Rails 3，FactoryGirl：错误的参数数量（1为0）（ArgumentError）

Question

我正在开发Ruby on Rails教程，但在使用FactoryGirl进行测试时遇到问题。 这里是我的错误信息：

/Users/user/Documents/code/RoR/test/sample_app/spec/factories.rb:13:in `block (2 levels) in <top (required)>': wrong number of arguments (1 for 0) (ArgumentError) 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/factory_girl-4.2.0/lib/factory_girl/syntax/default.rb:18:in `instance_eval' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/factory_girl-4.2.0/lib/factory_girl/syntax/default.rb:18:in `factory' 
from /Users/user/Documents/code/RoR/test/sample_app/spec/factories.rb:12:in `block in <top (required)>' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/factory_girl-4.2.0/lib/factory_girl/syntax/default.rb:49:in `instance_eval' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/factory_girl-4.2.0/lib/factory_girl/syntax/default.rb:49:in `run' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/factory_girl-4.2.0/lib/factory_girl/syntax/default.rb:7:in `define' 
from /Users/user/Documents/code/RoR/test/sample_app/spec/factories.rb:11:in `<top (required)>' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:245:in `load' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:245:in `block in load' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:236:in `load_dependency' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:245:in `load' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/factory_girl-4.2.0/lib/factory_girl/find_definitions.rb:16:in `block in find_definitions' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/factory_girl-4.2.0/lib/factory_girl/find_definitions.rb:15:in `each' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/factory_girl-4.2.0/lib/factory_girl/find_definitions.rb:15:in `find_definitions' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/factory_girl_rails-4.2.1/lib/factory_girl_rails/railtie.rb:33:in `block in <class:Railtie>' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/activesupport-3.2.12/lib/active_support/lazy_load_hooks.rb:34:in `call' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/activesupport-3.2.12/lib/active_support/lazy_load_hooks.rb:34:in `execute_hook' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/activesupport-3.2.12/lib/active_support/lazy_load_hooks.rb:43:in `block in run_load_hooks' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/activesupport-3.2.12/lib/active_support/lazy_load_hooks.rb:42:in `each' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/activesupport-3.2.12/lib/active_support/lazy_load_hooks.rb:42:in `run_load_hooks' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/railties-3.2.12/lib/rails/application/finisher.rb:59:in `block in <module:Finisher>' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/railties-3.2.12/lib/rails/initializable.rb:30:in `instance_exec' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/railties-3.2.12/lib/rails/initializable.rb:30:in `run' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/railties-3.2.12/lib/rails/initializable.rb:55:in `block in run_initializers' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/railties-3.2.12/lib/rails/initializable.rb:54:in `each' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/railties-3.2.12/lib/rails/initializable.rb:54:in `run_initializers' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/railties-3.2.12/lib/rails/application.rb:136:in `initialize!' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/railties-3.2.12/lib/rails/railtie/configurable.rb:30:in `method_missing' 
from /Users/user/Documents/code/RoR/test/sample_app/config/environment.rb:5:in `<top (required)>' 
from /Users/user/Documents/code/RoR/test/sample_app/spec/spec_helper.rb:51:in `require' 
from /Users/user/Documents/code/RoR/test/sample_app/spec/spec_helper.rb:51:in `<top (required)>' 
from /Users/user/Documents/code/RoR/test/sample_app/spec/controllers/pages_controller_spec.rb:1:in `require' 
from /Users/user/Documents/code/RoR/test/sample_app/spec/controllers/pages_controller_spec.rb:1:in `<top (required)>' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/rspec-core-2.13.0/lib/rspec/core/configuration.rb:819:in `load' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/rspec-core-2.13.0/lib/rspec/core/configuration.rb:819:in `block in load_spec_files' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/rspec-core-2.13.0/lib/rspec/core/configuration.rb:819:in `each' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/rspec-core-2.13.0/lib/rspec/core/configuration.rb:819:in `load_spec_files' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/rspec-core-2.13.0/lib/rspec/core/command_line.rb:22:in `run' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/rspec-core-2.13.0/lib/rspec/core/runner.rb:80:in `run' 
from /Users/user/.rvm/gems/ruby-1.9.3-p385/gems/rspec-core-2.13.0/lib/rspec/core/runner.rb:17:in `block in autorun' 

这里是我factories.rb：

FactoryGirl.define do 
    factory :user do 
    user.name "abc" 
    user.email "[email protected]" 
    user.password "foobar" 
    user.password_confirmation "foobar" 
    end 
end 

这里是我在user_controller_spec.rb使用代码：

before(:each) do 
    @user = FactoryGirl.create(:user) 
end 

我已经在之前提出的问题中尝试过这些方法，但它们不起作用。有人可以帮我吗？谢谢！

Answer 1

你的工厂文件应该仅仅是：

FactoryGirl.define do 
    factory :user do 
    name "abc" 
    email "[email protected]" 
    password "foobar" 
    password_confirmation "foobar" 
    end 
end 

这会工作。

您在初始版本中使用了局部变量'user'。问题是没有本地变量用户传递给块，或者在块中定义。正如上面的评论者之一所指出的那样 - 如果你想调用user.name，那么你必须传递| user |到块。即

FactoryGirl.define do 
    factory :user do |user| 
    etc. 

但是这在FactoryGirl中不是必需的。我可以在上面输入时进行操作。

我建议你阅读https://github.com/thoughtbot/factory_girl/wiki/Usage - 通过教程:-)