Allow event leaders to see the layer group of all participants

app/domain/pbs/table_displays/people/layer_group_label_column.rb

@@ -0,0 +1,15 @@
+#  Copyright (c) 2023, Pfadibewegung Schweiz. This file is part of
+#  hitobito_pbs and licensed under the Affero General Public License version 3
+#  or later. See the COPYING file at the top-level directory or at
+#  https://github.com/hitobito/hitobito_pbs.
+
+module Pbs::TableDisplays::People
+  module LayerGroupLabelColumn
+    protected
+
+    def allowed?(object, attr, original_object, original_attr)
+      # In events, evaluate the permission on the participation, not on the person
+      ability.can? required_permission(attr), original_object
+    end
+  end
+end

lib/hitobito_pbs/wagon.rb

@@ -74,6 +74,10 @@ class Wagon < Rails::Engine
 
       Salutation.prepend Pbs::Salutation
 
+      TableDisplays::People::LayerGroupLabelColumn.prepend(
+        Pbs::TableDisplays::People::LayerGroupLabelColumn
+      )
+
       ### abilities
       Ability.store.register Event::ApprovalAbility
       AbilityDsl::UserContext::GROUP_PERMISSIONS << :crisis_trigger