Validating the value in the table element

Question

hello all,
            I have a column in the table element as editable and i want to validate the value entered in the editable column with value in another column.can this achieved without selecting the row in the table...like on change of value etc...
i am new to web dynpros..can any one help me on this.
with regards,
sandeep akella.
Edited by: sandeep akella on Aug 10, 2009 2:42 PM

Answer 1

I now create a toolbar for my table and within that toolbar am creating a Toolbarbutton. Now upon pressing this button I want to validate the entries of SEATS_NEEDED against the entry in SEATS_AVAILABLE. In case of any inconsistency I not only throw an error message but also highlight the particular columns cell in which the error has occured. Below is the coding inside my buttons action handler:
METHOD onactionvalidate_booking .
  DATA: lr_node TYPE REF TO if_wd_context_node,
        lt_sflight TYPE wd_this->elements_sflight,
        wa_sflight TYPE wd_this->element_sflight,
        lr_element TYPE REF TO if_wd_context_element.
  lr_node = wd_context->get_child_node( name = wd_this->wdctx_sflight ).
" Fetch the entire tables data into an internal table for validation purpose
  lr_node->get_static_attributes_table(  EXPORTING from   = 1
                                                    to     = 2147483647
                                         IMPORTING table  = lt_sflight ).
  LOOP AT lt_sflight INTO wa_sflight WHERE seats_available <> 0.
" Check if user is trying to book more seats than what are available & throw an error message if needed
    IF wa_sflight-seats_needed > wa_sflight-seats_available.
      lr_element = lr_node->get_element( index = sy-tabix ).
" get message manager
      DATA lo_api_controller     TYPE REF TO if_wd_controller.
      DATA lo_message_manager    TYPE REF TO if_wd_message_manager.
      lo_api_controller ?= wd_this->wd_get_api( ).
      CALL METHOD lo_api_controller->get_message_manager
        RECEIVING
          message_manager = lo_message_manager.
" report message
      CALL METHOD lo_message_manager->report_attribute_error_message
        EXPORTING
          message_text   = 'Number of desired seats greater than available seats!'
          element        = lr_element
          attribute_name = 'SEATS_NEEDED'.
    ENDIF.
  ENDLOOP.
ENDMETHOD.