Data binding with tableview: no data returned...

Question

Hi,
I looked at the example BSP_MODEL and now I am trying to build a simple test application with a tableview.
I can easily display data from my model in the tableview, but I can't get the modified data back to my model.
I have implemented the method DO_HANDLE_DATA in the table's controller with the following code:<i>
  CALL METHOD super->do_handle_data
    EXPORTING
      form_fields     = form_fields
      global_messages = global_messages.</i>
The DO_INIT method is like this:
<i>m_model ?= create_model( model_id = 'm'
                         class_name = 'ZNP5' ).
if m_model is bound.
  m_model->init( ).     "a simple select on SFLIGHT
endif.</i>
Obviously I missed something, any idea?
Thanks for your help.
Nicolas

Answer 1

Hi Richard,
Here are more details on my test application:
Model:
- Class Name: ZNP5, superclass: CL_BSP_MODEL
- Attributes: FLIGHTS, Public, TYPE FLIGHTTAB
- Method INIT, Public:
  SELECT * FROM sflight INTO TABLE flights.
The BSP Applications consists of a main controller (main.do) and a subcontroller (table.do) calling views main.htm and table.htm.
MAIN.DO:
- DO_INIT method
  DATA: subc1 TYPE REF TO cl_bsp_controller2.
  subc1 ?=  create_controller( controller_name = 'table.do'
                               controller_id   = 'subc1' ).
- DO_REQUEST method
  DATA: view TYPE REF TO if_bsp_page.
  dispatch_input( ).
  view ?= create_view( view_name = 'main.htm' ).
  call_view( view ).
TABLE .DO
- Attributes: M_MODEL, Private, Type Ref To ZNP5
- DO_INIT method
  m_model ?= create_model( model_id = 'm'
                           class_name = 'ZNP5' ).
  if m_model is bound.
    m_model->init( ).
  Endif.
- DO_REQUEST method
  DATA: view TYPE REF TO if_bsp_page.
  view ?= create_view( view_name = 'table.htm' ).
  view->set_attribute( name = 'model' value = m_model ).
  call_view( view ).
- DO_HANDLE_DATA method
  CALL METHOD super->do_handle_data
    EXPORTING
      form_fields     = form_fields
      global_messages = global_messages.
main.htm
<%@page language="abap" %>
<%@extension name="htmlb" prefix="htmlb" %>
<%@extension name="xhtmlb" prefix="xhtmlb" %>
<%@extension name="bsp" prefix="bsp" %>
<htmlb:content design="design2003" >
  <htmlb:page title=" " >
    <htmlb:form>
      <bsp:call comp_id="subc1" />
    </htmlb:form>
  </htmlb:page>
</htmlb:content>
table.htm
Attributes: model Type ref to ZNP5
            SelectedRow type string
<%@page language="abap" %>
<%@extension name="htmlb" prefix="htmlb" %>
<htmlb:tableView id               = "tvX"
                 headerText       = "Connections"
                 width            = "100"
                 headerVisible    = "true"
                 design           = "alternating"
                 visibleRowCount  = "8"
                 fillUpEmptyRows  = "true"
                 showNoMatchText  = "true"
                 filter           = "server"
                 sort             = "server"
                 onHeaderClick    = "MyEventHeaderClick"
                 onRowSelection   = "MyEventRowSelection"
                 selectionMode    = "LINEEDIT"
                 selectedRowIndex = "<%= selectedRow %>"
                 table            = "//model/flights"
                 tabIndexCell     = "true" />
I've just discovered that the data is actually transfered to the model but it's not retained: When I edit the 1st line of the table, the modified values are transfered to the model, but if I edit the 2nd line, I loose the previous changes... How to solve this?
Regards,
Nicolas