ALV , How to add a Field after it has been deleted

[Former Member]

Hi,

I am formating a ABAP Webdynpro ALV: I remove a field by using :

l_value->if_salv_wd_column_settings~delete_column( lv_field_name).

How will I be able to add the field again ?

I tried the following :

l_value->if_salv_wd_column_settings~CREATE_COLUMN( lv_field_name).

but getting a 'null' object reference in the following standard code :

if ls_column-r_column->r_cell_editor->visible_fieldname is initial.

Regards

[former_member1371989]

Hi.

After create_column method you have to create cl_salv_wd_uie_text_view object:

  data:

    " Variables para configurar los ALVs.

    lr_alv_config_table  type ref to cl_salv_wd_config_table,

    lr_lr_wd_table_usage TYPE REF TO if_wd_component_usage,

    lr_wd_table          TYPE REF TO iwci_salv_wd_table,

    lr_table_settings    TYPE REF TO if_salv_wd_table_settings,

    lr_column_settings   TYPE REF TO if_salv_wd_column_settings,

    lr_column            TYPE REF TO cl_salv_wd_column,

    lr_text              type ref to cl_salv_wd_uie_text_view,

    lr_header type ref to cl_salv_wd_column_header.

  " Initialize variables

  lr_lr_wd_table_usage = wd_this->wd_cpuse_alv_1001( ).

  if lr_lr_wd_table_usage->has_active_component( ) is initial.

    lr_lr_wd_table_usage->create_component( ).

  endif.

  lr_wd_table = wd_this->wd_cpifc_alv_1001( ).

  lr_alv_config_table = lr_wd_table->get_model( ).

  lr_column_settings ?= lr_alv_config_table.

  lr_table_settings ?= lr_alv_config_table.

  " Delete Column.

  lr_column_settings->delete_column( 'OBJID' ).

  " Create column.

  lr_column = lr_column_settings->create_column( 'OBJID' ).

  create object lr_text.

  lr_text->set_text_fieldname( 'OBJID' ).

  lr_column->set_cell_editor( lr_text ).

  " Change the header of the column.

  lr_column->GET_HEADER( receiving value = lr_header ).

  if lr_header is bound.

    lr_column->delete_HEADER( receiving value = lr_header ).

  endif.

  lr_column->create_HEADER( receiving value = lr_header ).

  lr_header->SET_TEXT( exporting value = 'Objid Field' ).

[Former Member]

Hope this column/attribute is availabe in that NODE...please check it in debugging ..If that attribute exists to which the ALV DATA node is bound...ideally..create column should work.. Or else first try to get the COLUMN reference using GET_COLUMN..

When you have deleted it usually GET_COLUMNS willnot list that deleted column...