Adding a related sales order to the calendar event

[Guido1982]

Does anyone have an idea why my variables in Events.php are not passed on to the event in the calendar yet?

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I've been studying the events.php file some more. Basically, the part where fields are added to show in the event is this:

PHP Code:

if ($detailview_permissions) {
    $sql0 = "SELECT * FROM its4you_calendar4you_event_fields WHERE userid = ? AND view = ?";
    $result0 = $adb->pquery($sql0, array($current_user->id,$view));
    $num_rows0 = $adb->num_rows($result0);
    if ($num_rows0 > 0) {
        while($row0 = $adb->fetchByAssoc($result0)) {
            $sql01 = "SELECT uitype, columnname, fieldlabel FROM vtiger_field WHERE fieldname = ? AND tabid IN (?,?)";
            $result01 = $adb->pquery($sql01, array($row0['fieldname'],$calendar_tabid,$events_tabid));
            $columnname = $adb->query_result($result01,0,"columnname");
            $fieldlabel = $adb->query_result($result01,0,"fieldlabel");
            $uitype = $adb->query_result($result01,0,"uitype");
            $Field_data = array("fieldname"=>$row0['fieldname'], "columnname"=>$columnname, "fieldlabel" => $fieldlabel, "uitype"=>$uitype);
            if ($row0['type'] == "1") {
                $Showed_Field[$row0['event']] = $Field_data;
            } else {
                $Event_Info[$row0['event']][] = $Field_data;
            }
        }
    }
} 


I need some better understanding of this, can anyone help me as to what the 'tabid' is in the system? I think I should integrate my sales order connection deeper into the module in stead of 'laying it on top' as I do now. But first I need a better understanding of its inner workings.

Also, I need to understand what the 'type' is in table `its4you_calendar4you_event_fields`. It only says 1 or 2, but I don't know what they represent.