Problem when handling Portal events

Question

Hi all,
I am trying to handle portal events between two Iviews on a same page.For this I am using all the necessary parts from coding prospectives(eg. Event fire, Subscribe event and action handler method).
But I am not able to handle portal events.I found some properties on Iview and page level as:
1) Web Dynpro Client on Iview level - Default auto (Some threads suggest that events only works on HTML pages).
I change it to plain HTML, but having doubt that is this value passed to this property.
2) ID Prefix - Default blank (I-View level)
I assign com.sap to it and also assign application name to ID.
Is these will affect something on Portal handling.
I also watch some e-learning sessions, I do similer to those sessions but at my end I still facing problem.
Please suggest what I will do more to handle Portal events.
Thanks
Sanket sethi

Answer 1

I am using this code to  fire and catch Portal events.Please look at the code and suggest where I am lacking.
Fire:
data node                               type ref to if_wd_context_node.
data portal_event_namespace  type string value 'urn:com.sap.webdynpro.testApplications.testEvent'.
data portal_event_name          type string value 'FMP_EVENT'.
data portal_event_parameter   type string.
  data lr_componentcontroller type ref to ig_componentcontroller .
  data l_api_componentcontroller type ref to if_wd_component.
  data lr_port_manager type ref to if_wd_portal_integration.
  lr_componentcontroller =   wd_this->get_componentcontroller_ctr( ).
  l_api_componentcontroller = lr_componentcontroller->wd_get_api( ).
  lr_port_manager = l_api_componentcontroller->get_portal_manager( ).
  lr_port_manager->fire(
    exporting
      portal_event_namespace = portal_event_namespace
      portal_event_name      = portal_event_name
      portal_event_parameter = portal_event_parameter ).
Catch: (Register and receive parameter)
  data node                                  type ref to if_wd_context_node.
  data subscribe_hello                   type wdy_boolean.
  data  view                                  type ref to if_wd_view_controller.
  data  portal_event_namespace    type string value 'urn:com.sap.bc.webdynpro.<namerspace>.<Name>.
  data  portal_event_name             type string value 'FMPEVENT'.
here is the name of the action where the portal event will be received!
you have to create this action in the application!!
data  portal_event_action_name  type string value 'RECEIVE_PORTAL_EVENT'.
  data lr_componentcontroller type ref to ig_componentcontroller .
  data l_api_componentcontroller type ref to if_wd_component.
  data lr_port_manager type ref to if_wd_portal_integration.
DATA lo_api_component  TYPE REF TO if_wd_component.
DATA lo_portal_manager TYPE REF TO if_wd_portal_integration.
lo_api_component = wd_comp_controller->wd_get_api( ).
lo_portal_manager = lo_api_component->get_portal_manager( ).
DATA lo_api_controller  TYPE REF TO if_wd_view_controller.
lo_api_controller ?= wd_this->wd_get_api( ).
CALL METHOD lo_portal_manager->unsubscribe_event
  EXPORTING
    portal_event_namespace = portal_event_namespace
    portal_event_name      = portal_event_name
    view                   = lo_api_controller
  lr_componentcontroller =   wd_this->get_componentcontroller_ctr( ).
  l_api_componentcontroller = lr_componentcontroller->wd_get_api( ).
  lr_port_manager = l_api_componentcontroller->get_portal_manager( ).
  view ?= wd_this->wd_get_api( ).
   call method lr_port_manager->subscribe_event
      exporting
        portal_event_namespace = portal_event_namespace
        portal_event_name      = portal_event_name
        view                   = view
        action                 = portal_event_action_name.
  data node                              type ref to if_wd_context_node.
  data portal_event_namespace type string.
  data portal_event_name          type string.
  data portal_event_parameter   type string.
  portal_event_namespace = wdevent->get_string('PORTAL_EVENT_NAMESPACE').
  portal_event_name          = wdevent->get_string('PORTAL_EVENT_NAME').
  portal_event_parameter   = wdevent->get_string('PORTAL_EVENT_PARAMETER').
  node = wd_context->get_child_node( name = 'PORTAL_EVENT_DATA' ).
  node->set_attribute( exporting name = 'PORTAL_EVENT_NAME' value = portal_event_name ).
  node->set_attribute( exporting name = 'PORTAL_EVENT_PARAMETER' value =                         portal_event_parameter ).