To create an editable ALV using the procedural approach, we use the REUSE_ALV_GRID_DISPLAY function module. However, to make cells editable, we must use a Field Catalog.

In a field catalog, you define the properties of each column. By setting the EDIT field to ‘X’, the cell becomes an input field.

The ABAP Code

REPORT z_editable_alv_procedural.

* 1. Data Declaration

TABLES: sflight.

DATA: it_sflight TYPE TABLE OF sflight,

      it_fieldcat TYPE slis_t_fieldcat_alv, ” Internal table for field catalog

      wa_fieldcat TYPE slis_fieldcat_alv.    ” Work area for field catalog

* 2. Data Retrieval

START-OF-SELECTION.

  SELECT * FROM sflight INTO TABLE it_sflight UP TO 20 ROWS.

* 3. Building the Field Catalog manually to enable editing

  ” Define Column: Flight Connection ID

  CLEAR wa_fieldcat.

  wa_fieldcat-fieldname = ‘CONNID’.

  wa_fieldcat-seltext_m = ‘Connection ID’.

  wa_fieldcat-tabname   = ‘IT_SFLIGHT’.

  APPEND wa_fieldcat TO it_fieldcat.

  ” Define Column: Price (Make this EDITABLE)

  CLEAR wa_fieldcat.

  wa_fieldcat-fieldname = ‘PRICE’.

  wa_fieldcat-seltext_m = ‘Flight Price’.

  wa_fieldcat-tabname   = ‘IT_SFLIGHT’.

  wa_fieldcat-edit      = ‘X’. ” This makes the column editable

  APPEND wa_fieldcat TO it_fieldcat.

* 4. Display ALV Report

  CALL FUNCTION ‘REUSE_ALV_GRID_DISPLAY’

    EXPORTING

      it_fieldcat   = it_fieldcat

    TABLES

      t_outtab      = it_sflight

    EXCEPTIONS

      program_error = 1

      OTHERS        = 2.

How the Editability Works

• The Field Catalog (slis_t_fieldcat_alv): Unlike the previous example where we passed i_structure_name, here we manually define the columns. This is necessary because the standard structure is “read-only” by default.
• The EDIT Flag: By setting wa_fieldcat-edit = ‘X’, the ABAP runtime renders that specific column as an input field (usually with a white background instead of grey).
• Data Synchronization: When the user types a new value in the grid and presses “Enter” or “Save,” the values are updated in the internal table it_sflight in the program’s memory.

Important Note on Saving

• The code above makes the screen editable, but it does not save changes to the database. To save data, you would need to:
• Add a custom button to the ALV toolbar (using a PF-STATUS).
• Capture the user action in a USER_COMMAND subroutine.
• Execute an UPDATE sflight … statement using the modified data in it_sflight.