rails gem系列之settingslogic

发表于   |   分类于   |  

##概要

可以从配置文件简单读取配置的gem

github地址：https://github.com/binarylogic/settingslogic

安装

1
gem install settingslogic

定义class app/models/settings.rb

1
2
3
4
class Settings < Settingslogic
  source "#{Rails.root}/config/application.yml"
  namespace Rails.env
end

创建配置文件 config/application.yml

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
defaults: &defaults
  cool:
    saweet: nested settings
  neat_setting: 24
  awesome_setting: <%= "Did you know 5 + 5 = #{5 + 5}?" %>

development:
  <<: *defaults
  neat_setting: 800

test:
  <<: *defaults

production:
  <<: *defaults

之后在rails console里面测试一下，就可以拿到配置文件里的值了

1
2
3
4
5
6
7
8
9
10
11
12
13
14
>> Rails.env
=> "development"

>> Settings.cool
=> "#<Settingslogic::Settings ... >"

>> Settings.cool.saweet
=> "nested settings"

>> Settings.neat_setting
=> 800

>> Settings.awesome_setting
=> "Did you know 5 + 5 = 10?"