连接数据库
跟着rails tutorial 学习rails框架时，遇到了db链接的问题 问题 1 2 3 4 5 rake db:create failed PG::ConnectionBad: could not connect to server: No such file or directory Is the server running locally and accepting connections on Unix domain socket "/var/pgsql_socket/.s.PGSQL.5432"? Google之后发现是database.yml配置文件没有加上host：localhost配置项。 ...