topic Re: Handler data_changed in ALV in Application Development and Automation Discussions

Handler data_changed in ALV

Former Member — Thu, 18 Jun 2009 07:58:08 GMT

Hello All,

I am using the handler Data_changed.

Here the table "er_data_changed" is filled when a field is modified in the alv.

But when the F4 for a field is used, then the "er_data_changed" is getting refreshed i.e, the other old modified value are lost.

I do not want the old modification to be lost.

Thanks,

Nishanth.

Re: Handler data_changed in ALV

Former Member — Thu, 18 Jun 2009 08:13:32 GMT

Hi,

Call the method CHECK_CHANGED_DATA in PAI.

Incase you want to handle the F4 event then create the handler method as follows

METHODS handle_f4

FOR EVENT onf4 OF cl_gui_alv_grid

IMPORTING e_fieldname

e_fieldvalue

es_row_no

er_event_data

et_bad_cells

e_display.

Regards,

Ankur Parab

Re: Handler data_changed in ALV

Former Member — Thu, 18 Jun 2009 08:26:48 GMT

Hello Ankur,

I am not able to understand when to use "check_changed_data" and how does it help.

Thanks,

Kunal.

Re: Handler data_changed in ALV

Former Member — Thu, 18 Jun 2009 08:30:03 GMT

Hi,

The method Check_changed_data can be called while saving the contents of the modified ALV.


  CALL METHOD g_grid->check_changed_data
    IMPORTING
      e_valid = l_valid.

Regards,

Mansi.

Re: Handler data_changed in ALV

Former Member — Thu, 18 Jun 2009 08:37:00 GMT

Hello Ankur,

Well the problem is, I am not saving the contents of the ALV to the database until the enter key is pressed. So until then i would like to have all modified data in er_data_changed->mt_good_cells.

As of now, when i change the first data using F4, the change is recorded in er_data_changed->mt_good_cells, but as i go on and modify secong record using F4, the first change is deleted and the new change is only recorded.

Hopefully u have a better picture of my problem now.

Thanks,

kunal.

Re: Handler data_changed in ALV

Former Member — Thu, 18 Jun 2009 09:10:05 GMT

Hi,

In that case in your handler method call sender->REFRESH_TABLE_DISPLAY.

So that the changed data is passed to teh grid.

regards,

Ankur Parab

Re: Handler data_changed in ALV

Former Member — Thu, 18 Jun 2009 09:45:30 GMT

Hello Ankur,

I have tried the same. But No success.

Thanks,

Kunal.

Re: Handler data_changed in ALV

I355602 — Thu, 18 Jun 2009 10:01:00 GMT

Hi,

Refer to the below code snippet:-


**Class Definition
CLASS: lcl_event_receiver DEFINITION DEFERRED.

SET HANDLER v_event_receiver->handle_item_changed FOR v_ref_grid.


CLASS lcl_event_receiver DEFINITION.
  METHODS : 
      handle_item_changed FOR EVENT data_changed_finished
                      OF cl_gui_alv_grid
                      IMPORTING e_modified et_good_cells.
ENDCLASS.                    "lcl_event_receiver DEFINITION

CLASS  lcl_event_receiver IMPLEMENTATION.
*--- modifying updated data in internal table
  METHOD handle_item_changed.
    PERFORM modify_table USING e_modified
                               et_good_cells.

  ENDMETHOD.                    "handle_item_changed
ENDCLASS.                    "lcl_event_receiver IMPLEMENTATION

In this perform you can use code like:-


FORM modify_table  USING e_modified
                         et_good_cells TYPE lvc_t_modi.

  DATA: ls_good1 TYPE lvc_s_modi.

  READ TABLE et_good_cells INDEX 1 INTO ls_good1.
  IF sy-subrc = 0.
    CASE ls_good1-fieldname.
*--- When Material
      WHEN 'MATNR'. "<--field name
        READ TABLE it_zmm_spice_conv INTO wa_zmm_spice_conv
          INDEX ls_good1-row_id.
        IF sy-subrc = 0.
          wa_zmm_spice_conv-matnr = ls_good1-value.
          MODIFY it_zmm_spice_conv  FROM wa_zmm_spice_conv
            INDEX ls_good1-row_id TRANSPORTING matnr.
        ENDIF.
    ENDCASE.
  ENDIF.
ENDFORM.

Similarly code for other fields (columns) as well.

Hope this helps you.

Regards,

Tarun

Re: Handler data_changed in ALV

Former Member — Thu, 18 Jun 2009 10:15:27 GMT

in that case u need to play with values like this .

*Registering Fields for F4 function.

refresh: gt_f4a.

gt_f4_wa-fieldname = 'BELNR'.

gt_f4_wa-register = 'X'.


  *gt_f4_wa-getbefore  = 'X'.*
  *gt_f4_wa-chngeafter = 'X'.*

--> Based on these values , your container get refreshed.

for more info , please check its documentations.

regards

Prabhu