Validations before any user action in ALV

[Former Member]

Hi All,

I have created an ALV using CL_GUI_ALV_GRID->set_table_for_first_display

I have 2 editable fields which should be made mandatory.

I have to validate if these fields are filled and the data is proper.

If the user tries to select any of the tool bar events like PRINT & EXPORT without filling the mandatory fields then it should not allow the action.

Please suggest

Regards,

Deepti

Edited by: Deepti Vohra on Jan 7, 2011 7:06 AM

[Former Member]

Are the fields your ALV layout fields or selection-screen fields ?

You can check if that field is INITIAL or NOT-INITIAL at USER-COMMAND

[Former Member]

Hi Manas,

The fields are ALV fields.

[Former Member]

Fine...

Then use SY-UCOMM and check if the fields are initial or not. Add your logic further.

IF sy-ucomm = 'PRINT'.
          IF <field> is initial.
         MESSAGE e000 WITH text-001.
          ENDIF.
          ENDIF.

Edited by: K.Manas on Jan 7, 2011 7:31 AM

[Former Member]

you can use handle data change finished method. at this time ur alv data table will be updated with all the changes user has done. but the thing is this will only get triggered if there is a data change. if your using the standard user command buttons you might need to check another method which will get triggered before the functionality is called

[Former Member]

Hi Nafran,

What you have said is right. I am searching for a way when user does not enter the mandatory fields and presses the tollbar buttons.

Regards,

Deepti

[raymond_giuseppi]

Try to manage event [BEFORE_USER_COMMAND|http://www.sdn.sap.com/irj/scn/advancedsearch?query=before_user_command]. (SAP documentation via F1 or [before_user_command|http://help.sap.com/saphelp_NW70EHP1core/helpdata/en/ee/c8e059d52611d2b468006094192fe3/frameset.htm] in [ALV Grid Control|http://help.sap.com/saphelp_NW70EHP1core/helpdata/en/bf/3bd1369f2d280ee10000009b38f889/frameset.htm]) - you may require to call also method [check_changed_data|http://www.sdn.sap.com/irj/scn/advancedsearch?query=check_changed_data] to raise [data_changed|http://www.sdn.sap.com/irj/scn/advancedsearch?query=data_changed] event before performing checks.

Regards,

Raymond

[Former Member]

Hi Deepti,

In the PAI of screen, for user command PRINT, call method check_changed_data before performing validations.

If ok_code = 'PRINT'.

CALL METHOD v_grid->check_changed_data(

IMPORTING

e_valid = lf_valid ).

• This will capture if any values are changed in ALV

• Then you can perform your validations here

endif.

You also need to register the edit event after calling set_table_for_first_display in PBO

CALL METHOD v_grid->register_edit_event

EXPORTING

i_event_id = cl_gui_alv_grid=>mc_evt_modified.

Thanks

Radhika

[Former Member]

Hi,

After validations are done I have to forward the data for printing.

Is ther any function module which behaves like the standard PRINT button functionality like displaying the print screen list pop up to enter the printer parameters like output device no. of copies and all...

Regrads,

Kusuma

[Former Member]

Not sure if you can do this :

You can check : GET_PRINT_PARAMETERS and SET_PRINT_PARAMETERS and NEW-PAGE PRINT ON PARAMETERS function modules

Edited by: K.Manas on Jan 7, 2011 9:37 AM

[Former Member]

Thank you Raymond,

The problem got resolved using before_user_command . In that I throw the error message and clear the function code of the toolbar button using

CALL METHOD go_alv2->set_user_command

EXPORTING

i_ucomm = space.

Thank you all for your replies.

Regards,

Deepti