I’m designing the access control model for a new case management system in OutSystems and trying to decide between a role-based approach versus a more granular permission-based approach. Our use case involves multiple departments with overlapping responsibilities and complex audit requirements.
The challenge is that we have situations where users need different levels of access depending on the case type, department, and current case status. For example, a supervisor in Department A might need full access to cases in their department but only read access to Department B cases. Meanwhile, compliance officers need audit access across all departments but shouldn’t be able to modify cases.
I’m leaning toward a hybrid model where we define broad roles (Supervisor, Case Worker, Compliance Officer) but then layer permissions on top for granular control. However, I’m concerned about the complexity this creates for both configuration and ongoing user management. The audit trail automation also needs to track both role-based and permission-based access decisions.
What approaches have others used successfully? Is there a best practice for balancing simplicity in user group management with the flexibility needed for complex access scenarios?
I’ve implemented both approaches in different projects. Pure role-based is simpler to manage but quickly becomes unwieldy when you have complex access requirements. You end up with role explosion - creating dozens of specific roles for every combination of access needs. Permission-based gives you flexibility but requires more sophisticated user group management. The hybrid approach you’re considering is actually the industry standard for enterprise case management systems.
For role-permission mapping, I recommend starting with broad functional roles based on job functions, then using permissions to handle the edge cases. In your example, define roles like “Department Supervisor” and “Compliance Officer”, then add permissions like “cross_department_read” or “audit_only_access”. OutSystems makes this easy with its built-in role and permission entities. The key is keeping your role hierarchy shallow - no more than 3 levels deep - or maintenance becomes a nightmare.
From an audit trail automation perspective, the hybrid model actually works well if you implement it correctly. The key is logging both the role assignment and the effective permissions at the time of access. OutSystems can automatically track this if you configure your audit entities properly. Make sure your audit trail captures: who accessed what, via which role, with which permissions active, and what actions they performed. This gives you full traceability without making the access control model itself overly complex.