Question

对Sinatra来说很新，但我正在按照本教程设置一个包含一些静态页面的简单博客站点：http://danneu.com/posts/15-a-simple-blog-with-sinatra-and-active-record-some-useful-tools/

我创建了包含以下内容的gemfile：

# Gemfile
source :rubygems

gem "sinatra"
gem "sqlite3"
gem "activerecord"
gem "sinatra-activerecord"

group :development do
  gem "shotgun"
  gem "tux"
end

然后使用bundle install

安装

我的config.ru看起来像这样：

#config.ru
require "./app"
run Sinatra::Application

但是当我尝试运行tux时，我收到以下错误：

/Users/admin/.rvm/gems/ruby-2.0.0-p195/gems/ripl-rack-0.2.0/lib/ripl/rack.rb:38:in `eval': cannot load such file -- ./app (LoadError)
    from (eval):2:in `block in initialize'
    from /Users/admin/.rvm/gems/ruby-2.0.0-p195/gems/rack-1.5.2/lib/rack/builder.rb:55:in `instance_eval'
    from /Users/admin/.rvm/gems/ruby-2.0.0-p195/gems/rack-1.5.2/lib/rack/builder.rb:55:in `initialize'
    from (eval):1:in `new'
    from (eval):1:in `initialize'
    from /Users/admin/.rvm/gems/ruby-2.0.0-p195/gems/ripl-rack-0.2.0/lib/ripl/rack.rb:38:in `eval'
    from /Users/admin/.rvm/gems/ruby-2.0.0-p195/gems/ripl-rack-0.2.0/lib/ripl/rack.rb:38:in `initialize'
    from /Users/admin/.rvm/gems/ruby-2.0.0-p195/gems/ripl-rack-0.2.0/lib/ripl/rack.rb:18:in `new'
    from /Users/admin/.rvm/gems/ruby-2.0.0-p195/gems/ripl-rack-0.2.0/lib/ripl/rack.rb:18:in `rack'
    from /Users/admin/.rvm/gems/ruby-2.0.0-p195/gems/ripl-rack-0.2.0/lib/ripl/rack.rb:9:in `before_loop'
    from /Users/admin/.rvm/gems/ruby-2.0.0-p195/gems/ripl-multi_line-0.3.1/lib/ripl/multi_line.rb:18:in `before_loop'
    from /Users/admin/.rvm/gems/ruby-2.0.0-p195/gems/ripl-0.7.0/lib/ripl/readline.rb:6:in `before_loop'
    from /Users/admin/.rvm/gems/ruby-2.0.0-p195/gems/ripl-0.7.0/lib/ripl/completion.rb:5:in `before_loop'
    from /Users/admin/.rvm/gems/ruby-2.0.0-p195/gems/ripl-0.7.0/lib/ripl/shell.rb:34:in `loop'
    from /Users/admin/.rvm/gems/ruby-2.0.0-p195/gems/ripl-0.7.0/lib/ripl/runner.rb:49:in `start'
    from /Users/admin/.rvm/gems/ruby-2.0.0-p195/gems/ripl-0.7.0/lib/ripl/runner.rb:31:in `run'
    from /Users/admin/.rvm/gems/ruby-2.0.0-p195/gems/tux-0.3.0/bin/tux:7:in `<top (required)>'
    from /Users/admin/.rvm/gems/ruby-2.0.0-p195/bin/tux:23:in `load'
    from /Users/admin/.rvm/gems/ruby-2.0.0-p195/bin/tux:23:in `<main>'
    from /Users/admin/.rvm/gems/ruby-2.0.0-p195/bin/ruby_noexec_wrapper:14:in `eval'
    from /Users/admin/.rvm/gems/ruby-2.0.0-p195/bin/ruby_noexec_wrapper:14:in `<main>'

知道可能导致这种情况的原因是什么？我有ruby 2.0.0p195 (2013-05-14 revision 40734) [x86_64-darwin12.4.0]

Answer 1

您的错误是：

cannot load such file -- ./app (LoadError)

该错误表明tux无法在当前目录中找到名为app.rb的文件。 tux正在寻找那个文件，因为你的config.ru说：

config.ru
require "./app"
run Sinatra::Application

看看它如何提到名为“./app”的文件？好吧，“教程”没有显示该文件的屏幕截图，直到它显示了tux的屏幕截图。所以创建app.rb文件，然后运行tux。

还要更改您的Gemfile：

source :rubygems

到此：

source 'https://rubygems.org'

（当你.../blog$ bundle install时，Bundler应该给你一个警告。）

您将进一步遇到的另一个错误：

在tux中，它说要做到这一点：

>> p = new_record?

应该是：

>> p.new_record?

Answer 2

我对config.ru不是很熟悉，但一个可能的问题是您使用require作为相对文件路径。将第一行更改为 -

require_relative "./app"

可能有帮助。

与Sinatra的Tux无法加载

2 个答案: