topic Re: Creating new variable with variant name in Application Development and Automation Discussions

Creating new variable with variant name

michael_fallenbchel — Thu, 10 Sep 2009 12:00:30 GMT

Hi experts,

I have a problem with my new function module:

I created a function module to easily make an ALV on a dynpro. In this function, I create the container (create object cl_gui_custom_container), and then the grid (create object cl_gui_alv_grid).

After thsi, I set the field catalogue, the layout...and then I made the ALV using method "set_table_for_first_display" of cl_gui_alv_grid.

No problem, everything works perfect. Until now: I have a dynpro with a tabstrip, in 2 of those tabs I want to have an ALV. I filled the tables, made the containers in the Tabs of the dynpro. BUt it won't work perfetct.

Problem now is that the function creates the container one time:

IF g_custom_container IS INITIAL.
    CREATE OBJECT g_custom_container
      EXPORTING
        container_name = container_name.
    CREATE OBJECT grid
      EXPORTING
        i_parent = g_custom_container.
  ENDIF.

The first table/ALV will be filled. Then the function will be called a second time (second ALV, an other Tab). Function comes to create the container - but it still exists. So no new container will be created, instead the data of the second table will be shown in the first ALV.

Ok, I tried to remove the if-statement (IF g_custom_container IS INITIAL.). OK, works, until I change data in one of the ALVs.

My idea is to create the container dynamically, with different names. I called the function this way:

CALL FUNCTION 'ZZ_CREATE_ALV'
    EXPORTING
      container_name = 'T_ALV'
      tab_name       = 'GT_FIELDS'
    CHANGING
      output_tab     = gt_fields.

container_name is the name of the container on the dynpro/tab, tab_name is the name of the used table (as string), and output_tab is the table itself.

Now, the question: is it possible to make the name if my variant (here, g_custom_container and grid) dynamic, for example tab_name + "_grid" -> GT_FIELDS_GRID? Or any other ideas?

Thanks for your help

Michael

Re: Creating new variable with variant name

Sandra_Rossi — Mon, 14 Sep 2009 08:40:25 GMT

Just use an internal table. First line for first ALV, second line for second ALV.

Re: Creating new variable with variant name

michael_fallenbchel — Mon, 14 Sep 2009 08:58:51 GMT

Hi Sandra,

first - thanks for your answer.

But I'm not sure if I understand you right:

Where should I use this table? Could you explain it a little bit more?

Re: Creating new variable with variant name

Sandra_Rossi — Mon, 14 Sep 2009 10:03:50 GMT

Okay, I try. For example, in your function module add a new importing parameter ALV_ID to identify the ALV. The new internal table (GT_IT) has 3 fields, alv_id, o_container, o_alv_grid. In your function module, instead of IF ... IS INITIAL, you write:


READ TABLE gt_it INTO gs_it WITH KEY alv_id = alv_id.
IF sy-subrc <> 0.
* create container (gs_it-o_container) and alv control (gs_x-o_alv_grid)
...
APPEND gs_it TO gt_it.
ENDIF.
...
* gs_it-o_alv_grid->method( ... ).

Re: Creating new variable with variant name

michael_fallenbchel — Mon, 14 Sep 2009 10:14:08 GMT

OK Sandra,

now it's much clearer!

But one thing I have to ask - how to fill this internal table?

Michael

Re: Creating new variable with variant name

michael_fallenbchel — Mon, 14 Sep 2009 11:37:44 GMT

I found the way to do!

Thank you very much Sandra