If you need to restrict end-user access to specific areas or operations in an application, you must validate their permissions. In OutSystems, for Web applications, you can do that based on roles to control access to screens, screen elements or actions.
To validate the permissions of end-users to screens of the application:
- Open the screen;
- On the Properties editor, select the end-user roles that can view the screen.
To validate the permissions of end-users to screen elements or actions of the application, use the CheckRole built-in functions to determine if the end-user has the necessary roles. You can use these functions to:
- Hide or display the interface elements using If elements;
- Block or allow executing the actions.
Example in a Web App
In GoOutWeb, to find, review, and rate places, we have roles for regular end- users and managers. End-users can review existing places and suggest new places. Managers can also edit and remove places, operations which they can perform via a Dashboard screen. We want to guarantee only managers have access to the Dashboard so we have defined the PlaceManager role for this end-user group.
To restrict access to screens and operations from end-users that are not managers:
- Open the Dashboard screen and in the Properties editor, ensure that only the PlaceManager role is checked;
- To hide the link that gives access to the Dashboard screen in the menu of the application screens, open the Menu Block, select the link and enclose it in an If element;
- In the condition, verify if the user has the PlaceManager role by using the function CheckPlaceManagerRole. Display the link when the condition evaluates as True;
- To guarantee that the end-users cannot edit places, open the action Place_CreateOrUpdate and add an If tool. Check if the user has the PlaceManager role, as done in the step before. If yes, execute the action; otherwise, send a message reporting the cause and exit the action.