Drop down list in ALV grid

Question

Dear Expert,
I am new to OOPS ,
I want to display drop down list for a particular field in my output, so I am using OOPS but in my below code
I am facing problem in displaying the output as I am getting the error message
Field catalog not found...
Also advice me how to display drop down list in a particular field.
Please advice
MODULE pbo OUTPUT.
  SET PF-STATUS 'ZTEST'.
  IF g_custom_container IS INITIAL.
    DATA: lt_exclude TYPE ui_functions,
          lt_f4 TYPE lvc_t_f4 WITH HEADER LINE.
    CREATE OBJECT g_custom_container
      EXPORTING
        container_name = g_container.
    CREATE OBJECT g_grid
      EXPORTING
        i_parent = g_custom_container.
    PERFORM field_catalog TABLES it_lvc_t_fcat
       USING: 'S_FINAL' 'MATNR' ' ' 'Part Number' ' ' ' ',
                   'S_FINAL' 'MAKTX' ' ' 'Part Description' ' ' ' ',
                   'S_FINAL' 'MBLNR' ' ' 'Document No' ' ' ' ',
                   'S_FINAL' 'BLDAT' ' ' 'Document date' ' ' ' ',
                   'S_FINAL' 'LIFNR' ' ' 'Vendor Number' ' ' ' ',
                   'S_FINAL' 'STATUS' ' ' 'Acknowledgement' ' ' 'X',
                   'S_FINAL' 'REMARKS' ' ' 'Remarks' ' ' 'X'.
    CALL METHOD g_grid->set_table_for_first_display
       EXPORTING
*    I_STRUCTURE_NAME              =
     is_layout                                =   it_lvc_s_layo
       CHANGING
         it_outtab                        =   i_final
     it_fieldcatalog                =   it_lvc_t_fcat
  ENDIF.
ENDMODULE.                 " PBO  OUTPUT
FORM field_catalog  TABLES t_field_catalog STRUCTURE wt_lvc_s_fcat
USING fp_tabname TYPE any
fp_fieldname TYPE any
fp_key TYPE any
fp_text TYPE any
fp_do_sum TYPE any
fp_edit TYPE any.
  t_field_catalog-tabname = fp_tabname.
  t_field_catalog-fieldname = fp_fieldname.
  t_field_catalog-key = fp_key.
  t_field_catalog-seltext = fp_text.
  t_field_catalog-do_sum = fp_do_sum .
  t_field_catalog-edit = fp_edit .
ENDFORM.                    "field_catalog
Edited by: Karthik R on Mar 15, 2010 6:11 PM

