How to validate an amount field in an input form in webdynpro?

[Former Member]

Hi,

  By default it is taking 0.00 when I make it  blank .so in the if....else condition it also taking 0.00 when the user leave it blank .So how to validate the field before submit.

[Former Member]

Hi Debo,

FYI,

As of Release 7.0, EhP2, the use of data type CURR is no longer recommended. For currencies, use one of the data types fordecimal floating point numbers instead. The correct currency formatting is supported on screens by output styles and in ABAP programs by appropriate formatting for the MONETARYand EXTENDED_MONETARY options. This always records amounts in the main unit of the currency, unlike the data type CURR (or DEC, or the ABAP type p).

So for your currency field you can use attribute of type : decfloat34

PFB the validation example in my test component

My layout design

OnEnter( ) action, I've written following code.

METHOD onactiontet .



  DATA lo_el_context         TYPE REF TO if_wd_context_element.

  DATA ls_context            TYPE wd_this->element_context.

  DATA lv_curr               TYPE wd_this->element_context-curr.

  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.



*   get element via lead selection

  lo_el_context = wd_context->get_element( ).



*   get single attribute

  lo_el_context->get_attribute(  EXPORTING   name =  `CURR` IMPORTING   value = lv_curr ).



  IF lv_curr IS INITIAL.

*     report message

    CALL METHOD lo_message_manager->raise_error_message

      EXPORTING

        message_text = 'Provide Currecny'.



  ENDIF.





ENDMETHOD.

Output:

1)My initial screen is as follows

2)On press of enter on input currecnt field without providing any currecny , following is the error.

Hope this helps you.

Thanks

KH

[former_member184578]

Hi,

By default, amount type will be 0. Just read that attribute using get_attribute( ) method and check if it is initial. if lv_amount is initial.

Or, After reading,  are you assigning it to a local variable of type string.? Use the same amount type and check if it is initial or not.

Regards,

Kiran