SET ALLOWED METHODS

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4D v18

SET ALLOWED METHODS


SET ALLOWED METHODS ( methodsArray )

Parameter	Type	Description
methodsArray	Text array	Array of method names

Description

The SET ALLOWED METHODS command designates the project methods that can be called directly from the application.

4D includes a security mechanism that filters callable project methods from the following contexts:

The formulas editor - allowed methods appear at the end of the list of default commands and can be used in formulas (see section Description of formula editor).
4D Write Pro documents - allowed methods can be used in dynamic expressions inserted in documents (see section Managing expressions).
The label editor - the allowed methods are listed in the Apply menu if they are also shared with the component (see section Description of label editor).
4D View Pro documents - by default, if the VP SET ALLOWED METHODS command has never been called during the session, 4D View Pro formulas only accept methods defined by SET ALLOWED METHODS. However, using VP SET ALLOWED METHODS is recommended. See Project method references.

By default, if you do not use the SET ALLOWED METHODS command, no method is callable (using an unauthorized method in an expression causes an error).

In the methodsArray parameter, pass the name of an array containing the list of methods to offer in the Formula editor. The array must have been set previously.

You can use the wildcard character (@) in method names to define one or more authorized method groups.

If you would like the user to be able to call 4D commands that are unauthorized by default or plug-in commands, you must use specific methods that handle these commands.

Note: Formula editor filtering access can be disabled for all users or for the Designer and Administrator via an option on the "Security" page of the Database Settings (see Data Access). If the "Disabled for all" option is checked, the SET ALLOWED METHODS command will have no effect.

Example

This example authorizes all methods starting with “formula” and the “Total_general” method to be executed by the user in protected contexts:

 ARRAY TEXT(methodsArray;2)

 methodsArray{1}:="formula@"

 methodsArray{2}:="Total_general"

 SET ALLOWED METHODS(methodsArray)