sto ottenendo il seguente errore: SystemStackError: stack level too deep
quando si esegue il seguente codice nel rails3 beta4
sotto ruby 1.9.2-rc1
:Perché ricevo un "SystemStackError: livello di stack troppo in profondità" nel mio Rails3 beta4 modello
ruby-1.9.2-rc1 > f = Forum.all.first
=> #<Forum id: 1, title: "Forum 1", description: "Description 1", content: "Content 1", parent_id: nil, user_id: 1, forum_type: "forum", created_at: "2010-07-17 04:39:41", updated_at: "2010-07-17 04:39:41", icon_file_name: nil, icon_content_type: nil, icon_file_size: nil, icon_updated_at: nil>
ruby-1.9.2-rc1 > f.children
=> [#<Forum id: 2, title: "Thread 2", description: "Description 2", content: "Content 2", parent_id: 1, user_id: 1, forum_type: "thread", created_at: "2010-07-17 04:40:17", updated_at: "2010-07-17 04:40:17", icon_file_name: nil, icon_content_type: nil, icon_file_size: nil, icon_updated_at: nil>]
ruby-1.9.2-rc1 > f.forum_type = "thread"
=> "thread"
ruby-1.9.2-rc1 > f.save
SystemStackError: stack level too deep
from /Users/emilkampp/.rvm/rubies/ruby-1.9.2-rc1/lib/ruby/1.9.1/irb/workspace.rb:80
Maybe IRB bug!!
ruby-1.9.2-rc1 >
E questo è causato dal seguente codice:
# Before and after filters
#
before_update :update_all_nested_objects, :if => :forum_type_changed?
protected
# Checks if the +forum_type+ has been changed
#
def forum_type_changed?
self.forum_type_changed?
end
# Updates all nested upjects if the +forum_type+ has been changed
#
# This will trigger the +update_all_nested_objects+ method on all touched children, thus
# starting a chain-reaction all the way through the forum-tree.
#
# NOTE: This is where the error is triggered, since this is the only non-tested looping code, and my test-
# cases hasn't changed since this was added.
#
def update_all_nested_objects
children.each do |child|
child.forum_type = child_type
child.save
end
end
Quindi, cosa sta succedendo. Ho controllato un po ', ma nessuno sembra avere lo stesso problema. O non è la stessa versione rubino, quindi il file workflow.rb è diverso, oppure lo stack level to deep
è causato da qualcos'altro.
Qualsiasi aiuto sarà molto apprezzato!
migliori saluti
// Emil