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Version: 4.x

EXTEND FORM statement

The EXTEND FORM statement extends an existing form.

Syntax​

EXTEND FORM formName 
    formBlock1
    ...
    formBlockN
;

Description​

The EXTEND FORM statement allows you to extend an existing form with additional form blocks.

Parameters​

  • formName

    The name of the form being extended. Composite ID.

  • formBlock1 ... formBlockN

    Form blocks.

Example​

CLASS ItemGroup;
name = DATA ISTRING[100] (ItemGroup);

itemGroup = DATA ItemGroup (Item);

EXTEND FORM items
    PROPERTIES(i) NEWSESSION DELETE // adding a delete button to the form

    OBJECTS g = ItemGroup BEFORE i // adding a product group object to the form before the product
    PROPERTIES(g) READONLY name
    // if the object was added after the object with products, then filtering would go by the group of products, 
    // and not by products
    FILTERS itemGroup(i) == g 
;