Rails 4.2 database.yml没有读取rbenv-vars变量

Question

我的VPS 安装了rbenv-vars,我在rails app里面的config目录中找到.rbenv-vars文件.我假装在其中加载数据库密码,但我做错了,因为rake db:create给了我一个无密码错误.当我将密码写为字符串时,Rake工作.

配置/ .rbenv-VARS

DB_PASS=my_db_password

---

配置/ database.yml的

  password: $DB_PASS                # Doesn't work
  #password: <%= ENV['DB_PASS'] %>  # Doesn't work
  # password: my_db_password        # Works

---

我让所有变量都运行了 rbenv vars

ssh> rbenv vars

export DB_PASS='my_db_password'

Answer 1

通过https://github.com/rails/rails/issues/19256#issuecomment-102980786

你可能需要做一个

spring stop

然后再试一次.这对我有用.

Answer 2

我也有同样的问题。我知道我的变量设置正确

$ rbenv vars
# /Users/dave/code/project/.rbenv-vars
export SQL_SERVER_HOST='10.0.0.1'
export SQL_SERVER_PORT='1433'
export SQL_SERVER_USERNAME='project'
export SQL_SERVER_PASSWORD='password'
export SQL_SERVER_DATABASE='project-development'

$ cat config/database.yml
development:
  adapter:  sqlserver
  host:     <%= ENV['SQL_SERVER_HOST'] %>
  port:     <%= ENV['SQL_SERVER_PORT'] %>
  username: <%= ENV['SQL_SERVER_USERNAME'] %>
  password: <%= ENV['SQL_SERVER_PASSWORD'] %>
  database: <%= ENV['SQL_SERVER_DATABASE'] %>
  mode:     dblib

结果是：

$ rails c
Inside TinyTds#initialize with {:dataserver=>nil, :host=>nil, :port=>nil, :username=>nil, :password=>nil, :database=>nil, :tds_version=>nil, :appname=>"project", :login_timeout=>nil, :timeout=>nil, :encoding=>nil, :azure=>nil}
/Users/dave/code/project/.gems/bundler/gems/tiny_tds-afef8218c3c0/lib/tiny_tds/client.rb:65:in `initialize': missing :host option if no :dataserver given (ArgumentError)
...

也许是因为rbenv-vars还没有将变量加载到我的会话中？

有趣的是，当我将显式值放入 中时config/database.yml，它不会tiny_tds在 Rails 服务器启动时初始化，而是在加载第一个模型时初始化：

$ rails c
Loading development environment (Rails 4.2.2)
[1] pry(main)> # No TinyTds#initialize!!!
[2] pry(main)> User.first
Inside TinyTds#initialize with {:dataserver=>nil, :host=>"10.0.0.1", :port=>1433, :username=>"project", :password=>"password", :database=>"project-development", :tds_version=>nil, :appname=>"project", :login_timeout=>nil, :timeout=>nil, :encoding=>nil, :azure=>nil}
  SQL (0.6ms)  USE [project-development]
  User Load (3.7ms)  EXEC sp_executesql N'SELECT  [users].* FROM [users]  ORDER BY [users].[id] ASC OFFSET 0 ROWS FETCH NEXT 1 ROWS ONLY'
=> #<User:0x007fb8a0929fe0
 id: 1,
 ...

那么，rbenv-vars一旦 Rails 启动，似乎工作正常，但在启动过程中就不行了？