public function get_description( $context = 'course' ) {

		$key = $this->get( 'meta_key' );

		$student = $this->get_student();
		$name    = $student ? $student->get( 'display_name' ) : __( '[Deleted]', 'lifterlms' );

		$post      = llms_get_post( $this->get( 'post_id' ) );
		$label     = is_a( $post, 'LLMS_Post_Model' ) ? strtolower( $post->get_post_type_label() ) : __( 'quiz', 'lifterlms' );
		$post_name = ( 'course' === $context ) ? $label : sprintf( '%1$s "%2$s"', $label, get_the_title( $this->get( 'post_id' ) ) );

		$string = '';

		switch ( $key ) {

			case '_achievement_earned':
				$string = sprintf( __( '%1$s earned the achievement "%2$s"', 'lifterlms' ), $name, get_the_title( $this->get( 'meta_value' ) ) );

				break;

			case '_certificate_earned':
				$string = sprintf( __( '%1$s earned the certificate "%2$s"', 'lifterlms' ), $name, get_the_title( $this->get( 'meta_value' ) ) );

				break;

			case '_email_sent':
				$string = sprintf( __( 'Email "%1$s" was sent to %2$s', 'lifterlms' ), get_the_title( $this->get( 'meta_value' ) ), $name );

				break;

			case '_enrollment_trigger':
				$string = sprintf( __( '%1$s purchased the %2$s', 'lifterlms' ), $name, $post_name );

				break;

			case '_status':
				if ( 'enrolled' === $this->get( 'meta_value' ) ) {
					$string = sprintf( __( '%1$s enrolled into the %2$s', 'lifterlms' ), $name, $post_name );
				} else {
					$string = sprintf( __( '%1$s unenrolled from the %2$s', 'lifterlms' ), $name, $post_name );
				}

				break;

			case '_is_complete':
				$string = sprintf( __( '%1$s completed the %2$s', 'lifterlms' ), $name, $post_name );

				break;

		}// End switch().

		return $string;

	}