Answer 1

Hi Karthik,
Below mentioned  is a Simple code for creating dropdown lists for columns in ALV grid output
REPORT z_alv_dropdown.
*Type pools declarations for ALV
TYPE-POOLS : slis.
*data declarations for ALV container, ALV grid,  Field catalogues & layout
DATA: g_grid  TYPE REF TO cl_gui_alv_grid,
      g_custom_container TYPE REF TO cl_gui_custom_container,
      gt_fieldcat TYPE lvc_t_fcat,
      gs_layout TYPE lvc_s_layo.
*INTERNAL TABLE AND WA DECLARATIONS FOR t517 A table
DATA: gt_outtab TYPE STANDARD TABLE OF t517a INITIAL SIZE 0,
      wa_outtab TYPE t517a.
*initialisation event
INITIALIZATION.
*Start of selection event
START-OF-SELECTION.
*Call to ALV
  CALL SCREEN 600.
*On this statement double click  it takes you to the screen painter SE51.
*Create a Custom container and name it CCONT and OK code as OK_CODE.
*Save check and Activate the screen painter.
*Now a normal screen with number 600 is created which holds the ALV grid.
PBO of the actual screen , Here we can give a title and customized menus
Here we also call the subroutine for ALV output.
      MODULE PBO OUTPUT                                             *
MODULE pbo OUTPUT.
set pf-status 'xxx'.
set titlebar 'MAIN100'.
Subroutine to display the output in alv
  PERFORM alv_output.
ENDMODULE.                    "pbo OUTPUT
PAI module of the screen created. In case we use an interactive ALV or
*for additional functionalities we can create OK codes and
based on the user command we can do the coding.
      MODULE PAI INPUT                                              *
MODULE pai INPUT.
ENDMODULE.                    "pai INPUT
*&      Form  BUILD_FIELDCAT
FORM build_fieldcat.
  DATA ls_fcat TYPE lvc_s_fcat.
*Build the field catalogue
  CALL FUNCTION 'LVC_FIELDCATALOG_MERGE'
    EXPORTING
      i_structure_name = 'T517A'
    CHANGING
      ct_fieldcat      = gt_fieldcat.
To assign dropdown in the fieldcataogue
  LOOP AT gt_fieldcat INTO ls_fcat.
    CASE ls_fcat-fieldname.
      WHEN 'SLART'.
*drdn-hndl = '1' is the first list box
        ls_fcat-drdn_hndl = '1'.
        ls_fcat-outputlen = 15.
        MODIFY gt_fieldcat FROM ls_fcat.
*drdn-hndl = '2' is the second list box
      WHEN 'ABART'.
        ls_fcat-drdn_hndl = '2'.
        ls_fcat-outputlen = 15.
        MODIFY gt_fieldcat FROM ls_fcat.
    ENDCASE.
  ENDLOOP.
ENDFORM.                    "build_fieldcat
*&      Form  ALV_OUTPUT
FORM alv_output .
*Create object for container
  CREATE OBJECT g_custom_container
         EXPORTING container_name = 'CCONT'.
*create object for grid
  CREATE OBJECT g_grid
         EXPORTING i_parent = g_custom_container.
Build fieldcat and set column
*Assign a handle for the dropdown listbox.
  PERFORM build_fieldcat.
*Build layout
  PERFORM build_layout.
Define a drop down table.
  PERFORM dropdown_table.
*fetch values from the T517A table
  SELECT * FROM t517a INTO TABLE gt_outtab.
*Display ALV output
  CALL METHOD g_grid->set_table_for_first_display
    EXPORTING
      is_layout       = gs_layout
    CHANGING
      it_fieldcatalog = gt_fieldcat
      it_outtab       = gt_outtab.
ENDFORM.                               "ALV_OUTPUT
*&      Form  dropdown_table
      text
-->  p1        text
<--  p2        text
FORM dropdown_table.
*Declarations for drop down lists in ALV.
  DATA: lt_dropdown TYPE lvc_t_drop,
        ls_dropdown TYPE lvc_s_drop.
First SLART listbox (handle '1').
  ls_dropdown-handle = '1'.
  ls_dropdown-value = '01 Pink'.
  APPEND ls_dropdown TO lt_dropdown.
  ls_dropdown-handle = '1'.
  ls_dropdown-value = '02 Yellow'.
  APPEND ls_dropdown TO lt_dropdown.
  ls_dropdown-handle = '1'.
  ls_dropdown-value = '03 Green'.
  APPEND ls_dropdown TO lt_dropdown.
  ls_dropdown-handle = '1'.
  ls_dropdown-value = '04 Black'.
  APPEND ls_dropdown TO lt_dropdown.
  ls_dropdown-handle = '1'.
  ls_dropdown-value = '05 White'.
  APPEND ls_dropdown TO lt_dropdown.
  ls_dropdown-handle = '1'.
  ls_dropdown-value = '06 Blue'.
  APPEND ls_dropdown TO lt_dropdown.
  ls_dropdown-handle = '1'.
  ls_dropdown-value = '09 Other Colors'.
  APPEND ls_dropdown TO lt_dropdown.
*method to display the dropdown in ALV
  CALL METHOD g_grid->set_drop_down_table
    EXPORTING
      it_drop_down = lt_dropdown.
ENDFORM.                               " dropdown_table
*&      Form  build_layout
      text
*layout for ALV output
FORM build_layout .
  gs_layout-cwidth_opt = 'X'.
  gs_layout-grid_title = 'ALV DROPDOWN LISTS'.
  gs_layout-no_toolbar = 'X'.
ENDFORM.                    " build_layout
Hope it is helpful,
Regards,
Soundarya.