我写了这段代码
namespace :db do
task :seed, :only => {:primary => true}, :except => { :no_release => true } do
rails_env = ENV["RAILS_ENV"]
current_path = File.dirname(__FILE__)
run "cd #{current_path}; RAILS_ENV=#{rails_env} bundle exec rake db:seed"
end
end
我在部署后调用db.seed:migrate
此代码适用于我的测试环境,但不适用于开发或集成环境.它显示了这个错误:
rake aborted!
undefined method `[]' for nil:NilClass
/Users/Megha/Documents/Mckinsey project/LeanITAppServer/config/initializers/authentication.rb:6:in `<top (required)>'
/Users/Megha/.rvm/gems/ruby-1.9.3-p392@bto/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:245:in `load'
/Users/Megha/.rvm/gems/ruby-1.9.3-p392@bto/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:245:in `block in load'
/Users/Megha/.rvm/gems/ruby-1.9.3-p392@bto/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:236:in `load_dependency'
/Users/Megha/.rvm/gems/ruby-1.9.3-p392@bto/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:245:in `load'
/Users/Megha/.rvm/gems/ruby-1.9.3-p392@bto/gems/railties-3.2.13/lib/rails/engine.rb:588:in `block (2 levels) in <class:Engine>'
/Users/Megha/.rvm/gems/ruby-1.9.3-p392@bto/gems/railties-3.2.13/lib/rails/engine.rb:587:in `each'
/Users/Megha/.rvm/gems/ruby-1.9.3-p392@bto/gems/railties-3.2.13/lib/rails/engine.rb:587:in `block in <class:Engine>'
/Users/Megha/.rvm/gems/ruby-1.9.3-p392@bto/gems/railties-3.2.13/lib/rails/initializable.rb:30:in `instance_exec'
/Users/Megha/.rvm/gems/ruby-1.9.3-p392@bto/gems/railties-3.2.13/lib/rails/initializable.rb:30:in `run'
/Users/Megha/.rvm/gems/ruby-1.9.3-p392@bto/gems/railties-3.2.13/lib/rails/initializable.rb:55:in `block in run_initializers'
/Users/Megha/.rvm/gems/ruby-1.9.3-p392@bto/gems/railties-3.2.13/lib/rails/initializable.rb:54:in `each' …我有一个具有数据类型joda.money属性的类。如何将这个属性映射到mysql中。
我的课是：
@Table（name =“ products”）公共类Product（）{@Column（name =“ name”）字符串名称；@Column（name =“ money”）金钱金钱；}
我正在使用Spring Hibernate
谁能说出如何将此模型存储到mysql中？
我已经在我的项目中实现了搜索选项。它根据用户给定的多个字段搜索记录，然后根据它显示记录。现在我希望将这些过滤后的记录导出为 excel。我怎样才能做到这一点？