创建红宝石时产生LoadError [英] LoadError when creating ruby gem

问题描述

  riverbattle 
├──lib 
 
我试图创建我的第一个gem，这里是它的结构： 
│├──riverbattle 
││├──base.rb 
││├──colorful.rb 
││├──computer.rb 
│ │├──constants.rb 
││├──exit_error.rb 
││├──field.rb 
││├──game.rb 
││├ ──human.rb 
││├──invalid_move_error.rb 
││├──move.rb 
││├──player.rb 
││├── version.rb 
││└──victory_error.rb 
│└──riverbattle.rb 
└──riverbattle.gemspec 
  

当我在 rivarbattle / lib / riverbattle 目录中运行命令 ruby base.rb ，一切都开始工作。

文件 base.rb 在这里：

  require'./游戏'
 game = Game.new.start 
  

但是当我尝试从使用命令 ruby​​ riverbattle.rb 的 lib 目录，它会失败并显示以下错误：

/home/denis/.rvm/rubies/ruby-2.2.1/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54 ： require'：无法加载这个文件 - riverbattle / base
（LoadError）from
/home/denis/.rvm/rubies/ruby-2.2.1/lib/ ruby / site_ruby / 2.2.0 / ruby​​gems / core_ext / kernel_require.rb：54： require'from riverbattle.rb：1：in''

$ b

文件 lib / riverbattle.rb 看起来像这样：

  require'riverbattle / base'
  

尽管负载失败我试图用以下.gemspec文件构建gem：

 ＃ -  *  - 编码：utf-8  -  *  -  
 lib = File.expand_path（'../ lib'，__FILE__）
 $ LOAD_PATH.unshift（lib）除非$ LOAD_PATH.include？（lib）
需要riverbattle /版本
 
 Gem :: Specification.new do | s | 
 s.name ='riverbattle'
 s.date ='2015-07-04'
 s.summary ='享受游戏！'
 s.description ='A小型简单游戏称为Riverbattle'
 s.platform = Gem :: Platform :: RUBY 
 s.version ='0.1.0'
 s.authors = [Denis Yakovenko] 
 s.email = [[e-mail]] 
 s.require_paths = [lib] 
 s.license =MIT
 end 
  

成功构建后，我去了irb并尝试了 require'riverbattle'并得到错误：

LoadError：无法加载此文件 - riverbattle

from
/home/denis/.rvm/rubies/ruby-2.2.1/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in require'from
/home/denis/.rvm/rubies/ruby-2.2.1/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in 要求 from（irb）：1 from
/home/denis/.rvm/rubies/ruby-2.2.1/bin/irb:11:in`'

---

1）我在做什么错误 require ，来自不同目录的文件不能装？ （在查看stackoverflow问题后，我发现这是$ LOAD_PATH的问题，但我找不到如何修复代码。顺便说一句，需要 LoadErrors发生2）当我尝试使用 require_relative ，有时它会有帮助）

2）为了让irb中的宝石出现问题，由于 require 的最初问题引发错误，对吧？或者别的什么是错的？

$ b $ 3）如果我想将测试文件夹添加到gem，我可以添加文件夹 tests 到根目录并复制所有rspec文件？

更新

当我尝试运行 RUBYLIB =。 ruby riverbattle.rb 在终端中的 lib 文件夹中，它给了我：

< blockquote>

RUBYLIB =。 ruby riverbattle.rb
/home/denis/.rvm/rubies/ruby-2.2.1/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in require'：无法加载这样的文件 -
中的./field（LoadError）/home/denis/.rvm/rubies/ruby-2.2.1/lib/ruby/site_ruby/2.2.0/rubygems/core_ext /kernel_require.rb:54:inrequire'from
/home/denis/WEB/Bursa/riverbattle/lib/riverbattle/game.rb:1:in
< top（required）>'from
/home/denis/.rvm/rubies/ruby-2.2.1/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require。 rb：54： require'from
/home/denis/.rvm/rubies/ruby-2.2.1/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require .rb：54： require'from
/home/denis/WEB/Bursa/riverbattle/lib/riverbattle/base.rb:1:in
'from
/home/denis/.rvm/rubies/ruby-2.2.1/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in require'from
/home/denis/.rvm/rubies/ruby-2.2.1/lib/ruby/sit e_ruby / 2.2.0 / ruby​​gems / core_ext / kernel_require.rb：54：在 require'from riverbattle.rb：1：in''

解决方案

1。
#require 尝试加载绝对路径，如果失败，则从 $：加载到添加你的当前目录像这样运行脚本（bash，否则使用适当的方法为你的shell定义环境变量）：

  RUBYLIB =  ruby riverbattle.rb 
  

在您的 base.rb 要求如下：

 要求'riverbattle / game'
  

