Question

在使用rake进行数据库迁移后运行'rackup'命令时出现此错误，我不明白这意味着什么。

C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/activerecord-4.2.3/lib/active_record/railties/databases.rake:3:in `<top (required)>': undefined method `namespace' for main:Object (NoMethodError)
    from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/dependencies.rb:268:in `load'
    from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/dependencies.rb:268:in `block in load'
    from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/dependencies.rb:240:in `load_dependency'
    from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/dependencies.rb:268:in `load'
    from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/sinatra-activerecord-2.0.6/lib/sinatra/activerecord/rake.rb:1:in `<top (required)>'
    from C:/RailsInstaller/Ruby2.1.0/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:69:in `require'
    from C:/RailsInstaller/Ruby2.1.0/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:69:in `require'
    from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/dependencies.rb:274:in `block in require'
    from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/dependencies.rb:240:in `load_dependency'
    from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/dependencies.rb:274:in `require'
    from C:/wamp/www/sinatra-template-master/config.ru:2:in `block in <main>'
    from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/rack-1.6.4/lib/rack/builder.rb:55:in `instance_eval'
    from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/rack-1.6.4/lib/rack/builder.rb:55:in `initialize'
    from C:/wamp/www/sinatra-template-master/config.ru:in `new'
    from C:/wamp/www/sinatra-template-master/config.ru:in `<main>'
    from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/rack-1.6.4/lib/rack/builder.rb:49:in `eval'
    from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/rack-1.6.4/lib/rack/builder.rb:49:in `new_from_string'
    from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/rack-1.6.4/lib/rack/builder.rb:40:in `parse_file'
    from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/rack-1.6.4/lib/rack/server.rb:299:in `build_app_and_options_from_config'
    from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/rack-1.6.4/lib/rack/server.rb:208:in `app'
    from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/rack-1.6.4/lib/rack/server.rb:336:in `wrapped_app'
    from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/rack-1.6.4/lib/rack/server.rb:272:in `start'
    from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/rack-1.6.4/lib/rack/server.rb:147:in `start'
    from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/rack-1.6.4/bin/rackup:4:in `<top (required)>'
    from C:/RailsInstaller/Ruby2.1.0/bin/rackup:23:in `load'
    from C:/RailsInstaller/Ruby2.1.0/bin/rackup:23:in `<main>'

请帮助，谢谢！

我在我的config.ru文件中有这个

require './app'
require 'sinatra/activerecord/rake'

run Sinatra::Application

Answer 1

我试着做同样的config.ru。当我删除

要求＆＃39; sinatra / activerecord / rake＆＃39;

一切都开始奏效了。

方法＆＃34;命名空间＆＃34;在rake / dsl_definition.rb中定义。所以，你的应用程序扩展Sinatra :: Base并没有看到它。

active_record有问题

1 个答案: