Spree的最新版本在nil：NilClass的远程未定义方法“ set_preference”上执行此操作

问题描述

| 一切在我的本地计算机上都可以正常运行。我在服务器上正确安装了所有内容，当我运行

rake db:bootstrap

或

rake db:migrate

时，我得到了：

rake aborted!
undefined method `set_preference\' for nil:NilClass
/home/chrisisraw/webapps/rails/gems/gems/activesupport-3.0.5/lib/active_support/whiny_nil.rb:48:in `method_missing\'
/home/chrisisraw/webapps/rails/gems/bundler/gems/spree-17e74dd1e908/core/lib/spree/preference_access.rb:18:in `set\'
/home/chrisisraw/webapps/rails/gems/bundler/gems/spree-17e74dd1e908/core/lib/spree/preference_access.rb:17:in `each\'
/home/chrisisraw/webapps/rails/gems/bundler/gems/spree-17e74dd1e908/core/lib/spree/preference_access.rb:17:in `set\'
/home/chrisisraw/webapps/rails/Live-Jolly-Foods/config/initializers/jolly.rb:1
/home/chrisisraw/webapps/rails/gems/gems/activesupport-3.0.5/lib/active_support/dependencies.rb:235:in `load\'
/home/chrisisraw/webapps/rails/gems/gems/activesupport-3.0.5/lib/active_support/dependencies.rb:235:in `load\'
/home/chrisisraw/webapps/rails/gems/gems/activesupport-3.0.5/lib/active_support/dependencies.rb:225:in `load_dependency\'
/home/chrisisraw/webapps/rails/gems/gems/activesupport-3.0.5/lib/active_support/dependencies.rb:596:in `new_constants_in\'
/home/chrisisraw/webapps/rails/gems/gems/activesupport-3.0.5/lib/active_support/dependencies.rb:225:in `load_dependency\'
/home/chrisisraw/webapps/rails/gems/gems/activesupport-3.0.5/lib/active_support/dependencies.rb:235:in `load\'
/home/chrisisraw/webapps/rails/gems/gems/railties-3.0.5/lib/rails/engine.rb:201
/home/chrisisraw/webapps/rails/gems/gems/railties-3.0.5/lib/rails/engine.rb:200:in `each\'
/home/chrisisraw/webapps/rails/gems/gems/railties-3.0.5/lib/rails/engine.rb:200
/home/chrisisraw/webapps/rails/gems/gems/railties-3.0.5/lib/rails/initializable.rb:25:in `instance_exec\'
/home/chrisisraw/webapps/rails/gems/gems/railties-3.0.5/lib/rails/initializable.rb:25:in `run\'
/home/chrisisraw/webapps/rails/gems/gems/railties-3.0.5/lib/rails/initializable.rb:50:in `run_initializers\'
/home/chrisisraw/webapps/rails/gems/gems/railties-3.0.5/lib/rails/initializable.rb:49:in `each\'
/home/chrisisraw/webapps/rails/gems/gems/railties-3.0.5/lib/rails/initializable.rb:49:in `run_initializers\'
/home/chrisisraw/webapps/rails/gems/gems/railties-3.0.5/lib/rails/application.rb:134:in `initialize!\'
/home/chrisisraw/webapps/rails/gems/gems/railties-3.0.5/lib/rails/application.rb:77:in `send\'
/home/chrisisraw/webapps/rails/gems/gems/railties-3.0.5/lib/rails/application.rb:77:in `method_missing\'
/home/chrisisraw/webapps/rails/Live-Jolly-Foods/config/environment.rb:5
/home/chrisisraw/webapps/rails/gems/gems/activesupport-3.0.5/lib/active_support/dependencies.rb:239:in `require\'
/home/chrisisraw/webapps/rails/gems/gems/activesupport-3.0.5/lib/active_support/dependencies.rb:239:in `require\'
/home/chrisisraw/webapps/rails/gems/gems/activesupport-3.0.5/lib/active_support/dependencies.rb:225:in `load_dependency\'
/home/chrisisraw/webapps/rails/gems/gems/activesupport-3.0.5/lib/active_support/dependencies.rb:596:in `new_constants_in\'
/home/chrisisraw/webapps/rails/gems/gems/activesupport-3.0.5/lib/active_support/dependencies.rb:225:in `load_dependency\'
/home/chrisisraw/webapps/rails/gems/gems/activesupport-3.0.5/lib/active_support/dependencies.rb:239:in `require\'
/home/chrisisraw/webapps/rails/gems/gems/railties-3.0.5/lib/rails/application.rb:103:in `require_environment!\'
/home/chrisisraw/webapps/rails/gems/gems/railties-3.0.5/lib/rails/application.rb:216
/home/chrisisraw/webapps/rails/gems/gems/rake-0.8.7/lib/rake.rb:636:in `call\'
/home/chrisisraw/webapps/rails/gems/gems/rake-0.8.7/lib/rake.rb:636:in `execute\'
/home/chrisisraw/webapps/rails/gems/gems/rake-0.8.7/lib/rake.rb:631:in `each\'
/home/chrisisraw/webapps/rails/gems/gems/rake-0.8.7/lib/rake.rb:631:in `execute\'
/home/chrisisraw/webapps/rails/gems/gems/rake-0.8.7/lib/rake.rb:597:in `invoke_with_call_chain\'
/usr/local/ruby1.8.7ee/lib/ruby/1.8/monitor.rb:242:in `synchronize\'
/home/chrisisraw/webapps/rails/gems/gems/rake-0.8.7/lib/rake.rb:590:in `invoke_with_call_chain\'
/home/chrisisraw/webapps/rails/gems/gems/rake-0.8.7/lib/rake.rb:607:in `invoke_prerequisites\'
/home/chrisisraw/webapps/rails/gems/gems/rake-0.8.7/lib/rake.rb:604:in `each\'
/home/chrisisraw/webapps/rails/gems/gems/rake-0.8.7/lib/rake.rb:604:in `invoke_prerequisites\'
/home/chrisisraw/webapps/rails/gems/gems/rake-0.8.7/lib/rake.rb:596:in `invoke_with_call_chain\'
/usr/local/ruby1.8.7ee/lib/ruby/1.8/monitor.rb:242:in `synchronize\'
/home/chrisisraw/webapps/rails/gems/gems/rake-0.8.7/lib/rake.rb:590:in `invoke_with_call_chain\'
/home/chrisisraw/webapps/rails/gems/gems/rake-0.8.7/lib/rake.rb:583:in `invoke\'
/home/chrisisraw/webapps/rails/gems/bundler/gems/spree-17e74dd1e908/core/lib/tasks/core.rake:71
/home/chrisisraw/webapps/rails/gems/gems/rake-0.8.7/lib/rake.rb:636:in `call\'
/home/chrisisraw/webapps/rails/gems/gems/rake-0.8.7/lib/rake.rb:636:in `execute\'
/home/chrisisraw/webapps/rails/gems/gems/rake-0.8.7/lib/rake.rb:631:in `each\'
/home/chrisisraw/webapps/rails/gems/gems/rake-0.8.7/lib/rake.rb:631:in `execute\'
/home/chrisisraw/webapps/rails/gems/gems/rake-0.8.7/lib/rake.rb:597:in `invoke_with_call_chain\'
/usr/local/ruby1.8.7ee/lib/ruby/1.8/monitor.rb:242:in `synchronize\'
/home/chrisisraw/webapps/rails/gems/gems/rake-0.8.7/lib/rake.rb:590:in `invoke_with_call_chain\'
/home/chrisisraw/webapps/rails/gems/gems/rake-0.8.7/lib/rake.rb:583:in `invoke\'
/home/chrisisraw/webapps/rails/gems/gems/rake-0.8.7/lib/rake.rb:2051:in `invoke_task\'
/home/chrisisraw/webapps/rails/gems/gems/rake-0.8.7/lib/rake.rb:2029:in `top_level\'
/home/chrisisraw/webapps/rails/gems/gems/rake-0.8.7/lib/rake.rb:2029:in `each\'
/home/chrisisraw/webapps/rails/gems/gems/rake-0.8.7/lib/rake.rb:2029:in `top_level\'
/home/chrisisraw/webapps/rails/gems/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling\'
/home/chrisisraw/webapps/rails/gems/gems/rake-0.8.7/lib/rake.rb:2023:in `top_level\'
/home/chrisisraw/webapps/rails/gems/gems/rake-0.8.7/lib/rake.rb:2001:in `run\'
/home/chrisisraw/webapps/rails/gems/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling\'
/home/chrisisraw/webapps/rails/gems/gems/rake-0.8.7/lib/rake.rb:1998:in `run\'
/home/chrisisraw/webapps/rails/gems/gems/rake-0.8.7/bin/rake:31
/home/chrisisraw/webapps/rails/bin/rake:19:in `load\'
/home/chrisisraw/webapps/rails/bin/rake:19

