  = '&mdash;';
				$course = $quiz->get_course();
				if ( $course ) {
					$url   = LLMS_Admin_Reporting::get_current_tab_url(
						array(
							'tab'       => 'courses',
							'course_id' => $course->get( 'id' ),
						)
					);
					$value = '<a href="' . esc_url( $url ) . '">' . $course->get( 'title' ) . '</a>';
				}
				break;

			case 'id':
				$id    = $quiz->get( 'id' );
				$value = $id;

				$course = $quiz->get_course();
				if ( ! $quiz->is_orphan( true ) && $course ) {

					$url = add_query_arg(
						array(
							'page'      => 'llms-course-builder',
							'course_id' => $course->get( 'id' ),
						),
						admin_url( 'admin.php' )
					);

					$url  .= sprintf( '#lesson:%d:quiz', $quiz->get( 'lesson_id' ) );
					$value = '<a href="' . esc_url( $url ) . '">' . $id . '</a>';
				}
				break;

			case 'lesson':
				$value  = '&mdash;';
				$lesson = $quiz->get_lesson();
				if ( $lesson ) {
					$value = $lesson->get( 'title' );
				}
				break;

			case 'title':
				$value = $quiz->get( 'title' );
				$url   = LLMS_Admin_Reporting::get_current_tab_url(
					array(
						'tab'     => 'quizzes',
						'quiz_id' => $quiz->get( 'id' ),
					)
				);
				$value = '<a href="' . esc_url( $url ) . '">' . $quiz->get( 'title' ) . '</a>';
				break;

			default:
				$value = $key;

		}

		return $this->filter_get_data( $value, $key, $data );
	}