Error in receiving tableview data for selected row

Question

Hi Collegues ,
We plan to realize an application for the maintanance of  planning data . In the first step we created a value help page by using a tableview with iterator class ( 1 of the 3 methods of the Interface was filled with logic ) . We don't use any controller for that application  .
A global internal table with the relevant help value data ( fgrvalues ) is used for the tableview and the call is :
TYPE I .
+CLASS CL_HTMLB_MANAGER DEFINITION LOAD.
CLEAR ONCLICKEVENT.
IF EVENT_ID = CL_HTMLB_MANAGER=>EVENT_ID.
    EVENT_DATA = CL_HTMLB_MANAGER=>GET_EVENT( REQUEST ).
    IF ( EVENT_DATA IS NOT INITIAL ) AND
            ( EVENT_DATA->EVENT_TYPE = 'click' ) .
            ONCLICKEVENT = EVENT_DATA->SERVER_EVENT .
    ENDIF.
ENDIF.+
CASE ONCLICKEVENT.
WHEN 'take' .
   TABLE ?= CL_HTMLB_MANAGER=>GET_DATA( REQUEST = REQUEST
   NAME = 'tableView'
   ID = 'fgr1_vhelp' ) .
   TABLE_EVENT = TABLE->DATA.
   IF TABLE_EVENT->SELECTEDROWINDEX IS NOT INITIAL.
      ROWSELECTION = TABLE_EVENT->SELECTEDROWINDEX.  
-> ROWSELECTION - Content is now the index of the selected tableview row
We always get the selected row in TABLE_EVENT->SELECTEDROWINDEX and the table TABLE_EVENT->ALLCOLUMNNAMES filled ( column ZX_FGR1 is the 2nd column ) 
but we never got the tableview data for that tableview row no matter what we tried . We tried it with a tableview-event fired on 'rowselection' by user line-selection . We have deactivated the iterator or changed the BPS design value . With the same result - nothing was given back .
We found that the System-Call Return value of :
+system-call ict
did
ihttp_scid_get_form_field
parameters
m_c_msg " > c handle
name " > form field name                value " < form field value
                m_last_error. " < return code+
in the method IF_HTTP_ENTITY~GET_FORM_FIELD is empty .  M_LAST_ERROR occurs with value '20' .
  + ASSIGN ROWSELECTION TO .
COLUMN_VALUE = TABLE_EVENT->GET_CELL_VALUE( ROW_INDEX =
COLUMN_INDEX = '2' ). -> Column Value is empty !!+
   +CALL METHOD TABLE_EVENT->GET_CELL_VALUE
      EXPORTING
        ROW_INDEX = TABLE_EVENT->SELECTEDROWINDEX
        COLUMN_INDEX = '2'
      RECEIVING
        VALUE = COLUMN_VALUE -> Column Value is empty !!+
   +CALL METHOD TABLE_EVENT->GET_SIMPLE_DATA ....
         -> Column Value is empty !!+ *----
What could be the reason for that problem ? In generally it must be possible somehow to read the tableview data for one or all rows of the mentioned tableview .
We hope that someone can help and are very thankful for a hint or solution . If you need more details please let us know .
Please Remark: It's no solution for us to read the data by using the created internal table fgrvalues and the selectedrowindex cause in a later step we plan to update an ODS table with the manual modified planning data of an editable tableview .
Thanks a lot in advance
Dirk Läufer

Answer 1

Hi collegues ,
It's done .
After we've got a very helpful little hint from Brian :
The <htmlb:tableView> renders a table to the browser. It does not keep a copy of the table. The browser will also never return the table. Never. What it can return are inputfields for each cell. But then only if each cell is custom rendered as an inputfield.
we could certainly solve the problem .
We set the field we want to get back from table view on not editable inputfield via the tableview-iterator method IF_HTMLB_TABLEVIEW_ITERATOR~RENDER_CELL_START :
DATA: LCL_TABLE       TYPE REF TO CL_BSP_BEE_TABLE   ,
      LCL_INPUTFIELD2 TYPE REF TO CL_HTMLB_INPUTFIELD .
CASE P_COLUMN_KEY .
WHEN 'ZX_FGR1'.
*    Field Firm Group
     CREATE OBJECT LCL_INPUTFIELD2.
     LCL_INPUTFIELD2->ID        = P_CELL_ID.
     LCL_INPUTFIELD2->WIDTH     = '100%'.
     LCL_INPUTFIELD2->MAXLENGTH = 4.
     LCL_INPUTFIELD2->TYPE      = 'STRING'.
     LCL_INPUTFIELD2->DESIGN    = 'STANDARD'.
     LCL_INPUTFIELD2->DISABLED  = 'TRUE'.
     LCL_INPUTFIELD2->VALUE =
         GET_COLUMN_VALUE( COLUMN_NAME = 'ZX_FGR1').
     P_REPLACEMENT_BEE     = LCL_INPUTFIELD2 .
Now the method in OnInputPorcessing:
TRY.
      CALL METHOD CL_HTMLB_MANAGER=>GET_SIMPLE_DATA
          EXPORTING
            REQUEST       = RUNTIME->SERVER->REQUEST
            ID            = 'fgr1_vhelp'
            ROW_IDX       = TABLE_EVENT->SELECTEDROWINDEX
            COL_NAME      = 'ZX_FGR1'
          CHANGING
            DATA          = FGRVALUES_LINE-ZX_FGR1 .
         IF NOT FGRVALUES_LINE-ZX_FGR1  IS INITIAL.
*                 selektierte Firmengruppe übernehmen
                  ZX_FGR1     = FGRVALUES_LINE-ZX_FGR1   .
                  CALL METHOD NAVIGATION->SET_PARAMETER
                        EXPORTING NAME  = 'ZX_FGR1'
                                  VALUE = ZX_FGR1.
         ENDIF.
      CATCH CX_SY_CONVERSION_ERROR .
   ENDTRY.
works properly as it should be ...
An enormous Thanksgiving to you , Brian !!!!