![](/img/trans.png)
[英]Rails console: attribute returns false, but is shown correctly with to_yaml
[英]How to use to_yaml method in Rails, and remove '---'
我正在尝试以yaml格式生成哈希,但默认情况下,此方法总是在对象前添加---。
> h = {key1: 'v1', key2: 'v2'}
=> {:key1=>"v1", :key2=>"v2"}
> h.deep_stringify_keys.to_yaml
=> "---\n:key1: v1\n:key2: v2\n"
蛮力,但它会做的伎俩:
h.deep_stringify_keys.to_yaml[3..-1]
另一种方法是削减第一行:
IRB:
>> h = {key1: 'v1', key2: 'v2'}
>> require 'yaml'
>> h.to_yaml
=> "---\n:key1: v1\n:key2: v2\n"
>> h.to_yaml.lines[1..-1].join
=> ":key1: v1\n:key2: v2\n"
rails console:
>> h = {key1: 'v1', key2: 'v2'}
>> h.deep_stringify_keys.to_yaml
=> "---\nkey1: v1\nkey2: v2\n"
>> h.deep_stringify_keys.to_yaml.lines[1..-1].join
=> "key1: v1\nkey2: v2\n"
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.