ruby-on-rails - 即使在捆绑安装后 Rails Server 也会退出

Question

我正在尝试运行《Agile Web Development with Rails 第四版》一书中的 depot_arails3.1.0 示例，该书可以下载 here .

我收到各种错误，即使在调用 rails server 之前运行 bundle install 后，我也无法破译。知道如何解决这个问题吗？

谢谢。

Your bundle is complete! Use `bundle show [gemname]` to see where a bundled gem is installed.    
nuno@Houdini:~/workspace/depot_a$ rails server
=> Booting WEBrick
=> Rails 3.1.0 application starting in development on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server
Exiting
/var/lib/gems/1.8/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:234:in `load': /home/nuno/workspace/depot_a/config/initializers/session_store.rb:11: syntax error, unexpected ':', expecting $end (SyntaxError)
...sion_store :cookie_store, key: '_depot_session'
                              ^
    from /var/lib/gems/1.8/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:234:in `load'
    from /var/lib/gems/1.8/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:223:in `load_dependency'
    from /var/lib/gems/1.8/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:640:in `new_constants_in'
    from /var/lib/gems/1.8/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:223:in `load_dependency'
    from /var/lib/gems/1.8/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:234:in `load'
    from /var/lib/gems/1.8/gems/railties-3.1.0/lib/rails/engine.rb:555
    from /var/lib/gems/1.8/gems/railties-3.1.0/lib/rails/engine.rb:554:in `each'
    from /var/lib/gems/1.8/gems/railties-3.1.0/lib/rails/engine.rb:554
    from /var/lib/gems/1.8/gems/railties-3.1.0/lib/rails/initializable.rb:25:in `instance_exec'
    from /var/lib/gems/1.8/gems/railties-3.1.0/lib/rails/initializable.rb:25:in `run'
    from /var/lib/gems/1.8/gems/railties-3.1.0/lib/rails/initializable.rb:50:in `run_initializers'
    from /var/lib/gems/1.8/gems/railties-3.1.0/lib/rails/initializable.rb:49:in `each'
    from /var/lib/gems/1.8/gems/railties-3.1.0/lib/rails/initializable.rb:49:in `run_initializers'
    from /var/lib/gems/1.8/gems/railties-3.1.0/lib/rails/application.rb:92:in `initialize!'
    from /var/lib/gems/1.8/gems/railties-3.1.0/lib/rails/railtie/configurable.rb:30:in `send'
    from /var/lib/gems/1.8/gems/railties-3.1.0/lib/rails/railtie/configurable.rb:30:in `method_missing'
    from /home/nuno/workspace/depot_a/config/environment.rb:13
    from /home/nuno/workspace/depot_a/config.ru:4:in `require'
    from /home/nuno/workspace/depot_a/config.ru:4
    from /var/lib/gems/1.8/gems/rack-1.3.5/lib/rack/builder.rb:51:in `instance_eval'
    from /var/lib/gems/1.8/gems/rack-1.3.5/lib/rack/builder.rb:51:in `initialize'
    from /home/nuno/workspace/depot_a/config.ru:1:in `new'
    from /home/nuno/workspace/depot_a/config.ru:1

Answer 1

您使用的是 ruby​​ 1.8.x 吗？看来您使用的是 1.9.x 风格的哈希表示法，1.8.x 无法破译

而不是

hash = { a: 1, b: 2}

你应该使用:

hash = { :a => 1, :b => 2 }

问题出在config/initializers/session_store.rb:11，如果还是卡住，请贴出这一行的代码。