Custom trigger

Question

Hi--
I am inserting into 2 tables sc_tblBioInfo and sc_tblSemesterInfo. I have 2 fields 'Plantoenroll' and 'year' that are inserted into 2 different fields into sc_tblSemesterInfo. That works fine.
I also need to insert 'Plantoenroll' and 'year' combined into 1 field called 'Plantoenroll' in sc_tblBioInfo.
I have created a custom trigger to combine them and insert into sc_tblBioInfo:
function Trigger_Custom(&$tNG) {
$Plantoenroll = $tNG->getColumnValue("Plantoenroll");
$year = $tNG->getColumnValue("year");
$newSubject = $Plantoenroll . $year;
$ins_sc_tblBioInfo->addColumn("Plantoenroll","STRING_TYPE","VALUE",$newSubject);
return null;
I am getting an error "Column Plantoenroll is not part of the current transaction." How do I make Column Plantoenroll part of the current transaction?
Is there a better way to insert 2 fields into a table and also insert those 2 fields as 1 field into a different table?
Thanks for any help.
--rayne

Answer 1

Rayne,
If I understand correctly, you want to insert/update a different table than the table the ADDT form is inserting to.
The form on your page inserts a new record into sc_tblSemesterInfo table. You also want to insert a new value based on combining two fields into one and insert or update the new value in the sc_tblBioInfo table.
Unfortunately, you cannot use:
$ins_sc_tblBioInfo->addColumn("Plantoenroll","STRING_TYPE","VALUE",$newSubject);
to update a different database table than the one the form is associated with.
The correct code would be:
$tNG->addColumn("Plantoenroll","STRING_TYPE","VALUE",$newSubject);
but using this in a trigger only allows you to add Columns to the trasaction database table that the form is inserting to. You cannot tell it to update a different database table like this.
The key question is whether you need to do an Update to an existing record in sc_tblBioInfo, or are you a doing fresh an insert in the sc_tblBioInfo table?
You need to do a custom trigger that does a database call to do an insert or update operation on the sc_tblBioInfotable table. After you combine the values into a new value, are you needing to insert a new record into the sc_tblBioInfotable table, or are you needing to update an existing record in the sc_tblBioInfotable table?
Shane