Question

我正在尝试按照教程启动并运行但是我在大约2年前尝试过使用Hartl书失败了所以现在我安装了所有这些不同的东西，我不知道它们在哪里，它们是什么，或者如何摆脱它们。我甚至不记得我安装的所有东西。我在OSX 10.6.8

教程说要做rails new issues所以我这样做了，它说我应该看到一堆东西被创建，然后是捆绑器。我没有看到捆绑者。我在另一个SO帖子上找到了一些说明，并按照它们来解决此错误：

xxxx-xxxx-macbook-pro:issues Ryan$ bundle install
Fetching gem metadata from http://rubygems.org/...........
Fetching gem metadata from http://rubygems.org/..
Resolving dependencies...
Bundler could not find compatible versions for gem "bundler":
In Gemfile:
rails (= 3.0.1) ruby depends on
  bundler (~> 1.0.0) ruby
Current Bundler version:
bundler (1.3.5)
This Gemfile requires a different version of Bundler.
Perhaps you need to update Bundler by running `gem install bundler`?

现在如果我做rails -v我就明白了：

/Users/Ryan/.rvm/gems/ruby-1.9.2-p318@rails3tutorial/gems/bundler-1.3.5/lib/bundler/resolver.rb:130:in `block in resolve': Bundler could not find compatible versions for gem "bundler": (Bundler::VersionConflict)
In Gemfile:
rails (= 3.0.1) ruby depends on
  bundler (~> 1.0.0) ruby
Current Bundler version:
bundler (1.3.5)
This Gemfile requires a different version of Bundler.
Perhaps you need to update Bundler by running `gem install bundler`?
from /Users/Ryan/.rvm/gems/ruby-1.9.2-p318@rails3tutorial/gems/bundler-1.3.5/lib/bundler/resolver.rb:128:in `catch'
from /Users/Ryan/.rvm/gems/ruby-1.9.2-p318@rails3tutorial/gems/bundler-1.3.5/lib/bundler/resolver.rb:128:in `resolve'
from /Users/Ryan/.rvm/gems/ruby-1.9.2-p318@rails3tutorial/gems/bundler-1.3.5/lib/bundler/definition.rb:179:in `resolve'
from /Users/Ryan/.rvm/gems/ruby-1.9.2-p318@rails3tutorial/gems/bundler-1.3.5/lib/bundler/definition.rb:114:in `specs'
from /Users/Ryan/.rvm/gems/ruby-1.9.2-p318@rails3tutorial/gems/bundler-1.3.5/lib/bundler/definition.rb:159:in `specs_for'
from /Users/Ryan/.rvm/gems/ruby-1.9.2-p318@rails3tutorial/gems/bundler-1.3.5/lib/bundler/definition.rb:148:in `requested_specs'
from /Users/Ryan/.rvm/gems/ruby-1.9.2-p318@rails3tutorial/gems/bundler-1.3.5/lib/bundler/environment.rb:18:in `requested_specs'
from /Users/Ryan/.rvm/gems/ruby-1.9.2-p318@rails3tutorial/gems/bundler-1.3.5/lib/bundler/runtime.rb:13:in `setup'
from /Users/Ryan/.rvm/gems/ruby-1.9.2-p318@rails3tutorial/gems/bundler-1.3.5/lib/bundler.rb:120:in `setup'
from /Library/firstapp/issues/config/boot.rb:8:in `<top (required)>'
from <internal:lib/rubygems/custom_require>:29:in `require'
from <internal:lib/rubygems/custom_require>:29:in `require'
from script/rails:5:in `<main>'

另一个SO主题是说我是否需要安装捆绑包：

xxxxx-xxxx-macbook-pro:issues Ryan$ gem list bundler
*** LOCAL GEMS ***
bundler (1.3.5, 1.0.22)

因此，自1.0.22表示使用它后我删除了1.3.5

xxxx-xxxx-macbook-pro:issues Ryan$ gem uninstall bundler -v 1.3.5
Successfully uninstalled bundler-1.3.5

无论我是否更新此内容，我都会收到错误。

我很迷茫。我认为rails3tutorial是一年多以前，当我尝试Hartl书和firstapp是我试图把我正在尝试的教程。如果有人有任何线索，我真的很想知道这一点。也许有一天，我甚至可以通过设置并在Ruby On Rails上做一些有效的工作。

Answer 1

问题我可能是你过时的rails版本（你使用3.0，3.2是当前版本）。作为一般建议：尽量使用每个宝石的最新版本。

要更新您的宝石/红宝石，请执行

rvm get stable # see the note at the bottom, if that does not work
rvm install 1.9.3 # may take some time
rvm use 1.9.3 --default
gem install bundler
gem install rails
rails new issues

注意：如果rvm get stable不起作用，请查看this SO answer。

Answer 2

幸运的是，你正在使用RVM！您可以从一个干净的平板开始，而不用担心解决旧的依赖关系。你可以安装1.9.3（你在1.9.2上），创建一个干净的gemset，并按照更新的3.2或4.0教程。如果您需要任何帮助，请告诉我。

你将使用Rails做一些有效的工作。坚持很重要。

Rails -v给了我错误，我找到的唯一解决方案给出了不同的错误

2 个答案: