Traffic Light in ALV Reports

Many a times we have to display a traffic light in ALV report. We can do that easily using "Exceptions" parameter provided by SAP. But it has one drawback, we cannot change the column header to something meaningful. It always set as "Exception" in case of ALV Grid and an icon in case of ALV List.

Here I'll show a workaround to show the traffic lights with a meaningful column header.

The exception display:


















The workaround is to use a field of type CHAR4 and display it as Icon.
To display a field as icon, in ALV Field catalog we have to mark ICON field as 'X'. The icons for traffic lights are : icon_green_light, icon_red_light and icon_yellow_light.


















The code :
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*&---------------------------------------------------------------------*
*& Report ZTEST_SOURAV_TRAFFIC_LIGHTS
*&
*&---------------------------------------------------------------------*
*&
*&
*&---------------------------------------------------------------------*

REPORT ztest_sourav_traffic_lights.
TYPE-POOLS: slis,icon.
TYPES: BEGIN OF x_sflight,
carrid TYPE s_carr_id,
connid TYPE s_conn_id,
fldate TYPE s_date,
price TYPE s_price,
currency TYPE s_currcode,
seatsmax TYPE s_seatsmax,
seatsocc TYPE s_seatsocc,
END OF x_sflight.
TYPES:BEGIN OF x_final,
icon TYPE char4.
INCLUDE TYPE x_sflight.
TYPES: END OF x_final.

DATA: i_sflight TYPE STANDARD TABLE OF x_sflight INITIAL SIZE 0,
i_final TYPE STANDARD TABLE OF x_final INITIAL SIZE 0,
i_fieldcat TYPE slis_t_fieldcat_alv,
wa_layout TYPE slis_layout_alv.


CONSTANTS: program TYPE syrepid VALUE sy-repid.

START-OF-SELECTION.
SELECT carrid " Airline Code
connid " Flight Connection Number
fldate " Flight date
price " Airfare
currency " Local currency of airline
seatsmax " Maximum capacity in economy class
seatsocc " Occupied seats in economy class
FROM sflight " Flight
INTO TABLE i_sflight.
IF sy-subrc <> 0.
MESSAGE i001(00) WITH 'No data found!'.
LEAVE LIST-PROCESSING.
ENDIF.


END-OF-SELECTION.

PERFORM populate_records.

PERFORM display_records.


*&---------------------------------------------------------------------*
*& Form populate_records
*&---------------------------------------------------------------------*
* Populate final table
*----------------------------------------------------------------------*
FORM populate_records .

DATA:
wa_sflight TYPE x_sflight,
wa_final TYPE x_final,
temp TYPE p DECIMALS 2.

LOOP AT i_sflight INTO wa_sflight.
CLEAR temp.
*Calculate Percentage of booked flights
temp = ( wa_sflight-seatsocc / wa_sflight-seatsmax ) .

IF temp > '0.9'.
*If booked more than 90%
wa_final-icon = icon_green_light.
ELSEIF temp < '0.2'.
*If booked less than 20%
wa_final-icon = icon_red_light.
ELSE.
*If its between 20% to 90 %
wa_final-icon = icon_yellow_light.
ENDIF.

wa_final-carrid = wa_sflight-carrid.
wa_final-connid = wa_sflight-connid.
wa_final-fldate = wa_sflight-fldate.
wa_final-price = wa_sflight-price.
wa_final-currency = wa_sflight-currency.
wa_final-seatsmax = wa_sflight-seatsmax.
wa_final-seatsocc = wa_sflight-seatsocc.

APPEND wa_final TO i_final.
CLEAR wa_final.
ENDLOOP.
FREE i_sflight.
ENDFORM. " populate_records
*&---------------------------------------------------------------------*
*& Form display_records
*&---------------------------------------------------------------------*
* Subroutines for Display
*----------------------------------------------------------------------*
FORM display_records .

PERFORM populate_field_catalog.

PERFORM populate_layout.

PERFORM trigger_alv.

ENDFORM. " display_records
*&---------------------------------------------------------------------*
*& Form populate_field_catalog
*&---------------------------------------------------------------------*
* Popualte Field Catalog
*----------------------------------------------------------------------*
FORM populate_field_catalog .
DATA:
wa_fieldcat TYPE slis_fieldcat_alv.
DEFINE fcat_merge.

wa_fieldcat-col_pos = &1.
wa_fieldcat-fieldname = &2.
if wa_fieldcat-fieldname = 'ICON'.
wa_fieldcat-icon = 'X'. " Display the field as ICON
wa_fieldcat-seltext_m = 'Occupency Status'. " Column Header
wa_fieldcat-inttype = 'C'.
wa_fieldcat-outputlen = '4'.
endif.

wa_fieldcat-ref_fieldname = &3.
wa_fieldcat-ref_tabname = &4.

if wa_fieldcat-fieldname = 'PRICE'.
wa_fieldcat-cfieldname = 'CURRENCY'.
wa_fieldcat-ctabname = 'I_FINAL'.
endif.

append wa_fieldcat to i_fieldcat.
clear wa_fieldcat.
END-OF-DEFINITION.

fcat_merge: '1' 'ICON' '' '',
'2' 'CARRID' 'CARRID' 'SFLIGHT',
'3' 'CONNID' 'CONNID' 'SFLIGHT',
'4' 'FLDATE' 'FLDATE' 'SFLIGHT',
'5' 'PRICE' 'PRICE' 'SFLIGHT',
'6' 'CURRENCY' 'CURRENCY' 'SFLIGHT',
'7' 'SEATSMAX' 'SEATSMAX' 'SFLIGHT',
'8' 'SEATSOCC' 'SEATSOCC' 'SFLIGHT'.

ENDFORM. " populate_field_catalog

*&---------------------------------------------------------------------*
*& Form populate_layout
*&---------------------------------------------------------------------*
* Populate LAYOUT Structure for ALV
*----------------------------------------------------------------------*
FORM populate_layout.
wa_layout-zebra = 'X'.
wa_layout-colwidth_optimize = 'X'.
ENDFORM. "populate_layout
*&---------------------------------------------------------------------*
*& Form trigger_alv
*&---------------------------------------------------------------------*
* Trigger the ALV API
*----------------------------------------------------------------------*
FORM trigger_alv .

CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
EXPORTING
i_callback_program = program
is_layout = wa_layout
it_fieldcat = i_fieldcat
TABLES
t_outtab = i_final
EXCEPTIONS
program_error = 1
OTHERS = 2.
IF sy-subrc <> 0.
MESSAGE i001(00) WITH 'Error while displaing ALV'.
LEAVE LIST-PROCESSING.
ENDIF.
ENDFORM. " trigger_alv

5 comments:

Anonymous said...

Thanks, this helped alot!

rama said...

Hai...nice work dude..i have a doubt here...is it possible to change the position of the Exception field,i mean i want to display it as second field..is it possible? am not able to do it

Best regards,
rama

Anonymous said...

HI , Thank you very much. It helped me a lot.

Ram Shanker said...

It is really useful for every abapers either new or experienced. Thanks and hope that always post some useful tips like this.

Ram

yektek training said...

nice post thank you so much

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