我是ruby,rails和mysql的新手 .
我的操作系统是Ubuntu 13.04,ruby的版本是1.9.3p194(2012-04-20修订版35410)[x86_64-linux],rails的版本是3.2.13 .
当我执行此命令时: rake db:migrate --trace
,我遇到了这样的错误:
rake aborted!
uninitialized constant ActiveSupport::CoreExtensions::Date::Calculations
/usr/lib/ruby/vendor_ruby/active_support/core_ext/date.rb:8:in `<class:Date>'
/usr/lib/ruby/vendor_ruby/active_support/core_ext/date.rb:6:in `<top (required)>'
/var/lib/gems/1.9.1/gems/date_time_precision-0.5.3/lib/date_time_precision/lib.rb:4:in `block in <top (required)>'
/var/lib/gems/1.9.1/gems/date_time_precision-0.5.3/lib/date_time_precision/lib.rb:2:in `each'
/var/lib/gems/1.9.1/gems/date_time_precision-0.5.3/lib/date_time_precision/lib.rb:2:in `<top (required)>'
/var/lib/gems/1.9.1/gems/date_time_precision-0.5.3/lib/date_time_precision/patch.rb:1:in `<top (required)>'
/var/lib/gems/1.9.1/gems/date_time_precision-0.5.3/lib/date_time_precision.rb:1:in `<top (required)>'
/var/lib/gems/1.9.1/gems/bundler-1.5.2/lib/bundler/runtime.rb:76:in `require'
/var/lib/gems/1.9.1/gems/bundler-1.5.2/lib/bundler/runtime.rb:76:in `block (2 levels) in require'
/var/lib/gems/1.9.1/gems/bundler-1.5.2/lib/bundler/runtime.rb:72:in `each'
/var/lib/gems/1.9.1/gems/bundler-1.5.2/lib/bundler/runtime.rb:72:in `block in require'
/var/lib/gems/1.9.1/gems/bundler-1.5.2/lib/bundler/runtime.rb:61:in `each'
/var/lib/gems/1.9.1/gems/bundler-1.5.2/lib/bundler/runtime.rb:61:in `require'
/var/lib/gems/1.9.1/gems/bundler-1.5.2/lib/bundler.rb:131:in `require'
/home/xye/Documents/Work/config/application.rb:14:in `<top (required)>'
/usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
/usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
/home/xye/Documents/Work/Rakefile:5:in `<top (required)>'
/var/lib/gems/1.9.1/gems/rake-10.0.3/lib/rake/rake_module.rb:25:in `load'
/var/lib/gems/1.9.1/gems/rake-10.0.3/lib/rake/rake_module.rb:25:in `load_rakefile'
/var/lib/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:583:in `raw_load_rakefile'
/var/lib/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:89:in `block in load_rakefile'
/var/lib/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:160:in `standard_exception_handling'
/var/lib/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:88:in `load_rakefile'
/var/lib/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:72:in `block in run'
/var/lib/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:160:in `standard_exception_handling'
/var/lib/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:70:in `run'
/var/lib/gems/1.9.1/gems/rake-10.0.3/bin/rake:33:in `<top (required)>'
/usr/local/bin/rake:23:in `load'
/usr/local/bin/rake:23:in `<main>'
这很奇怪,我不知道如何处理它 . 有任何想法吗?
1 回答
名为
date_time_precision
的宝石与主动支持相冲突 .来自
date_time_precision
文档:如果您不自信地修复它,您应该删除此gem .