WEB DYNPRO ABAP - query

Question

HI ALL,
I tried the below code to execute a drop down list in my alv table but i get a error like LO_INTERFACECONTROLLER is unknown can any one help me to solve this issue please.
  DATA: LT_VALUESET TYPE TABLE OF WDR_CONTEXT_ATTR_VALUE,
         LS_VALUESET TYPE WDR_CONTEXT_ATTR_VALUE.
  DATA LV_VALUE TYPE REF TO CL_SALV_WD_CONFIG_TABLE.
  LV_VALUE->IF_SALV_WD_TABLE_SETTINGS~SET_DATA_CHECK( IF_SALV_WD_C_TABLE_SETTINGS=>DATA_CHECK_ON_CELL_EVENT ).
  DATA: LR_COL TYPE REF TO CL_SALV_WD_COLUMN,
        LR_DROPDOWN TYPE REF TO CL_SALV_WD_UIE_DROPDOWN_BY_KEY.
  LO_VALUE = LO_INTERFACECONTROLLER->GET_MODEL( ).
  LO_VALUE->IF_SALV_WD_TABLE_SETTINGS~SET_READ_ONLY( ABAP_FALSE ).
  LR_COLUMN = LO_VALUE->IF_SALV_WD_COLUMN_SETTINGS~GET_COLUMN( ID = 'weightage' ).
  CREATE OBJECT LR_DROPDOWN EXPORTING SELECTED_KEY_FIELDNAME = 'weightage'.
   LR_COLUMN->SET_CELL_EDITOR( LR_DROPDOWN ).
   DATA: LT_VALUESET TYPE TABLE OF WDR_CONTEXT_ATTR_VALUE,
         LS_VALUESET TYPE WDR_CONTEXT_ATTR_VALUE,
         LR_NODE TYPE REF TO IF_WD_CONTEXT_NODE,
         LR_NODEINFO TYPE REF TO IF_WD_CONTEXT_NODE_INFO.
   LR_NODE = WD_CONTEXT->GET_CHILD_NODE( 'assesstment' ).
   LR_NODEINFO = LR_NODE->GET_NODE_INFO( ).
   lo_nd_assesstment = wd_context->get_child_node( name = wd_this->wdctx_assesstment ).
   lo_el_assesstment = lo_nd_assesstment->GET_ELEMENT( ).
CALL METHOD lo_nd_assesstment->GET_STATIC_ATTRIBUTES_TABLE IMPORTING TABLE = ls_assesstment.
LS_VALUESET-VALUE = 'FIRST'.
LS_VALUESET-TEXT = 'FIRST'.
APPEND LS_VALUESET TO LT_VALUESET.
LS_VALUESET-VALUE = 'SECOND'.
LS_VALUESET-TEXT = 'SECOND'.
APPEND LS_VALUESET TO LT_VALUESET.
LR_NODEINFO->SET_ATTRIBUTE_VALUE_SET( EXPORTING NAME = 'weightage' VALUE_SET = LT_VALUESET

Answer 1

Hi Vadiv,
First, assure that you defined a component use to your ALV component (SALV_WD_TABLE component) in current view.
You have to define LO_INTERFACECONTROLLER.
try this before the line: LO_VALUE = LO_INTERFACECONTROLLER->GET_MODEL( ).
DATA: LO_INTERFACECONTROLLER type ref to iwci_salv_wd_table .
LO_INTERFACECONTROLLER = wd_this->wd_cpifc_YOUR_ALV_COMPONENT_NAME( ).
Good luck,
Catalin Butnaru