protected function get_data( $key, $attempt ) {

		switch ( $key ) {

			case 'quiz':
				$quiz = $attempt->get_quiz();
				if ( $quiz ) {
					$value = $quiz->get( 'title' );

					// Add link to quiz attempts if user has permission
					if ( current_user_can( 'edit_post', $quiz->get( 'id' ) ) ) {
						$url   = LLMS_Admin_Reporting::get_current_tab_url(
							array(
								'tab'     => 'quizzes',
								'stab'    => 'attempts',
								'quiz_id' => $quiz->get( 'id' ),
							)
						);
						$value = '<a href="' . esc_url( $url ) . '">' . esc_html( $value ) . '</a>';
					}
				} else {
					$value = __( '[Deleted Quiz]', 'lifterlms' );
				}
				break;

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

			case 'lesson':
				$quiz = $attempt->get_quiz();
				if ( $quiz ) {
					$lesson = $quiz->get_lesson();
					if ( $lesson ) {
						$value = $lesson->get( 'title' );
					} else {
						$value = __( '[Deleted Lesson]', 'lifterlms' );
					}
				} else {
					$value = '&ndash;';
				}
				break;

			case 'attempt':
				$value = '#' . $attempt->get( $key );
				break;

			case 'grade':
				$value      = $attempt->get( $key ) ? $attempt->get( $key ) . '%' : '0%';
				$additional = $attempt->l10n( 'status' );
				if ( $attempt->can_be_resumed() && $attempt->is_last_attempt() ) {
					$additional .= ' - ' . esc_html__( 'Can be resumed', 'lifterlms' );
				}
				$value .= ' (' . $additional . ')';
				break;

			case 'start_date':
			case 'end_date':
				$value = '&ndash;';
				$date  = $attempt->get( $key );
				if ( $date ) {
					$value = date_i18n( get_option( 'date_format' ) . ' ' . get_option( 'time_format' ), strtotime( $date ) );
				}
				break;

			case 'id':
				$value = sprintf( '%2$d (%1$s)', $attempt->get_key(), $attempt->get( 'id' ) );

				$url = LLMS_Admin_Reporting::get_current_tab_url(
					array(
						'tab'        => 'quizzes',
						'stab'       => 'attempts',
						'quiz_id'    => $attempt->get( 'quiz_id' ),
						'attempt_id' => $attempt->get( 'id' ),
					)
				);

				$value = '<a href="' . esc_url( $url ) . '">' . $value . '</a>';
				break;

			default:
				$value = $key;

		}// End switch().

		return $value;
	}