Ruby on rails rakedb：迁移postgreSQL

我终于得到了gem pg来安装。现在，当我迁移数据库时，我得到以下信息：

$ rake db:migrate
(in c:/rubyDev/bsbaslic)
rake aborted!
no such file to load -- 1.9/pg_ext
c:/Ruby192/lib/ruby/gems/1.9.1/gems/pg-0.10.0/lib/pg.rb:10:in `require'
c:/Ruby192/lib/ruby/gems/1.9.1/gems/pg-0.10.0/lib/pg.rb:10:in `<top (required)>'
c:/Ruby192/lib/ruby/gems/1.9.1/gems/bundler-1.0.3/lib/bundler/runtime.rb:64:in `require'
c:/Ruby192/lib/ruby/gems/1.9.1/gems/bundler-1.0.3/lib/bundler/runtime.rb:64:in `block (2 levels) in require'
c:/Ruby192/lib/ruby/gems/1.9.1/gems/bundler-1.0.3/lib/bundler/runtime.rb:62:in `each'
c:/Ruby192/lib/ruby/gems/1.9.1/gems/bundler-1.0.3/lib/bundler/runtime.rb:62:in `block in require'
c:/Ruby192/lib/ruby/gems/1.9.1/gems/bundler-1.0.3/lib/bundler/runtime.rb:51:in `each'
c:/Ruby192/lib/ruby/gems/1.9.1/gems/bundler-1.0.3/lib/bundler/runtime.rb:51:in `require'
c:/Ruby192/lib/ruby/gems/1.9.1/gems/bundler-1.0.3/lib/bundler.rb:112:in `require'
c:/rubyDev/bsbaslic/config/application.rb:7:in `<top (required)>'
<internal:lib/rubygems/custom_require>:29:in `require'
<internal:lib/rubygems/custom_require>:29:in `require'
c:/rubyDev/bsbaslic/Rakefile:4:in `<top (required)>'
c:/Ruby192/lib/ruby/1.9.1/rake.rb:2373:in `load'
c:/Ruby192/lib/ruby/1.9.1/rake.rb:2373:in `raw_load_rakefile'
c:/Ruby192/lib/ruby/1.9.1/rake.rb:2007:in `block in load_rakefile'
c:/Ruby192/lib/ruby/1.9.1/rake.rb:2058:in `standard_exception_handling'
c:/Ruby192/lib/ruby/1.9.1/rake.rb:2006:in `load_rakefile'
c:/Ruby192/lib/ruby/1.9.1/rake.rb:1991:in `run'
c:/Ruby192/bin/rake:31:in `<main>'

$rake数据库：迁移
（c:/rubyDev/bsbaslic格式）
雷克流产了！
没有要加载的文件--1.9/pg_ext
c:/Ruby192/lib/ruby/gems/1.9.1/gems/pg-0.10.0/lib/pg.rb:10:in'require'
c:/Ruby192/lib/ruby/gems/1.9.1/gems/pg-0.10.0/lib/pg.rb:10:in`'
c:/Ruby192/lib/ruby/gems/1.9.1/gems/bundler-1.0.3/lib/bundler/runtime.rb:64:in'require'
c:/Ruby192/lib/ruby/gems/1.9.1/gems/bundler-1.0.3/lib/bundler/runtime.rb:64:in'block（2级）in require'
c:/Ruby192/lib/ruby/gems/1.9.1/gems/bundler-1.0.3/lib/bundler/runtime.rb:62:in'each'
c:/Ruby192/lib/ruby/gems/1.9.1/gems/bundler-1.0.3/lib/bundler/runtime.rb:62:in'block in require'
c:/Ruby192/lib/ruby/gems/1.9.1/gems/bundler-1.0.3/lib/bundler/runtime.rb:51:in'each'
c:/Ruby192/lib/ruby/gems/1.9.1/gems/bundler-1.0.3/lib/bundler/runtime.rb:51:in'require'
c:/Ruby192/lib/ruby/gems/1.9.1/gems/bundler-1.0.3/lib/bundler.rb:112:in'require'
c:/rubyDev/bsbasic/config/application.rb:7:in`'
：29:在'require'中
：29:在'require'中
c:/rubyDev/bsbaslic/Rakefile:4:in`'
c:/Ruby192/lib/ruby/1.9.1/rake.rb:2373:in'load'
c:/Ruby192/lib/ruby/1.9.1/rake.rb:2373:in'raw\u load\u rakefile'
c:/Ruby192/lib/ruby/1.9.1/rake.rb:2007:in'block in load_rakefile'
c:/Ruby192/lib/ruby/1.9.1/rake.rb:2058:in'standard_exception_handling'
c:/Ruby192/lib/ruby/1.9.1/rake.rb:2006:in'load_rakefile'
c:/Ruby192/lib/ruby/1.9.1/rake.rb:1991:in'run'
c:/Ruby192/bin/rake:31:in`'

---

有人知道它在找什么吗？我有一个pg_ext.so文件，它和pg.rb在同一个目录中

Windows程序无法加载

。因此

文件-它们将加载

.dll

文件。您需要一个为Windows编译的

pg

版本，或者您需要在Linuxy环境（如msys或cygwin）中运行Ruby。

问题在于您的pg gem版本。windows pg 0.9.0有一个特殊版本。 要使其在windows上工作，请执行以下操作：

卸载当前的pg 0.10.0

安装pg如下：gem安装pg--version=0.9.0--with pg config=/short/path/to/postresql/bin （要获得短路径，您只需将目录更改为PostgrSQL bin，然后在cmd中键入命令，它将自动将路径更改为短路径）

然后编辑项目gem文件以使用正确的pg gem版本（0.9.0）

就这样

---

祝你好运

我在msys跑步。我无法让“gem install pg”在常规命令提示符下工作。还有其他想法吗？当你运行“gem安装”时，具体会发生什么？请在你的问题中加上这一点。你在运行什么版本的Postgres gem（pg）？10个月后，更高版本现在可以工作了吗？我需要pg和activerecord postgis适配器。activerecord postgis适配器似乎至少需要0.10.0。