Question

无论我发出rake，rails等命令，我在rails应用程序中都会遇到同样的错误。

Block not supplied (ArgumentError)

C:\Sites\merevik\merevik>rails console
C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/railties-3.2.1/lib/rails/ra
iltie/configurable.rb:24:in `class_eval': block not supplied (ArgumentError)
        from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/railties-3.2.1
/lib/rails/railtie/configurable.rb:24:in `configure'
        from C:/Sites/merevik/merevik/config/initializers/setup_mail.rb:2:in `bl
ock in <top (required)>'
        from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/railties-3.2.1
/lib/rails/railtie/configurable.rb:24:in `class_eval'
        from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/railties-3.2.1
/lib/rails/railtie/configurable.rb:24:in `configure'
        from C:/Sites/merevik/merevik/config/initializers/setup_mail.rb:1:in `<t
op (required)>'
        from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/activesupport-
3.2.1/lib/active_support/dependencies.rb:245:in `load'
        from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/activesupport-
3.2.1/lib/active_support/dependencies.rb:245:in `block in load'
        from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/activesupport-
3.2.1/lib/active_support/dependencies.rb:236:in `load_dependency'
        from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/activesupport-
3.2.1/lib/active_support/dependencies.rb:245:in `load'
        from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/railties-3.2.1
/lib/rails/engine.rb:588:in `block (2 levels) in <class:Engine>'
        from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/railties-3.2.1
/lib/rails/engine.rb:587:in `each'
        from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/railties-3.2.1
/lib/rails/engine.rb:587:in `block in <class:Engine>'
        from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/railties-3.2.1
/lib/rails/initializable.rb:30:in `instance_exec'
        from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/railties-3.2.1
/lib/rails/initializable.rb:30:in `run'
        from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/railties-3.2.1
/lib/rails/initializable.rb:55:in `block in run_initializers'
        from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/railties-3.2.1
/lib/rails/initializable.rb:54:in `each'
        from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/railties-3.2.1
/lib/rails/initializable.rb:54:in `run_initializers'
        from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/railties-3.2.1
/lib/rails/application.rb:136:in `initialize!'
        from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/railties-3.2.1
/lib/rails/railtie/configurable.rb:30:in `method_missing'
        from C:/Sites/merevik/merevik/config/environment.rb:5:in `<top (required
)>'
        from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/activesupport-
3.2.1/lib/active_support/dependencies.rb:251:in `require'
        from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/activesupport-
3.2.1/lib/active_support/dependencies.rb:251:in `block in require'
        from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/activesupport-
3.2.1/lib/active_support/dependencies.rb:236:in `load_dependency'
        from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/activesupport-
3.2.1/lib/active_support/dependencies.rb:251:in `require'
        from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/railties-3.2.1
/lib/rails/application.rb:103:in `require_environment!'
        from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/railties-3.2.1
/lib/rails/commands.rb:40:in `<top (required)>'
        from script/rails:6:in `require'
        from script/rails:6:in `<main>'

Answer 1

您似乎是在configure的第2行调用setup_mail.rb而未传递阻止。在第1行，你也在调用configure，并在第2行传递包含错误调用的块。我猜你正在做类似的事情：

configure.some_option = 'value'

你真正想要的地方：

config.some_option = 'value'

这是configure的来源：

def configure(&block)
  class_eval(&block)
end

在没有阻止的情况下调用class_eval将始终抛出ArgumentError。

没有一个命令可以使用rails app

1 个答案: