Question

我是Ruby的新手（来自Java背景）并且可以从Git存储库访问RoR项目。我能够通过自制软件安装rbenv和Postgres构建Ruby，使用正确的标志安装“pg”gem。我在项目上做了“捆绑安装”的任何方式并创建了一个捆绑包，当我去启动服务器时：...任何帮助都将受到赞赏！

$ rails s
/Users//Projects/The /vendor/bundle/gems/pg-0.14.1/lib/pg.rb:4:in require': cannot load such file -- pg_ext (LoadError)

from /Users//Projects/The Usic/vendor/bundle/gems/pg-0.14.1/lib/pg.rb:4:in <top (required)>'

from /Users//.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/bundler-1.3.0/lib/bundler/runtime.rb:72:in require'

from /Users//.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/bundler-1.3.0/lib/bundler/runtime.rb:72:in block (2 levels) in require'

from /Users//.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/bundler-1.3.0/lib/bundler/runtime.rb:70:in each'

from /Users//.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/bundler-1.3.0/lib/bundler/runtime.rb:70:in block in require'

from /Users//.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/bundler-1.3.0/lib/bundler/runtime.rb:59:in each'

from /Users//.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/bundler-1.3.0/lib/bundler/runtime.rb:59:in require'

from /Users//.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/bundler-1.3.0/lib/bundler.rb:132:in require'

Answer 1

问题也出现在Fedora 17中。

卸载“pg”gem：

gem uninstall pg

运行bundle（假设Gemfile包含“pg”gem）：

bundle

Answer 2

将 pg gem添加到Gemfile。然后运行：

bundle install
bundle update

Answer 3

我很好奇你是否在通过brew安装postgres之前或之后安装了pg gem？

如果在您通过brew安装Postgres之前安装了pg，您可能需要将其删除并重新安装，以便根据您当前版本的Postgres进行编译。

旁注：postgresapp是通过自制软件安装postgres的更好的替代方法：http://postgresapp.com/

Answer 4

我已经安装了pg 宝石清单pg

我也遇到了这个问题，我让它发挥了作用。首先，运行命令： $ gem install pg --pre
已成功安装pg-0.21.0-x64-mingw32

接下来，您更新Gemfile：gem'pg'，'〜＆gt; 0.21.0' 。就是这样。

我的rubygems环境如下：

RubyGems Environment:
  - RUBYGEMS VERSION: 2.6.12
  - RUBY VERSION: 2.3.3 (2016-11-21 patchlevel 222) [x64-mingw32]
  - INSTALLATION DIRECTORY: C:/Ruby23-x64/lib/ruby/gems/2.3.0
  - USER INSTALLATION DIRECTORY: C:/Users/armano/.gem/ruby/2.3.0
  - RUBY EXECUTABLE: C:/Ruby23-x64/bin/ruby.exe
  - EXECUTABLE DIRECTORY: C:/Ruby23-x64/bin
  - SPEC CACHE DIRECTORY: C:/Users/armano/.gem/specs
  - SYSTEM CONFIGURATION DIRECTORY: C:/ProgramData
  - RUBYGEMS PLATFORMS:
    - ruby
    - x64-mingw32
  - GEM PATHS:
     - C:/Ruby23-x64/lib/ruby/gems/2.3.0
     - C:/Users/armano/.gem/ruby/2.3.0
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :backtrace => false
     - :bulk_threshold => 1000
     - "gem" => "--no-ri --no-rdoc"
  - REMOTE SOURCES:
     - https://rubygems.org/

Answer 5

如果在安装gem期间，pq安装不在路径中，那么gem无法找到它。比宝石不能正常工作。

检查路径（尝试从命令行启动psql）。
卸载pg-gem：gem unistall pg
并重新安装：bundle install或gem install pg

Rails上的Ruby / PgSQL错误启动：无法加载此类文件--pg_ext（LoadError）

5 个答案: