ruby-on-rails - "no such file to load -- pg"尝试 rake db :create

Question

我的问题的症状很简单:

$ rake db:create
(in /home/jason/projects/blog)
rake aborted!
no such file to load -- pg

(See full trace by running task with --trace)

我已经成功运行了 bundle install 和 gem install pg，所以我不知道我还需要做什么。

如果有帮助，这是我的`config/database.yml:

# SQLite version 3.x
#   gem install sqlite3-ruby (not necessary on OS X Leopard)
development:
  adapter: postgresql
  encoding: unicode
  database: blog_development
  pool: 5
  username: blog
  password: foo

# Warning: The database defined as "test" will be erased and
# re-generated from your development database when you run "rake".
# Do not set this db to the same as development or production.
test:
  adapter: postgresql
  encoding: unicode
  database: blog_development
  pool: 5
  username: blog
  password: foo

production:
  adapter: sqlite3
  database: db/production.sqlite3
  pool: 5
  timeout: 5000

Answer 1

我想通了。如果我在我的 config/database.yml 中使用 pg 而不是 postgresql，它就可以工作。