To pass the selected data to a variable from the drop down list in abap wd

Question

Hi,
I have already created a drop down list and populated it with data from table by using the node and linking it with the internal table. Now I need to know which element is selected so based on that I need to perform some function. eg. based on the selected data , i need to populate the next drop down list.
A demo code will be really helpful.
Thanks and Regards
Tenzin

Answer 1

Hi,
On selcting the value from the drop down, we have one event ONSELECT.
Write the code in this event.
Get the attribute value to lV_xxxxxx using get attribute.
then using that you can fill the next DDBK attribute.
method wddoinit .
  data:
        lo_nd_spfli type ref to if_wd_context_node,
        lo_el_spfli type ref to if_wd_context_element,
        ls_spfli type wd_this->element_spfli.
  data:
      lv_carrid LIKE ls_sflight-carrid,
         itab_carrid type wd_this->elements_spfli,
         wa_carrid type wd_this->element_spfli,
         lo_nodeinfo_spfli type ref to if_wd_context_node_info,
         lt_value_set type wdy_key_value_table,
         ls_value_set type wdy_key_value.
  lo_nd_spfli = wd_context->get_child_node( name = wd_this->wdctx_spfli ).
  lo_nodeinfo_spfli = lo_nd_spfli->get_node_info( ).
  select carrid
    from spfli
    into corresponding fields of table itab_carrid.
  if sy-subrc = 0.
    sort itab_carrid by carrid.
    delete adjacent duplicates from itab_carrid comparing carrid.
  endif.
  loop at itab_carrid into wa_carrid.
    ls_value_set-key = wa_carrid-carrid.
    ls_value_set-value = wa_carrid-carrid.
    append ls_value_set to lt_value_set.
  endloop.
  lo_nodeinfo_spfli->set_attribute_value_set( name = 'CARRID'
  value_set = lt_value_set ).
endmethod.
in the event of first DDBK, write the select statement wsing where condition of lv_XXX.
and append the record as above.
Regards,
sarath