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我为我的 Mac OSX 机器下载了 postgres.app。我有一个 rails 应用程序,它连接并使用了 postgres 应用程序附带的 postgres 数据库。

现在我正在编写一个纯 Ruby 测试脚本(不是 Rails,纯 Ruby,甚至不是 Active Record)来尝试连接到 postgres 数据库实例。这些是我设置的步骤

 1) ran this command on the terminal:
    gem install pg -- --with-pg-config=/Applications/Postgres.app/Contents/MacOS/bin/pg_config

 2) Added this code to the test script:

   #!/usr/bin/env ruby
   #encoding: utf-8
   require "pg"


    @conn = PG.connect(
    :dbname => 'oData',
    :user => 'am',
    :password => '')

    @conn.exec("CREATE TABLE programs (id serial NOT NULL, name character varying(255);");

我从这个链接得到这个

当我运行此脚本时,出现以下错误:

   /Users/am/.rvm/gems/ruby-2.0.0-p247/gems/pg-0.16.0/lib/pg.rb:38:in `initialize': could 
    not connect to server: No such file or directory (PG::ConnectionBad)
Is the server running locally and accepting
connections on Unix domain socket "/var/pgsql_socket/.s.PGSQL.5432"?

我的调试工作:

  My postgres.app is up and running. 

  I looked at the pg gem [documentation][2] and my syntax seemed OK.

  The location of my postgres DB is entered in my bash script like so
   PATH="/Applications/Postgres.app/Contents/MacOS/bin:$PATH"

不知道下一步该怎么做。任何帮助将不胜感激,谢谢。

4

3 回答 3

0

您确定 postgres 正在侦听套接字吗?你确定用户名和密码正确吗?

我会倾向于尝试类似的东西

require 'pg'

puts PG::Connection.ping(:dbname => 'oData',:user => 'am',:password => '')
puts "trying with tcp"
puts PG::Connection.ping(:dbname => 'oData',:user => 'am',:password => '', :port => 5432)
于 2013-09-09T01:29:27.210 回答
0

我使用活动记录宝石使连接正常工作,这很好

于 2013-09-20T01:58:48.193 回答
0

连接设置对我有用。

但是该代码应该看起来像

@conn.exec("CREATE TABLE 程序 (id serial NOT NULL, name character(255))")

于 2014-07-03T07:53:00.443 回答