You can control access to specific form fields based on the user user's roles.
Using and accessing roles
$fr-roles XPath variable can be used in formulas controlling whether a field or section is visible or readonly.
$fr-roles contains the list (as an XPath sequence) of roles of the current user, if any. Each role is represented as a string.
You can make a control non-visible to the current user by defining a visibility expression that returns
false(). If the control is visible, you can make it readonly to current user by defining a readonly expression that returns
The following "Visibility" expression makes a section visible only if one of the roles has value
$fr-roles = 'admin'
Due to the logic of XPath comparison on sequences, this expression returns
true() if at least one of the roles is
admin, even if there are other roles available.
TODO: more examples (in particular using