ruby 如何将值保存到 YAML 文件中?
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How do you save values into a YAML file?
提问by freedom
Inside my persist.yml file. I have the following key-value pair...
在我的 persist.yml 文件中。我有以下键值对...
session = 0
How do I update the YAML file such that:
如何更新 YAML 文件,以便:
session = 2
回答by Christophe Biocca
Using ruby-1.9.3 (Approach may not work in older versions).
使用 ruby-1.9.3(方法可能不适用于旧版本)。
I'm assuming the file looks like this (adjust code accordingly):
我假设文件看起来像这样(相应地调整代码):
---
content:
session: 0
and is called /tmp/test.yml
并被称为 /tmp/test.yml
Then the code is just:
那么代码就是:
require 'yaml' # Built in, no gem required
d = YAML::load_file('/tmp/test.yml') #Load
d['content']['session'] = 2 #Modify
File.open('/tmp/test.yml', 'w') {|f| f.write d.to_yaml } #Store

