Value help - exporting parameters

Question

Hello,
I am having difficulty exporting the vendor name in addition to the vendor number using search help in web dynpro ABAP.
I have looked at the SAP help (linked below) and read through some of the threads on value help before posting but have had no luck.
http://help.sap.com/saphelp_nw70ehp1/helpdata/en/47/9f724642314aabe10000000a42189b/frameset.htm
Here are the steps I've taken:
I've created a context node with dictionary structure LFA1 with two attributes LIFNR and NAME1.  The input help mode for LIFNR is automatic and the search help is KRED_C.
I've gone into KRED_C and added an export parameter NAME1 and maintained the parameter assignment to KRED_T.
In search help KREDA I've changed the Selection method from M_KREDA to ZM_KREDA and added the NAME1 field in view ZM_KREDA.  I added a search help parameter (EXP) name1 to KREDA and maintained the parameter assignment between KRED_T and KREDA.
When I test the web dynpro, the search help displays name1 in the hit list, but when I make a selection, only LIFNR is populated and NAME1 is not.
I've also tried using KRED for my LIFNR search help instead of KRED_C with no luck.
I've looked at the sample program WDR_TEST_DDIC_SHLP but can't see what I might be doing wrong.
Any ideas or suggestions would be greatly appreciated.
Thanks,
Gordon

Answer 1

Hi
You can directly aply the OVS to the field KRED_C.It is easy also..
Use the std component WDR_OVS in the used components.
Go to particular attribute and change the input help mode :Object value Selector
and OVS componet usage: <aliias name of std component>
then create event handler in methods tab and then bind the standard event(OVS) of std component to this event handler
In coding in place of kunnr ,name change to lifnr ,KRED_C
types:
    begin of lty_stru_input,
      kunnr type kna1-kunnr,
      name1 type kna1-name1,
    end of lty_stru_input.
  types:
    begin of lty_stru_list,
  add fields for the selection list here
      kunnr type kna1-kunnr,
      name1 type kna1-name1,
      land1 type kna1-land1,
    end of lty_stru_list.
  data: ls_search_input  type lty_stru_input,
        lt_select_list   type standard table of lty_stru_list,
        ls_text          type wdr_name_value,
        lt_label_texts   type wdr_name_value_list,
        lt_column_texts  type wdr_name_value_list,
        lv_window_title  type string,
        lv_group_header  type string,
        lv_table_header  type string,
        cond(72) TYPE c, "for one where clause
        itab_where LIKE TABLE OF cond, "dyn. where clause tabl
       lt_kna1 TYPE TABLE OF ty_pa0001, "Results table
node_kna1 TYPE REF TO if_wd_context_node, "Reference to context n
elem_kna1 TYPE REF TO if_wd_context_element. "Reference to context n
  field-symbols: <ls_query_params> type lty_stru_input,
                 <ls_selection>    type lty_stru_list.
  case ovs_callback_object->phase_indicator.
    when if_wd_ovs=>co_phase_0.  "configuration phase, may be omitted
      ls_text-name = `KUNNR`.  "must match a field name of search
      ls_text-value = `Customer Number`. "wd_assist->get_text( `001` ).
      insert ls_text into table lt_label_texts.
      ls_text-name = `NAME1`.  "must match a field in list structure
      ls_text-value = `Customer Name`. "wd_assist->get_text( `002` ).
      insert ls_text into table lt_column_texts.
      lv_window_title = 'Customer Details'.
      ovs_callback_object->set_configuration(
                label_texts  = lt_label_texts
                column_texts = lt_column_texts
                window_title = lv_window_title
                col_count    = 2
                row_count    = 20 ).
    when if_wd_ovs=>co_phase_1.  "set search structure and defaults
    node_kna1 = wd_context->get_child_node( name = `KNA1` ).
get element via lead selection
      elem_kna1 = node_kna1->get_element( ).
      ovs_callback_object->context_element->get_static_attributes(
          importing static_attributes = ls_search_input ).
    pass the values to the OVS component
      ovs_callback_object->set_input_structure(
          input = ls_search_input ).
    when if_wd_ovs=>co_phase_2.
      if ovs_callback_object->query_parameters is not bound.
      endif.
      assign ovs_callback_object->query_parameters->*
                              to <ls_query_params>.
      if not <ls_query_params> is assigned.
      endif.
    IF not <ls_query_params>-kunnr EQ ' ' AND <ls_query_params>-name1 EQ ' '.
     SELECT * FROM kna1
    INTO CORRESPONDING FIELDS OF TABLE lt_select_list
    WHERE kunnr EQ <ls_query_params>-kunnr
    AND   name1 EQ <ls_query_params>-name1.
   ELSE.
     SELECT * FROM kna1
    INTO CORRESPONDING FIELDS OF TABLE lt_select_list.
    ENDIF.
ovs_callback_object->set_output_table( output = lt_select_list ).
    when if_wd_ovs=>co_phase_3.
      assign ovs_callback_object->selection->* to <ls_selection>.
        ovs_callback_object->context_element->set_static_attributes(
                               static_attributes = <ls_selection> ).
      endif.
  endcase.
if you have any doubts please let me know
Thanks and regards
Tulasi Palnati