updated pdf renderer to support zipped output

Backend/models/user.go

@@ -330,6 +330,22 @@ func (u *User) GetFromCardUID(card_uid string) (User, error) {
 	return user, nil
 }
 
+func (u *User) IsSuperior(e User) bool {
+	var isSuperior int
+	qStr, err := DB.Prepare(`SELECT COUNT(1) FROM s_personal_daten WHERE personal_nummer = $1 AND vorgesetzter_pers_nr = $2`)
+	if err != nil {
+		slog.Debug("Error preparing query", "error", err)
+		return false
+	}
+	err = qStr.QueryRow(e.PersonalNummer, u.PersonalNummer).Scan(&isSuperior)
+	if err != nil {
+		slog.Debug("Error executing query", "error", err)
+		return false
+	}
+	return isSuperior == 1
+
+}
+
 func getMonday(ts time.Time) time.Time {
 	if ts.Weekday() != time.Monday {
 		if ts.Weekday() == time.Sunday {