ALV adding a new column

[Former Member]

Hi!

In ALV, how do you create columns and add them so that they are displayed?

We have a list viewer and we want to add a new column to it.

regards

Baran

[Former Member]

Hi Baran,

Add that new field in the fieldcatalog and populate the value in the value in the internal table.

loop at it_fieldcatalog into wa_fieldcatalog.

 wa_fieldcatalog-fieldname = 'NEW_FIELD'.
 wa_fieldcatalog-outputlen = '15'.
 append wa_fieldcatalog to it_fieldcatalog.
 clear wa_fieldcatalog,
endloop.

[Former Member]

thanks for the reply,

do you know which method contains the fieldcatalog?

[Former Member]

this is not a method , may be u can show ur code

[Former Member]

Hi baran ,

There are alternative ways if you're creating it for use in list viewer you don't have to use methods.

• use this for merging fields that you use in your

• internal table

CALL FUNCTION 'REUSE_ALV_FIELDCATALOG_MERGE'

EXPORTING

i_program_name = sy-repid

i_internal_tabname = 'WT_LIST'

i_client_never_display = 'X'

i_inclname = gc_include_name

CHANGING

ct_fieldcat = wt_fcat2

EXCEPTIONS

inconsistent_interface = 1

program_error = 2

OTHERS = 3.

----

---

*

if you want to append directly or after the fieldcatalog merge

such as :

CLEAR ws_fcat.

ws_fcat-fieldname = 'BANKN'.

ws_fcat-tabname = 'WT_VENDOR'.

ws_fcat-ref_fieldname = 'BANKN'.

ws_fcat-ref_tabname = 'LFBK'.

ws_fcat-input = wv_edit.

APPEND ws_fcat TO wt_fcat.

*----

---

hope this helps

[Former Member]

Hi Baran,

Populate the fieldcatalog seperately like this...

data: WA_FLDCAT_SUMMARY TYPE LVC_S_FCAT,

IT_FLDCAT_SUMMARY TYPE LVC_T_FCAT.

*--populating the fieldcatalog used for displaying summary details

WA_FLDCAT_SUMMARY-FIELDNAME = 'MBDAT'.

WA_FLDCAT_SUMMARY-TABNAME = 'IT_SUMMARY'.

WA_FLDCAT_SUMMARY-REPTEXT = TEXT-002.

WA_FLDCAT_SUMMARY-COL_POS = '1'.

WA_FLDCAT_SUMMARY-OUTPUTLEN = 20.

WA_FLDCAT_SUMMARY-KEY = 'X'.

APPEND WA_FLDCAT_SUMMARY TO IT_FLDCAT_SUMMARY.

CLEAR WA_FLDCAT_SUMMARY.

Now asusal pass this in the method.

*--displaying the summary details

SORT IT_SUMMARY BY MBDAT.

CALL METHOD OBJ_GRID_SUMMARY->SET_TABLE_FOR_FIRST_DISPLAY

EXPORTING

IS_LAYOUT = X_SUMMARY

CHANGING

IT_FIELDCATALOG = IT_FLDCAT_SUMMARY

IT_OUTTAB = IT_SUMMARY[].

Regards,

Vidya

[uwe_schieferstein]

Hello Baran

If you ALV list is based on a DDIC structure you can use function module LVC_FIELDCATALOG_MERGE to create the fieldcatalog.

The documentation of the function module says that you can also use a structure defined within your application. However, this poses some restrictions on the structure definition. Therefore I disregard this option and almost always define a DDIC stucture for my ALV lists.

Regards

Uwe

[uwe_schieferstein]

Hello Baran

The function module REUSE_ALV_FIELDCATALOG_MERGE returns the fieldcatalog in table type SLIS_T_FIELDCAT_ALV which is not compatible with the requirements of CL_GUI_ALV_GRID. You have to convert SLIS_T_FIELDCAT_ALV to LVC_T_FCAT in order to use (function module availabe for this conversion).

All these REUSE_... function modules belong to the old-fashioned way to create ALV lists. If you do not have specific requirements (e.g. hierarchical ALV lists) then I recommend to exclusively use ABAP-OO means (classes, e.g. CL_GUI_ALV_GRID) for ALV lists.

At the beginning the effort for learing is higher yet the reward in the long term is a much higher flexibility in coding.

Regards

Uwe