ruby - Ruby script can't use gem

Question

I have a tiny, plain (i.e. non-Rails) Ruby project that I'm trying to get to work with the addressable gem. Here's what happens:

$ ruby -r rubygems sign.rb
sign.rb:5:in `require': cannot load such file -- addressable (LoadError)
    from sign.rb:5:in `<main>'

This is the Gemfile:

source "http://rubygems.org"

gem "addressable", "~> 2.3.2"

This is sign.rb:

#!/usr/bin/env ruby

require "rubygems"
require "bundler/setup"
require "addressable"

That's all there is to it. Why doesn't it want to use the gem?

score 2 · Accepted Answer

没有addressable您可以要求的文件，只有addressable目录。您需要在所需的目录下要求特定文件，例如：

require 'addressable/uri'
uri = Addressable::URI.parse("http://example.com/path/to/resource/")
# etc ...

或者

require "addressable/template"
template = Addressable::Template.new("http://example.com/{?query*}/")
# etc...

score 0 · Accepted Answer

您之前是否使用安装了 gem $ bundle install？

这将获取您的 Gemfile 中指定的 gem，并使其可用于工作目录。

2 回答 2