我已经看过some different answers,但这些都没有帮助我......
这就是诀窍:我必须解决这个没有触摸Gemfile。我目前正在创建我的工作环境,以便它与生产服务器匹配,因此,我无法修改导轨'代码。
我的操作系统:OSX 10.11
Ruby:ruby 2.0.0p643
Rails:4.0.0
gem是Gemfile gem 'mysql2'
。执行bundle install
时没有错误,但当我尝试rake db:migrate --trace
时,这是输出:
rake aborted! There was an error while trying to load the gem 'mysql2'. /Users/redar/.rvm/gems/ruby-2.0.0-p643/gems/bundler-1.11.2/lib/bundler/runtime.rb:80:in `rescue in block (2 levels) in require' /Users/redar/.rvm/gems/ruby-2.0.0-p643/gems/bundler-1.11.2/lib/bundler/runtime.rb:76:in `block (2 levels) in require' /Users/redar/.rvm/gems/ruby-2.0.0-p643/gems/bundler-1.11.2/lib/bundler/runtime.rb:72:in `each' /Users/redar/.rvm/gems/ruby-2.0.0-p643/gems/bundler-1.11.2/lib/bundler/runtime.rb:72:in `block in require' /Users/redar/.rvm/gems/ruby-2.0.0-p643/gems/bundler-1.11.2/lib/bundler/runtime.rb:61:in `each' /Users/redar/.rvm/gems/ruby-2.0.0-p643/gems/bundler-1.11.2/lib/bundler/runtime.rb:61:in `require' /Users/redar/.rvm/gems/ruby-2.0.0-p643/gems/bundler-1.11.2/lib/bundler.rb:99:in `require' /Users/redar/redar/config/application.rb:7:in `<top (required)>' /Users/redar/redar/Rakefile:4:in `require' /Users/redar/redar/Rakefile:4:in `<top (required)>' /Users/redar/.rvm/gems/ruby-2.0.0-p643/gems/rake-10.1.0/lib/rake/rake_module.rb:25:in `load' /Users/redar/.rvm/gems/ruby-2.0.0-p643/gems/rake-10.1.0/lib/rake/rake_module.rb:25:in `load_rakefile' /Users/redar/.rvm/gems/ruby-2.0.0-p643/gems/rake-10.1.0/lib/rake/application.rb:637:in `raw_load_rakefile' /Users/redar/.rvm/gems/ruby-2.0.0-p643/gems/rake-10.1.0/lib/rake/application.rb:94:in `block in load_rakefile' /Users/redar/.rvm/gems/ruby-2.0.0-p643/gems/rake-10.1.0/lib/rake/application.rb:165:in `standard_exception_handling' /Users/redar/.rvm/gems/ruby-2.0.0-p643/gems/rake-10.1.0/lib/rake/application.rb:93:in `load_rakefile' /Users/redar/.rvm/gems/ruby-2.0.0-p643/gems/rake-10.1.0/lib/rake/application.rb:77:in `block in run' /Users/redar/.rvm/gems/ruby-2.0.0-p643/gems/rake-10.1.0/lib/rake/application.rb:165:in `standard_exception_handling' /Users/redar/.rvm/gems/ruby-2.0.0-p643/gems/rake-10.1.0/lib/rake/application.rb:75:in `run' /Users/redar/.rvm/gems/ruby-2.0.0-p643/gems/rake-10.1.0/bin/rake:33:in `<top (required)>' /Users/redar/.rvm/gems/ruby-2.0.0-p643/bin/rake:23:in `load' /Users/redar/.rvm/gems/ruby-2.0.0-p643/bin/rake:23:in `<main>' /Users/redar/.rvm/gems/ruby-2.0.0-p643/bin/ruby_executable_hooks:15:in `eval' /Users/redar/.rvm/gems/ruby-2.0.0-p643/bin/ruby_executable_hooks:15:in `<main>'
我不知道如何解释这个。 Rakefile
是否有问题?
编辑:这是我的Rakefile的内容,位于myapp /文件夹
# Add your own tasks in files placed in lib/tasks ending in .rake,
# for example lib/tasks/capistrano.rake, and they will automatically be available to Rake.
require File.expand_path('../config/application', __FILE__)
MyApp::Application.load_tasks
答案 0 :(得分:0)
尝试
bundle exec rake db:migrate
这将确保您正在执行“rake db:migrate”,其中Gemfile中列出的gem已加载且可用。如果在没有“bundle exec”的情况下运行它,则可能只使用系统gem可用。