import authz domain module

atst/models/workspace_user.py

@@ -0,0 +1,14 @@
+class WorkspaceUser(object):
+    def __init__(self, user, workspace_role):
+        self.user = user
+        self.workspace_role = workspace_role
+
+    def permissions(self):
+        atat_permissions = set(self.user.atat_role.permissions)
+        workspace_permissions = (
+            [] if self.workspace_role is None else self.workspace_role.role.permissions
+        )
+        return set(workspace_permissions).union(atat_permissions)
+
+    def workspace_id(self):
+        return self.workspace_role.workspace_id