2。
请参阅#UPD部分

3。
为什么不呢？ （这是什么特定问题）

#UPD

第二个问题是因为你错过
$ b $ b

  s.files = Dir ['lib / *。rb'] + Dir ['lib / riverbattle / *。rb'] 
  

＃UPD2

总结这里正在为您的宝石设置工作。

I'm trying to create my first gem and here's its structure:

riverbattle
├── lib
│   ├── riverbattle
│   │   ├── base.rb
│   │   ├── colorful.rb
│   │   ├── computer.rb
│   │   ├── constants.rb
│   │   ├── exit_error.rb
│   │   ├── field.rb
│   │   ├── game.rb
│   │   ├── human.rb
│   │   ├── invalid_move_error.rb
│   │   ├── move.rb
│   │   ├── player.rb
│   │   ├── version.rb
│   │   └── victory_error.rb
│   └── riverbattle.rb
└── riverbattle.gemspec

When I am in the directory rivarbattle/lib/riverbattle and I run the command ruby base.rb, everything starts working as it should be.

The file base.rb is here:

require './game'
game = Game.new.start

But when I try to run it from the lib directory using command ruby riverbattle.rb, it fails with the following error:

/home/denis/.rvm/rubies/ruby-2.2.1/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in require': cannot load such file -- riverbattle/base (LoadError) from /home/denis/.rvm/rubies/ruby-2.2.1/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:inrequire' from riverbattle.rb:1:in `'

The file lib/riverbattle.rb look like this:

require 'riverbattle/base'

Despite the fact that the load fails I tried to build the gem with the following .gemspec file:

# -*- encoding: utf-8 -*-
lib = File.expand_path('../lib', __FILE__)
$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
require "riverbattle/version"

Gem::Specification.new do |s|
    s.name          = 'riverbattle'
    s.date          = '2015-07-04'
    s.summary       = 'Enjoy the game!'
    s.description   = 'A small simple game called the Riverbattle'
    s.platform      = Gem::Platform::RUBY
    s.version       = '0.1.0'
    s.authors       = ["Denis Yakovenko"]
    s.email         = ["[e-mail]"]
    s.require_paths = ["lib"]
    s.license       = "MIT"
end

After the successful build, I went to irb and tried require 'riverbattle' and got the error:

LoadError: cannot load such file -- riverbattle

from /home/denis/.rvm/rubies/ruby-2.2.1/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in require' from /home/denis/.rvm/rubies/ruby-2.2.1/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:inrequire' from (irb):1 from /home/denis/.rvm/rubies/ruby-2.2.1/bin/irb:11:in `'

---

1) What am I doing wrong with require that the files from different directories cannot be loaded? (After looking through stackoverflow questions I figured out that this is some problem with $LOAD_PATH, but I couldn't find out how to fix the code. BTW, such require LoadErrors happen quite often for some reason and then I try to use require_relative and sometimes it helps)

2) When I tried to lauch the gem in irb, the error was raised because of those initial problems with require, right? Or something else is wrong?

3) If I want to add tests folder to the gem, can I just add the folder tests to the root directory and copy all the rspec files there?

UPDATE

When I tried to run RUBYLIB="." ruby riverbattle.rb in the terminal in the lib folder, it gave me this:

RUBYLIB="." ruby riverbattle.rb /home/denis/.rvm/rubies/ruby-2.2.1/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in require': cannot load such file -- ./field (LoadError) from /home/denis/.rvm/rubies/ruby-2.2.1/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:inrequire' from /home/denis/WEB/Bursa/riverbattle/lib/riverbattle/game.rb:1:in <top (required)>' from /home/denis/.rvm/rubies/ruby-2.2.1/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:inrequire' from /home/denis/.rvm/rubies/ruby-2.2.1/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in require' from /home/denis/WEB/Bursa/riverbattle/lib/riverbattle/base.rb:1:in ' from /home/denis/.rvm/rubies/ruby-2.2.1/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in require' from /home/denis/.rvm/rubies/ruby-2.2.1/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:inrequire' from riverbattle.rb:1:in `'

解决方案

1. #require tries to load an absolute path, and if it fails it loads from $:, to add your current directory run the script like this (bash, otherwise use apropriate method to define environment variables for your shell):

RUBYLIB="." ruby riverbattle.rb

In your base.rb require as follows:

require 'riverbattle/game'

2. see #UPD section

3. why wouldn't you? (what's your specific problem with this?)

#UPD

The 2nd issue is because you miss #files in your gem specification, no files are included in your gem file, add something like this:

s.files = Dir['lib/*.rb'] + Dir['lib/riverbattle/*.rb']

#UPD2

Just to summarize here is working setup for your gem.

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