升级到 OSX Mavericks 后修复 postgresql

最近对OSX Mavericks的升级 destruct 了我的Rails应用程序的数据库连接.

当我try 从数据库中提取时，服务器返回以下错误:

PG::ConnectionBad (could not connect to server: Connection refused
    Is the server running on host "localhost" (::1) and accepting
    TCP/IP connections on port 5432?
could not connect to server: Connection refused
    Is the server running on host "localhost" (127.0.0.1) and accepting
    TCP/IP connections on port 5432?
could not connect to server: Connection refused
    Is the server running on host "localhost" (fe80::1) and accepting
    TCP/IP connections on port 5432?

当我试着跑psql英里时，我得到:

psql: could not connect to server: No such file or directory
    Is the server running locally and accepting
    connections on Unix domain socket "/tmp/.s.PGSQL.5432"?

我try 过互联网上的许多解决方案.比如在我的数据库中重新安装pg gem并设置host:localhost.yml.My/usr/local/var/postgres/pg_hba.档案上写着:

# TYPE  DATABASE        USER            ADDRESS                 METHOD

# "local" is for Unix domain socket connections only
local   all             all                                     trust
# IPv4 local connections:
host    all             all             127.0.0.1/32            trust
# IPv6 local connections:
host    all             all             ::1/128                 trust
# Allow replication connections from localhost, by a user with the
# replication privilege.
#local   replication     RyanKing                                trust
#host    replication     RyanKing        127.0.0.1/32            trust
#host    replication     RyanKing        ::1/128                 trust

哪个psql返回:/usr/local/bin/psql

有什么解决办法吗？一些解决方案建议我需要将$PATH更改为以前安装的postgres，因为新版本的postgres将添加Mavericks.我如何找到它的位置？它很可能是用brew 软件安装的，但我不确定.