topic Re: how to capture enter command for validation in Module pool in Application Development and Automation Discussions

how to capture enter command for validation in Module pool

Former Member — Tue, 20 Aug 2013 20:56:51 GMT

Hi ,

Can anybody please tell how to capture enter when trying to validate entries in module pool screen.My requirement was to create custom T-code to update two custom tables.I have done this requirement using custom container screen with ALV OOP.But now when trying to validate one of the table values which the user enters,I am able to do this requirement by doing validation when use clicks on sy-ucomm= 'save' and the 'check mark' icon on the top,but also the requirement is to validate it when the user enters value on one single field cell and hits enter ,it should pop up a error message then if it is a invalid entry. I am unable to do the validation when the enter key is pressed.Please suggest how to proceed with this?

Thanks

Sarita Panda

Re: how to capture enter command for validation in Module pool

FredericGirod — Wed, 21 Aug 2013 06:02:49 GMT

Hi Sarita,

there is event for ALV Oo, you could redefine it ..

or there is the module pool method :

CHAIN.

FIELD my_field.

ENDCHAIN.

it depends of your code.

regards

Fred

Re: how to capture enter command for validation in Module pool

Former Member — Wed, 21 Aug 2013 06:03:48 GMT

Hi,

1. Register data_changed event for your ALV grid.

SET HANDLER : ref_event_handler->on_data_changed_grid

FOR ref_grid_items,

2. Data_changed method definition

on_data_changed_grid FOR EVENT data_changed

OF /irm/cl_gui_alv_grid

IMPORTING er_data_changed

e_onf4

e_onf4_before

e_onf4_after,

3. Data_changed method implementation. Here set some new OK Code

METHOD on_data_changed_grid.

CALL METHOD cl_gui_cfw=>set_new_ok_code

EXPORTING

new_code = 'ENTR'.

ENDMETHOD.

You can do validations for OK code ENTR.

Regards,

Praveen

Re: how to capture enter command for validation in Module pool

Former Member — Wed, 21 Aug 2013 06:09:29 GMT

Hi Sarita,

If you are using OO ALV you can use the event DATA_CHANGED to validate the input as soon as the user leaves the field or press enter or tab,

There are lot of samples available...

http://scn.sap.com/docs/DOC-10353

Regards

Re: how to capture enter command for validation in Module pool

Venkat_Sesha — Wed, 21 Aug 2013 06:17:39 GMT

Hi Sarita,

Use the ALV Toolbar Buttons and Enable the SAVE button there. So that you can handle that data in the HANDLE_USER_COMMAND Method for Event USER_COMMAND.

If you want to make use of SAVE button on the SAP GUI Status then you need to make sure that what changes that he had made in the ALV Container.

For that purpose make use of HANDLE_DATA_CHANGE and HANDLE_DATA_CHANGE_FINISH Methods in the CL_GUI_ALV_GRID.

You can also do the 2 point in another way. Make sure that User Selects the Row in the ALV Container before he clicks SAVE button. To make the Selecting Button Enabled. You need to Pass

LVC_S_LAYO-SEL_MODE = 'D'.

Then When he clicks on SAVE call the Method GET_SELECTED_ROWS as shown below

CALL METHOD G_GRID->GET_SELECTED_ROWS
IMPORTING
ET_INDEX_ROWS = LT_ROWS.

Hope you got it... Happy Coding

Re: how to capture enter command for validation in Module pool

Former Member — Wed, 21 Aug 2013 06:39:09 GMT

Hi Saritha,

In module pool screen, you can define 'ENTER' fuction code in the pf status of the particular screen. It can be given in the 'Function Keys'.

We can capture the f-code and do requred validation in the PAI.

Regards

Re: how to capture enter command for validation in Module pool

Former Member — Thu, 22 Aug 2013 02:08:48 GMT

Hi ,

I tired with the solution mentioned in the link above http://scn.sap.com/docs/DOC-10353 using event handle_data_change ,Now it triggers based on the enter command and I can validate ,but I am stuck up with a issue here wherein when a message pops up as a "invalid entry" I have to hit enter 3 times to let the pop up go and then if I go back to the previous screen and come back to this validation screen and again if there is a invalid entry to let the pop up go it needs 6 enters this time and each time it increases. Could anyone please suggest how to eliminate this repeated calling of the handling data change event?

Thanks

Sarita Panda

Re: how to capture enter command for validation in Module pool

Former Member — Thu, 22 Aug 2013 03:43:44 GMT

Hi Saritha,

You can use case- endcase , when ok_code = 'ENTER' then write the code you need. If you want a popup to come then also it will work, say inside a perform you can write the validation rule, if not call the popup fm.

Regards,

Nivedita.

Re: how to capture enter command for validation in Module pool

sivaganesh_krishnan — Thu, 22 Aug 2013 04:09:54 GMT

Hi Sarita,

The best way to validate the fields is to write validation code inside CHAIN .. END CHAIN.

try seeing this link

http://scn.sap.com/message/4804973.

Or If u want to capture the 'ENTER' . try setting the PF status

Regards,

Sivaganesh

Re: how to capture enter command for validation in Module pool

Former Member — Thu, 22 Aug 2013 13:47:48 GMT

Hi ,

I tired with the solution mentioned in the link above http://scn.sap.com/docs/DOC-10353using event handle_data_change ,Now it triggers based on the enter command and I can validate ,but I am stuck up with a issue here wherein when a message pops up as a "invalid entry" I have to hit enter 3 times to let the pop up go and then if I go back to the previous screen and come back to this validation screen and again if there is a invalid entry to let the pop up go it needs 6 enters this time and each time it increases. Could anyone please suggest how to eliminate this repeated calling of the handling data change event?

Thanks

Sarita Panda