Ruby on rails 生成Ruby迁移时遇到问题
我想为运行Rails 2.3.14和Ruby 1.8.7的站点生成一个新的迁移。我写了命令Ruby on rails 生成Ruby迁移时遇到问题,ruby-on-rails,ruby,rails-migrations,Ruby On Rails,Ruby,Rails Migrations,我想为运行Rails 2.3.14和Ruby 1.8.7的站点生成一个新的迁移。我写了命令 ruby script/generate migration AssetTable 希望脚本在db/migrate目录中生成文件2013052161112_asset_table.rb。但是我没有看到这个文件。运行上述命令后得到的输出是： /var/lib/gems/1.8/gems/rails-2.3.14/lib/rails/gem_dependency.rb:81:in `add_load_pat
ruby script/generate migration AssetTable
/var/lib/gems/1.8/gems/rails-2.3.14/lib/rails/gem_dependency.rb:81:in `add_load_paths': undefined method `requirement' for #<Rails::GemDependency:0x7ffd183eba58> (NoMethodError)
from /var/lib/gems/1.8/gems/rails-2.3.14/lib/initializer.rb:301:in `add_gem_load_paths'
from /var/lib/gems/1.8/gems/rails-2.3.14/lib/initializer.rb:301:in `each'
from /var/lib/gems/1.8/gems/rails-2.3.14/lib/initializer.rb:301:in `add_gem_load_paths'
from /var/lib/gems/1.8/gems/rails-2.3.14/lib/initializer.rb:132:in `process'
from /var/lib/gems/1.8/gems/rails-2.3.14/lib/initializer.rb:113:in `send'
from /var/lib/gems/1.8/gems/rails-2.3.14/lib/initializer.rb:113:in `run'
from /var/www/pbcore/releases/20120416101734/config/environment.rb:17
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 /var/lib/gems/1.8/gems/rails-2.3.14/lib/commands/generate.rb:1
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
/var/lib/gems/1.8/gems/rails-2.3.14/lib/rails/gem_dependency.rb:81:in'add_load_path'：未定义的方法'requirement'（NoMethodError）
from/var/lib/gems/1.8/gems/rails-2.3.14/lib/initializer.rb:301:“添加gem\u加载路径”
from/var/lib/gems/1.8/gems/rails-2.3.14/lib/initializer.rb:301:in'each'
from/var/lib/gems/1.8/gems/rails-2.3.14/lib/initializer.rb:301:“添加gem\u加载路径”
from/var/lib/gems/1.8/gems/rails-2.3.14/lib/initializer.rb:132:在“进程”中
from/var/lib/gems/1.8/gems/rails-2.3.14/lib/initializer.rb:113:in'send'
from/var/lib/gems/1.8/gems/rails-2.3.14/lib/initializer.rb:113:in'run'
摘自/var/www/pbcore/releases/20120416101734/config/environment.rb:17
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'
来自/var/lib/gems/1.8/gems/rails-2.3.14/lib/commands/generate.rb:1
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
有人知道我做错了什么吗？根据您的rubygems版本，您可以尝试运行：
$ gem install rubygems-update -v='1.4.2'
$ gem uninstall rubygems-update -v='1.5.0'
$ update_rubygems
所以问题是我有Ruby1.8.7，我需要降级到一个更早的版本，使它能与Rails 2.3.14一起工作？嗯，我只是读了一点帖子，我认为你必须降级rubygems，而不是Rubyth。答案是：“这是因为你安装了rubygems，这对你的Rails版本来说太新了。要么降级，要么降级（并重新运行update\u rubygems）或将Rails升级到2.3.11。“好吧，我试着降级到rubygems 1.3.5，但当我运行
$update\u rubygems-bash:update\u rubygems:command not found