我正在关注最近设置PostgreSQL的RailsCast,但是我无法运行initdb /usr/local/var/postgres命令.每次运行它,我都会收到此错误:
The files belonging to this database system will be owned by user "Construct".
This user must also own the server process.
The database cluster will be initialized with locale en_US.UTF-8.
The default database encoding has accordingly been set to UTF8.
The default text search configuration will be set to "english".
creating directory /usr/local/var/postgres ... initdb: could not create directory "/usr/local/var": Permission denied
我在网上搜索过,但未能找到解决此错误的方法.每次我尝试启动rails服务器,甚至是rails console我都会得到一个crack/xml (LoadError).任何人都有任何他们认为可以帮助我正确运行的建议吗？
Construct Coverage: rails s
/Users/Construct/.rvm/gems/ruby-1.9.3-p194@coverage/gems/ap-0.1.1/lib/ap.rb:2:in `require': cannot load such file -- crack/xml (LoadError)
from /Users/Construct/.rvm/gems/ruby-1.9.3-p194@coverage/gems/ap-0.1.1/lib/ap.rb:2:in `<top (required)>'
from /Users/Construct/.rvm/gems/ruby-1.9.3-p194@global/gems/bundler-1.1.5/lib/bundler/runtime.rb:68:in `require'
from /Users/Construct/.rvm/gems/ruby-1.9.3-p194@global/gems/bundler-1.1.5/lib/bundler/runtime.rb:68:in `block (2 levels) in require'
from /Users/Construct/.rvm/gems/ruby-1.9.3-p194@global/gems/bundler-1.1.5/lib/bundler/runtime.rb:66:in `each'
from /Users/Construct/.rvm/gems/ruby-1.9.3-p194@global/gems/bundler-1.1.5/lib/bundler/runtime.rb:66:in `block in require'
from /Users/Construct/.rvm/gems/ruby-1.9.3-p194@global/gems/bundler-1.1.5/lib/bundler/runtime.rb:55:in `each'
from /Users/Construct/.rvm/gems/ruby-1.9.3-p194@global/gems/bundler-1.1.5/lib/bundler/runtime.rb:55:in `require'
from /Users/Construct/.rvm/gems/ruby-1.9.3-p194@global/gems/bundler-1.1.5/lib/bundler.rb:119:in `require'
from /Users/Construct/Dropbox/rails_projects/Coverage/config/application.rb:7:in `<top (required)>'
from /Users/Construct/.rvm/gems/ruby-1.9.3-p194@coverage/gems/railties-3.2.1/lib/rails/commands.rb:53:in `require'
from /Users/Construct/.rvm/gems/ruby-1.9.3-p194@coverage/gems/railties-3.2.1/lib/rails/commands.rb:53:in `block in <top (required)>'
from /Users/Construct/.rvm/gems/ruby-1.9.3-p194@coverage/gems/railties-3.2.1/lib/rails/commands.rb:50:in `tap'
from /Users/Construct/.rvm/gems/ruby-1.9.3-p194@coverage/gems/railties-3.2.1/lib/rails/commands.rb:50:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'
我试图安装crack gem然后运行bundler但是我仍然给出了相同的错误,即使重启终端后也是如此.所以我不确定如何解决这个问题.