topic Re: Change data type for select-option while runtime in Application Development and Automation Discussions

Change data type for select-option while runtime

Former Member — Thu, 04 Jun 2009 13:13:23 GMT

Hey Guys,

I have a quit difficult problem. I created a report with variable select options and using the SAP standart process to select fields from a customer table for selection (like in SE16). This works fine for me. But the problem is, that I would like to create the report as usefull as possible and so I want to allow user to change the selection fields while the selection screen is displayed. For example:

SELECT-OPTION: SO1 LIKE SEL1.

INITIALISATION.

SEL1 = '/SAPAPO/MATKEY-MATID'.

This works fine! But know I want to change the data type after it was generated:

SELECT-OPTION: SO1 LIKE SEL1.

INITIALISATION.

SEL1 = '/SAPAPO/MATKEY-MATID'.

SELECTION SCREEN OUTPUT.

SEL1 = '/SAPAPO/MATKEY-MATNR'.

Here is the problem. I dont get any error message or something like that, but nothing happends. I guess it is because I already signed a data type to the select option SO1 and it does not overwrite this. Is there any chance to modify the select options while the selection screen is displayed?

Thanks

Andy

Re: Change data type for select-option while runtime

former_member215917 — Thu, 04 Jun 2009 13:29:29 GMT

Hi Andreas,

Please check following code. It changes output field to PSPNR from MATNR at selection screen.

DATA : lv_char TYPE char100.

SELECT-OPTIONS : sel FOR (lv_char).

AT SELECTION-SCREEN OUTPUT.

lv_char = 'PRPS-PSPNR'.

INITIALIZATION.

lv_char = 'MARA-MATNR'.

Let me know if it helps.

Gouri.

Re: Change data type for select-option while runtime

Former Member — Thu, 04 Jun 2009 15:11:10 GMT

Hi,

wat ever the final variable where you want to store declare it as string.

Thanks & Regards,

Sateesh.

Re: Change data type for select-option while runtime

Former Member — Fri, 05 Jun 2009 06:35:56 GMT

Dear Gouri,

that is exactly what I described. I can change the contend of the field SEL1 but it would not change the data type of SO_1...

Dear Sateesh,

I know how to declare the field SEL_1 that is not the problem and it works but I dont want to change anything at the declaration for this field than for select option SO_1.

Thanks both for the answer.

Re: Change data type for select-option while runtime

former_member215917 — Fri, 05 Jun 2009 07:08:37 GMT

Hi Andreas,

Can you explain me why you want change data of select-option itself and not the other way around? bacause if you change value in char/string variable, data type of select-option will automatically change.

Gouri.

Re: Change data type for select-option while runtime

Former Member — Fri, 05 Jun 2009 07:17:41 GMT

Hi Gouri,

that is exactly the point. The data type of the select option will not change automatically. When I put MATNR into the string field and the select option was generated with the type "MATNR" I can change the value of the string field as many times as I want, the select option will everytime be "MATNR" no matter what is contend of the string field.

Step 1: SELECT-OPTION: SO1 LIKE (SEL_1) -> SEL_1 is "MATNR", than SO1 will be like "MATNR"

Step 2: SELECT-OPTION: SO1 LIKE (SEL_1) -> SEL_1 is "LOCNO", than SO1 will also be like "MATNR" and nothing was changed. That is what I want to change.

Best regards

Andy

Re: Change data type for select-option while runtime

former_member215917 — Fri, 05 Jun 2009 08:06:58 GMT

Hi Andreas,

If I understand the requirement correctely, SO1 should change as per sel1 and this is what will happen. when you say sel1 = 'MARA-MATNR', SO1 will behave like MATNR and when you change sel1 to 'LOCNO', SO1 should behave like 'LOCNO'.

Also, I am not sure whether we can use code like :

select-option: so1 like (sel_1).

I suppose it is SELECT-OPTIONS : so1 FOR (sel1).

The code which I gave earlier was working exactely like this. You can try it once may be.

Gouri.

Re: Change data type for select-option while runtime

Former Member — Fri, 05 Jun 2009 08:12:08 GMT

Dear Gouri,

you understand the problem. But your code does not work. It is exactly the same as my code I described in the question itself and SO1 does not change when SEL1 was changed. That is the problem. And in my code SO1 LIKE (SEL1) works. I had problems with FOR, thats why I use LIKE.

Re: Change data type for select-option while runtime

Former Member — Fri, 05 Jun 2009 08:18:24 GMT

at first i want to add that your "requirement" is not a very common one, since people tend to work with tabs when wanting various selscreens.

Tho still you aint got no chance to change the datatype of a select option during runtime.

But what you can do is: have more select options on your selection screen, hide the ones you dont need. and if you need to change a select option from vbeln to matnr just hide the vbeln one and unhide the matnr one.

to hide/unhide screen fields go for a "Loop at screen" statement in event AT SELECTION-SCREEN OUTPUT.

Re: Change data type for select-option while runtime

Former Member — Fri, 05 Jun 2009 08:24:54 GMT

Hi Florian,

I know that I do not choose the best way to do it, but the program has to be as independend as possible, so that I have to create the seletion options dynamicaly...

I thought about the way to do it right before you answered the post and so I'm on it to try it like that. Btw, LOOP AT SCREEN was in before I am now creating a table with the selections and a filed called "Display" where all possible selections where in and just the ones, that needs to be displayed will be visible at the selection screen.

Best regards.

Andy