[英]Missing the Rails gem. Please `gem install -v=2.3.4 rails`
[英]script/console won't work; reports “Missing the Rails gem. Please `gem install -v= rails`…” even though rails shows as installed
我正在尝试学习RoR,并且运行脚本/控制台失败,返回:
加载开发环境(Rails 2.3.5)缺少Rails gem。 请使用gem install -v= rails
,更新config / environment.rb中的RAILS_GEM_VERSION设置以获取已安装的Rails版本,或注释掉RAILS_GEM_VERSION以使用最新安装的版本。
gem list
和sudo gem list
显示已安装的rails(2.3.5)。 此外,脚本/服务器工作正常。 我发现一些消息源表明问题可能出在机架(1.1.0)上,所以我恢复为1.0.1,但没有帮助。
我很喜欢你们提出的任何建议,因为即使到目前为止我只看过简短的内容,我也确实想学习RoR。
编辑:@ zed_0xff:
好的,这是./script/console --trace
的结果:
/usr/lib/ruby/1.8/optparse.rb:1450:in `complete': invalid option: --trace (OptionParser::InvalidOption)
from /usr/lib/ruby/1.8/optparse.rb:1448:in `catch'
from /usr/lib/ruby/1.8/optparse.rb:1448:in `complete'
from /usr/lib/ruby/1.8/optparse.rb:1261:in `parse_in_order'
from /usr/lib/ruby/1.8/optparse.rb:1254:in `catch'
from /usr/lib/ruby/1.8/optparse.rb:1254:in `parse_in_order'
from /usr/lib/ruby/1.8/optparse.rb:1248:in `order!'
from /usr/lib/ruby/1.8/optparse.rb:1339:in `permute!'
from /usr/lib/ruby/1.8/optparse.rb:1360:in `parse!'
from /var/lib/gems/1.8/gems/rails-2.3.5/lib/commands/console.rb:11
from /usr/lib/ruby/1.8/optparse.rb:791:in `initialize'
from /var/lib/gems/1.8/gems/rails-2.3.5/lib/commands/console.rb:6:in `new'
from /var/lib/gems/1.8/gems/rails-2.3.5/lib/commands/console.rb:6
from /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
from /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `require'
from ./script/console:3
这是rake db:migrate --trace
的结果:
(in /home/carpdiem/Dropbox/programming/ruby/rails_projects/demo_app)
** Invoke db:migrate (first_time)
** Invoke environment (first_time)
** Execute environment
** Execute db:migrate
** Invoke db:schema:dump (first_time)
** Invoke environment
** Execute db:schema:dump
有帮助吗?
编辑2:@ zed_0xff:
rake gems
:
`(在/ home / carpdiem / Dropbox / programming / ruby / rails_projects / demo_app中)
I =已安装F =冻结R =框架(在Rails启动之前加载)
config / environment.rb:
`需要File.join(File.dirname( File ),'boot')
Rails :: Initializer.run做| config | config.time_zone ='UTC'结束`
编辑#3:我解决了! 听起来好像有一些复杂的依赖关系问题存在。 遵循来自此处的建议: http : //docs.heroku.com/rails236升级到Rails 2.3.8似乎已解决了该问题。 script/console
现在可以正确启动。
尝试运行./script/console --trace
或rake db:migrate --trace
,rake命令也可能会失败,但是--trace
开关可以为您的应用程序失败提供有价值的信息。
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