A Show_If column constraint may be used to show or hide a column value according to a condition. This column constraint doesn't control whether or not the column is displayed, just the value for a particular row.
Show_If is commonly used to:
- Hide columns that aren't intended for forms.
- Show only non-zero values in a column of numeric values.
- Show action buttons in only select views.
The Show_If expression
The Show_If column constraint is Yes/No expression: if the expression evaluates as TRUE, the column value will be shown; if FALSE, the column value will be hidden.
As in all column constraint expressions, the Show_If expression may refer to the current column value using the column value expression, [_THIS]. For instance, if the current column is Employee Name, [Employee Name] and [_THIS] both refer to the same value.
Scope of Show_If
The Show_If column constraint is applied any time the column itself is displayed. The column constraint is not applied to the column value when used in an expression.
Show_If conditions can enabled for only form views or for the entire app. To control this behavior, set the Apply show-if constraints universally when configuring form view type settings.