有人知道吗？     

解决方法

您不必删除初始化程序文件initializers / whatever.rb，只需测试狂欢实例是否存在：

if Spree::Config.instance
    Spree::Config.set(:stylesheets => \'screen\')
end

    ,好吧，看起来像在我的扩展程序中我有这个：

Spree::Config.set(:stylesheets => \'screen\')

但是既然设置了两次？不能确定..但是如果我删除了它，由于\'screen \'已经在默认首选项中进行了设置，因此一切运行正常。 然后我必须确保我以以下结尾进行迁移：

RAILS_ENV=\'production\'

而且我们是黄金！     ,在遵循http://osdir.com/ml/spree-user/2009-11/msg00248.html并设置了首选项以禁用文件“ 6”中的SSL之后，我遇到了相同的错误。删除它使我可以运行迁移。 这是在我的开发机器上     ,我对rvm有同样的问题。与可以正常工作的干净gemset进行比较时，问题在于有问题的gem既在bundle中，又在gems目录中。因此，可能的解决方法是创建一个新的gemset并运行bundle install。     ,按着这些次序： 一：注释掉\“ config / initializers / spree_config.rb \”中的所有内容 二：运行：

bundle exec rake db:migrate

三：取消注释config / initializers / spree_config.rb 四：运行：

bundle exec rake db:bootstrap