我正在尝试将旧的Rails应用程序（Rails版本1.3.2）更新到Rails 2.2.2。并在运行服务器时出现此错误
undefined method `cache_template_extensions=' for ActionView::Base:Class (NoMethodError)
我的完整错误堆栈
/usr/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/initializer.rb:530:in `send': undefined method `cache_template_extensions=' for ActionView::Base:Class (NoMethodError)
from /usr/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/initializer.rb:530:in `initialize_framework_settings'
from /usr/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/initializer.rb:529:in `each'
from /usr/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/initializer.rb:529:in `initialize_framework_settings'
from /usr/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/initializer.rb:526:in `each'
from /usr/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/initializer.rb:526:in `initialize_framework_settings'
from /usr/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/initializer.rb:154:in `process'
from /usr/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/initializer.rb:112:in `send'
from /usr/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/initializer.rb:112:in `run'
from /home/pavan/eclipse_workspace/TCL MITHAPUR/config/environment.rb:15
from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
from /usr/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/dependencies.rb:153:in `require'
from /usr/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/dependencies.rb:521:in `new_constants_in'
from /usr/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/dependencies.rb:153:in `require'
from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/rails.rb:147:in `rails'
from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:113:in `cloaker_'
from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:149:in `call'
from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:149:in `listener'
from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:99:in `cloaker_'
from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:50:in `call'
from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:50:in `initialize'
from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:84:in `new'
from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:84:in `run'
from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel/command.rb:212:in `run'
from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:281
from /usr/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/dependencies.rb:142:in `load_without_new_constant_marking'
from /usr/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/dependencies.rb:142:in `load'
from /usr/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/dependencies.rb:521:in `new_constants_in'
from /usr/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/dependencies.rb:142:in `load'
from /usr/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/commands/servers/mongrel.rb:64
from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
from /usr/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/dependencies.rb:153:in `require'
from /usr/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/dependencies.rb:521:in `new_constants_in'
from /usr/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/dependencies.rb:153:in `require'
from /usr/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/commands/server.rb:49
from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
from script/server:3
更新
从config / environments / development.rb中删除了行config.action_view.cache_template_extensions = false并运行服务器，但该URL显示默认Rails 'Welcome Aboard Page'。我错过了吗？
任何帮助将不胜感激。在此先感谢！
答案 0 :(得分：2)
删除此行（来自config / environments / development.rb或config / environment.rb:15）
config.action_view.cache_template_extensions = false