Hi , I relaunch the question about before_update. Actually, I develop, with other people, a rails application and I use the plugin BetterNestedSet. But we can''t use the callback before_update because of overwriting of method update by the plugin. In addition, the before_create and before_destroy method are defined in the plugins, so the user can''t define them. Before trying to correct these problems, we would like know if you have solutions or if you will make solutions in a near future. By example, we had thought to use class methods before_create and before_destroy like that: before_create {...}, instead of overwrite them. We would like contribute to the plugin development and, for example, help to make solutions of these problems. Finally, we create a non-recursive method to delete a node of a tree, move its children and renumber node''s left and right column. So, we would like give this method to the plugin project. Thanks for you help and your understanding. Sincerely yours, -- Aimeric PIETERS Epita 2009 lesotdudestin at gmail.com -------------- next part -------------- An HTML attachment was scrubbed... URL: http://rubyforge.org/pipermail/betternestedset-talk/attachments/20071025/b47b2a35/attachment.html