Editable ALV : Need PERNR & ENAME on PERNR F4 help

Question

Dear Friends,
I have created a GRID ALV for my customized HR module. In this ALV, there is a field PERNR and alongwith that there is another field ENAME.
PERNR field is editable & supported with F4 help. My requirement is like, when I change the PERNR, say, I clicked on F4 help (PREM - for PERNR) & select any PERNR, then automatically, the ENAME should get changed.
My requirement can also be achieved, if after getting the New PERNR, the user presses the ENTER button, then the ENAME of the PERNR should also get updated.
I tried to check the way with which SAP is going through the whole process by debugging (/H method).
But on clicking ENTER the control remains doesn't go anywhere, that means ENTER is not considered as an EVENT. Also, when I click on F4 Help button, the control remains in SAPLSLVC_FULLSCREEN program & it doesn't come in my Z report.
My problem can be solved in one of the following ways :
1). Can someone please tell me the way to get customized F4 help in GRID ALV & also how can I
populate ENAME alongwith PERNR in one go.
2). Any example code of OOPS ALV with this scenario. (I know, this can be done with OOPS
methods, but I'm novice in OOPS).
OR any other possible way, that you think can solve my problem.
PLS DON'T GIVE THE SOLUTION TO CHECK BCALV REPORTS ... I've already checked those, but there is so much functionality included that it is very difficult to understand a single functionality from those.
Waiting for your replies Gurus ...
Thanks & Regards,
Mohit Grover

Answer 1

Hi,
class lcl_event_receiver definition.
  public section.
    methods:
      handle_data_changed
         for event data_changed of cl_gui_alv_grid
             importing er_data_changed.
    methods: check_price
     importing
        ps_good_price type lvc_s_modi
        pr_data_changed type ref to cl_alv_changed_data_protocol.
endclass.                    "lcl_event_receiver DEFINITION
class lcl_event_receiver implementation.
  method handle_data_changed.
    data: ls_good type lvc_s_modi.
    loop at er_data_changed->mt_good_cells into ls_good.
      case ls_good-fieldname.
* check if column PLANETYPE of this row was changed
        when 'PRICE'.
          call method check_price
            exporting
              ps_good_price   = ls_good
              pr_data_changed = er_data_changed.
      endcase.
    endloop.
  endmethod.                    "handle_data_changed
  method check_price.
    data: l_price type sflight-price.
    call method pr_data_changed->get_cell_value
      exporting
        i_row_id    = ps_good_price-row_id
        i_fieldname = ps_good_price-fieldname
      importing
        e_value     = l_price.
    read table t_sflight into fs_sflight index sy-tabix.
    if sy-subrc = 0.
      move l_price to fs_sflight-cost.
      modify t_sflight from  fs_sflight
                       transporting price cost
                       where carrid = fs_sflight-carrid
                       and connid = fs_sflight-connid.
     endif.
    endmethod.
or use the standard program BCALV_EDIT_03 if any dought pls let me know!!
thanks
ravi