次のエラーが発生します:SystemStackError: stack level too deep
の下のRails3 beta4
で次のコードを実行するとRuby 1.9.2-rc1
:
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 >
そしてそれは次のコードによって引き起こされます:
# 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
どうしたの。少し調べてみましたが、誰も同じ問題を抱えているようには見えません。同じRubyバージョンではないため、workflow.rbファイルが異なるか、stack level to deep
が別の原因で発生しています。
どんな助けでも大いに感謝されます!
宜しくお願いします
//エミル
メソッド自体で同じメソッドを呼び出しています
def forum_type_changed?
self.forum_type_changed? #This will never ending process hence it gives error
end
同じmethod name
とcolumn name
があり、問題の原因でメソッド名を変更していると思います。
def check_forum_type_changed?
self.forum_type_changed? #method name and column name are different
end