16736: Simplifies conditionals.

[arvados.git] / services / api / app / models / group.rb

diff --git a/services/api/app/models/group.rb b/services/api/app/models/group.rb
index e16433c8157660d7a486879555ef61406557d772..7e015f3564e7475f6103e8f4a42c5beb5bf53c83 100644 (file)
--- a/services/api/app/models/group.rb
+++ b/services/api/app/models/group.rb
@@ -25,6 +25,8 @@ class Group < ArvadosModel
   before_update :before_ownership_change
   after_update :after_ownership_change
 
+  after_create :add_role_manage_link
+
   after_update :update_trash
   before_destroy :clear_permissions_and_trash
 
@@ -55,7 +57,7 @@ class Group < ArvadosModel
   end
 
   def update_trash
-    if trash_at_changed? or owner_uuid_changed?
+    if saved_change_to_trash_at? or saved_change_to_owner_uuid?
       # The group was added or removed from the trash.
       #
       # Strategy:
@@ -95,7 +97,7 @@ on conflict (group_uuid) do update set trash_at=EXCLUDED.trash_at;
   end
 
   def after_ownership_change
-    if owner_uuid_changed?
+    if saved_change_to_owner_uuid?
       update_permissions self.owner_uuid, self.uuid, CAN_MANAGE_PERM
     end
   end
@@ -114,4 +116,33 @@ delete from trashed_groups where group_uuid=$1
     end
     true
   end
+
+  def ensure_owner_uuid_is_permitted
+    if group_class == "role"
+      @requested_manager_uuid = nil
+      if new_record?
+        @requested_manager_uuid = owner_uuid
+        self.owner_uuid = system_user_uuid
+        return true
+      end
+      if self.owner_uuid != system_user_uuid
+        raise "Owner uuid for role must be system user"
+      end
+      raise PermissionDeniedError unless current_user.can?(manage: uuid)
+      true
+    else
+      super
+    end
+  end
+
+  def add_role_manage_link
+    if group_class == "role" && @requested_manager_uuid
+      act_as_system_user do
+       Link.create!(tail_uuid: @requested_manager_uuid,
+                    head_uuid: self.uuid,
+                    link_class: "permission",
+                    name: "can_manage")
+      end
+    end
+  end
 end