Improve admin interfaces.

mayan/apps/permissions/admin.py

@@ -5,10 +5,20 @@ from django.contrib import admin
 from .models import StoredPermission, Role
 
 
+@admin.register(Role)
+class RoleAdmin(admin.ModelAdmin):
+    def groups_list(self, instance):
+        return ','.join(instance.groups.values_list('name', flat=True))
+
+    def permissions_list(self, instance):
+        return ','.join(instance.permissions.values_list('name', flat=True))
+
+    filter_horizontal = ('groups', 'permissions')
+    list_display = ('label', 'permissions_list', 'groups_list')
+
+
+@admin.register(StoredPermission)
 class StoredPermissionAdmin(admin.ModelAdmin):
     list_display = ('namespace', 'name')
     list_display_links = list_display
-
-
-admin.site.register(StoredPermission, StoredPermissionAdmin)
-admin.site.register(Role)
+    list_filter = ('namespace',)