Help Needed regarding Mandatory Field.

Question

Hi All,
I have requirement that i have to make certain feilds mandatory in my WD4A view. I have made the "state" property of the fields(input element) as "required". Then i tried doing an event on the view to check whether it throws an error, stating mandatory fields are blank, but i dint get any message.
Please help me to understand whether what i did is suffice or i need to handle the mandatory concept through my code.
Thanks,
Selvakumar M.,

Answer 1

Hi Selva,
You need to call the static method check_mandatory_attr_on_view of class cl_wd_dynamic_tool. This would then automatically verify if all the mandatory fields have been filled or not. It would then populate the error messages into an internal table and display them in the view. Also the mandatory fields which haven't been filled would be highlighted with a red border. You need to put the below coding into the action up on which you want to trigger the data chesks.
data: lt_msg TYPE cl_wd_dynamic_tool=>t_check_result_message_tab,
          lo_view_controller TYPE REF TO if_wd_view_controller,
          lo_message_manager type ref to if_wd_message_manager.
  lo_view_controller ?= wd_this->wd_get_api( ).
  lo_message_manager = lo_view_controller->get_message_manager( ).
  cl_wd_dynamic_tool=>check_mandatory_attr_on_view(
    EXPORTING
      view_controller = lo_view_controller
      display_messages = abap_true
    IMPORTING
      messages = lt_msg ).
Regards,
Uday