Question

完成Rails Tutorial之后我想将其扩展到个人应用程序中，因此我创建了另一个目录并将所有文件从 tutorialFolder 移动/复制到 appFolder

然而，当我尝试再次设置宝石时，我遇到了一些问题。

bundle install返回：

An error occurred while installing pg (0.17.1), and Bundler cannot continue. 
Make sure that `gem install pg -v '0.17.1'` succeeds before bundling.

所以我尝试gem install pg -v '0.17.1（或bundle update）并获取：

You don't have write permissions for the /Library/Ruby/Gems/2.0.0 directory.

搜索StackOverflow我发现了Installing gem or updating RubyGems fails with permissions error

其中解释了/Library/Ruby/Gems/2.0.0

这是Apple安装的Ruby版本，供自己使用。如果您知道自己在做什么，可以对其进行微小的修改，但是由于您不确定权限问题，我说这不是一个好主意。沿着那条赛道继续前进。

为了避免上述情况，我尝试brew install ruby成功，但卡在bundle install

我无法追溯到哪里，但我也试图删除Gemfile.lock但是没有做任何事情。

其他信息：ruby -v＆gt;＆gt;＆gt; ruby 2.0.0p481 (2014-05-08 revision 45883) [universal.x86_64-darwin14]

rails -v＆gt;＆gt;＆gt; bin/spring:10:in 'read': No such file or directory - /Gemfile.lock (Errno::ENOENT)

bundle install --path vendor/bundle＆gt;＆gt;＆gt; An error occurred while installing pg (0.17.1), and Bundler cannot continue.

谢谢，

编辑*我尝试从头开始使用rails new app然而得到了这个：

Bundle complete! 12 Gemfile dependencies, 54 gems now installed.
Use `bundle show [gemname]` to see where a bundled gem is installed.
run  bundle exec spring binstub --all
/Library/Ruby/Gems/2.0.0/gems/bundler-         1.10.5/lib/bundler/spec_set.rb:92:in `block in materialize': Could not find  i18n-0.7.0 in any of the sources (Bundler::GemNotFound)
from /Library/Ruby/Gems/2.0.0/gems/bundler-  1.10.5/lib/bundler/spec_set.rb:85:in `map!'
from /Library/Ruby/Gems/2.0.0/gems/bundler-1.10.5/lib/bundler/spec_set.rb:85:in `materialize'
from /Library/Ruby/Gems/2.0.0/gems/bundler-1.10.5/lib/bundler/definition.rb:140:in `specs'
from /Library/Ruby/Gems/2.0.0/gems/bundler-1.10.5/lib/bundler/definition.rb:185:in `specs_for'
from /Library/Ruby/Gems/2.0.0/gems/bundler-1.10.5/lib/bundler/definition.rb:174:in `requested_specs'
from /Library/Ruby/Gems/2.0.0/gems/bundler-1.10.5/lib/bundler/environment.rb:18:in `requested_specs'
from /Library/Ruby/Gems/2.0.0/gems/bundler-1.10.5/lib/bundler/runtime.rb:13:in `setup'
from /Library/Ruby/Gems/2.0.0/gems/bundler-1.10.5/lib/bundler.rb:127:in `setup'
from /Library/Ruby/Gems/2.0.0/gems/bundler-1.10.5/lib/bundler/setup.rb:18:in `<top (required)>'
from /usr/local/Cellar/ruby/2.2.2/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
from /usr/local/Cellar/ruby/2.2.2/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'

以上版块已使用rvm gemset empty修复，然后我可以设置VANILLA rails应用，仍然无法与教程结束同步

Answer 1

听起来你试图通过复制所有文件来创建rails应用程序的副本。我会做的

-(void)viewWillDisppear:(BOOL)animated {
    [super viewWillDisppear:animated];
    [[NSNotificationCenter defaultCenter] removeObserver:self];

}

要使用rails设置创建新目录，只需复制rails new appFolder中的所有文件以替换tutorialFolder中的文件。

Answer 2

从rails this section开始，我添加了以下代码：

group :production do
  gem 'pg',             '0.17.1'
  gem 'rails_12factor', '0.0.2'
end

用

解释

还要注意添加了rails_12factor gem，Heroku使用它来提供静态资源，如图像和样式表。生成的Gemfile如清单1.14所示。

要准备系统部署到生产，我们运行bundle   使用特殊标志安装以防止本地安装任何   生产宝石（在这种情况下由pg和   rails_12factor）：

bundle install --without production

一切正常。

未能在OSX上设置（我自己的）预构建的Rails应用程序

2 个答案: