可能重复:
Error loading Active Record gem with sinatra app using RVM
我有一个Faye应用程序,我想在其中使用ActiveRecord。我在我的faye.ru中有这个:
require "rubygems"
require "faye"
require "sqlite3"
require "activerecord"
... other code
我想通过以下方式启动它:rackup faye.ru -s thin -E production
此操作失败,并显示以下错误:/home/tempus/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in 'require': cannot load such file -- activerecord (LoadError)
。如果我运行rvm current
,我会得到:ruby-1.9.3-p125@pno
。如果我在rvm目录上为这个gemset做了一个ls,我可以看到确实安装了activerecord:
actionmailer-3.2.2 builder-3.0.0 hike-1.2.1 polyglot-0.3.3 sprockets-2.1.2
actionpack-3.2.2 cookiejar-0.3.0 http_parser.rb-0.5.3 rack-1.4.1 sqlite3-1.3.5
activemodel-3.2.2 em-http-request-1.0.2 i18n-0.6.0 rack-cache-1.2 thor-0.14.6
activerecord-3.2.2 em-socksify-0.1.0 journey-1.0.3 rack-ssl-1.3.2 tilt-1.3.3
activeresource-3.2.2 erubis-2.7.0 json-1.6.6 rack-test-0.6.1 treetop-1.4.10
activesupport-3.2.2 eventmachine-1.0.0.beta.4 mail-2.4.4 rails-3.2.2 tzinfo-0.3.32
addressable-2.2.7 faye-0.8.1 mime-types-1.18 railties-3.2.2 yajl-ruby-1.1.0
arel-3.0.2 faye-websocket-0.4.4 multi_json-1.2.0 rdoc-3.12
我无法理解为什么会说它无法找到activerecord。有线索吗?
答案 0 :(得分:13)
即使gem被称为activerecord
,该类也被称为ActiveRecord
,在蛇案例中转换为active_record
:
require 'active_record'