Change ALV variant dynamically

[kroly_horvth]

Hi,

I have an alv grid (class) showing some data + day01...day31 columns. I use the field catalog to turn off invalid dates, like day31 column for June.

However if I use default variant or any variant for the ALV, its settings I do in the build_field_catalog, is overwritten. Thus I cannot hide 31June (which is an invalid date).

Any suggestions how to modify fields in the variant's fieldcatalog and at what point?

Thanks,

Charlie

[kroly_horvth]

How do you "turn off invalid dates" exactly?

[RaymondGiuseppi]

Try to find an event like after_refresh then handle it to adapt field catalog, use methods like get_frontend_catalog and then set_frontend_catalog and trigger another refresh of the display if and only if you actually changed the catalog (no infinite loop).

Regards,

Raymond

[kroly_horvth]

This worked, THANKS, I set up a g_first_run flag to prevent infinite loop, which is fine with me.

[Chintu6august]

Hi,

use FM : 'NUMBER_OF_DAYS_PER_MONTH_GET'

pass month and year in it.. you will get the number of days.

then check if month have 31 days.

if days > 30.

add new field to the fieldcatalog internal table.

endif.

as you have modified the Fieldcatalog internal table at run time call the following methods

GET_FRONTEND_FIELDCATALOG, SET_FRONTEND_FIELDCATALOG methods and REFRESH_TABLE_DISPLAY.

thank you!!

[Jelena_Perfiljeva]

How do you "turn off invalid dates" exactly?

[kroly_horvth]

    CALL FUNCTION '/DSD/PR_LAST_DAY_OF_MONTHS'

Then in the field catalog I have DAY01...DAY31 fields and:

          ls_fcat-no_out = 'X'.

if the day is larger than the last day of the month.

[Juwin]

In such situations, I disable the option to save variants, so that users don't mess up the display and then start complaining saying, the display isn't working.

Thanks,

Juwin

[Patrick_vN]

Have you tried modifying the fieldcatolog at runtime and setting the column you wish to hide as technical?

[Clemenss]

Columns not to display can be marked tech = abap_true in field catalog. ALV layout variant can not override this.

Clemens