Today we will see adding values to a drop down list through Peoplecode. This method becomes essential if you want to dynamically populate the drop down list based on some condition.
The example given here shows what need to be written in the page activate of a secondary page that is called from a grid on the main page. It expects a component variable &rownum that indicates the row on which the code should fire.
Component number &rownum;
/* The component variable for passing the rownum from the standard page to the secondary page */
Local SQL &SQL;
Local Rowset &rset0, &rset1;
Local String &type, &descr;
/* Note the SQL and the Rowset objects */
&rset0 = GetLevel0();
&rset1 = &rset0(1).GetRowset(Scroll.LEVEL1_REC);
/* Getting the level0 and level1 records */
&FLD = &rset1(&rownum).GetRecord(Record.LEVEL1_REC).GetField(Field.LEVEL1_REC_FIELD);
/* Getting the required filed to which the drop down is attached */
&FLD.ClearDropDownList();
/* Clearing all existing values that were with AddDropDownItem() */
&SQL = CreateSQL("SELECT A.TYPE, A.DESCR FROM PS_ABCD_TBL A WHERE A.EFF_STATUS = 'A' AND SOME CONDITION");
/* Creating SQL for fetching values to be added to the drop down */
While &SQL.Fetch(&type, &descr)
&FLD.AddDropDownItem(&type, &descr);
/* Adding each row from the SQL's output to the drop down */
End-While; |
