ActionView::Template::Error（无法就地修改 SafeBuffer）haml devise

Question

在我使用捆绑器更改了安装的所有 gem 中的 Gemfile 后，我注意到一个错误：

TypeError in Devise/sessions#new
Showing /home/mark/workspace/fleet/app/views/layouts/application.html.haml where line # raised:
Cannot modify SafeBuffer in place

服务器日志说：

16:22:12 Started GET "/users/sign_in" for 127.0.0.1 at 2011-08-22 16:22:12 +0200
16:22:12 action_controller Processing by Devise::SessionsController#new as HTML
16:22:12 active_record SQL (2.4ms)   SELECT a.attname, format_type(a.atttypid, a.atttypmod), d.adsrc, a.attnotnull
 FROM pg_attribute a LEFT JOIN pg_attrdef d
 ON a.attrelid = d.adrelid AND a.attnum = d.adnum
 WHERE a.attrelid = '"users"'::regclass
 AND a.attnum > 0 AND NOT a.attisdropped
 ORDER BY a.attnum
16:22:12 action_view Rendered devise/sessions/new.html.haml within layouts/application (47.8ms)
16:22:12 action_controller Completed 500 Internal Server Error in 101ms

16:22:12 ActionView::Template::Error (Cannot modify SafeBuffer in place):
16:22:12 action_view Rendered /home/mark/.rvm/gems/ruby-1.9.2-head@fleet/gems/actionpack-3.0.9/lib/action_dispatch/middleware/templates/rescues/_trace.erb (1.0ms)
16:22:12 action_view Rendered /home/mark/.rvm/gems/ruby-1.9.2-head@fleet/gems/actionpack-3.0.9/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb (299.0ms)
16:22:12 action_view Rendered /home/mark/.rvm/gems/ruby-1.9.2-head@fleet/gems/actionpack-3.0.9/lib/action_dispatch/middleware/templates/rescues/template_error.erb within rescues/layout (306.6ms)

我的 app/views/devise/sessions/new.html.haml 看起来像：

%h2 sign_in

我的 gem 文件看起来像： 来源 'http://rubygems.org'

gem 'rails', '3.0.9'
gem 'pg'
gem 'jquery-rails'
gem 'devise', :git => "git://github.com/plataformatec/devise.git"
gem 'capistrano'

gem 'rmagick'
gem 'carrierwave'
gem 'paper_trail'
gem 'kaminari'

gem 'haml'
gem 'cancan'

# FOR XLS MANIPULATION
gem 'rubyzip'
gem 'nokogiri'
gem 'roo'
gem 'to_xls'

我完全不知道发生了什么。我尝试谷歌搜索，但什么也没找到:-(如果有人有类似的问题或知道这个特定错误的解决方案，我将不胜感激分享:)

提前谢谢你！ 干杯

Answer 1

哈姆尔中的错误。 3.1.2版本已修复