to_yaml方法有时似乎很有用:

$foo = {:name => "Clem", :age => 43}

puts $foo.to_yaml

返回

--- 
:age: 43
:name: Clem

(这是否依赖于某些YAML模块被加载?或者这通常是可行的?)

把foo.to_json

可能会派上用场，因为json模块是默认加载的

to_yaml方法有时似乎很有用:

$foo = {:name => "Clem", :age => 43}

puts $foo.to_yaml

返回

--- 
:age: 43
:name: Clem

(这是否依赖于某些YAML模块被加载?或者这通常是可行的?)

如果你想打印一个已经缩进的JSON:

require 'json'
...
puts JSON.pretty_generate(JSON.parse(object.to_json))

我偶然发现了这条线索，因为我正在寻找类似的东西。我喜欢他们的回答，他们给了我一些想法，所以我测试了.to_hash方法，并在用例中工作得很好。秀:

object.to_hash

object.attribute_names

# => ["id", "name", "email", "created_at", "updated_at", "password_digest", "remember_token", "admin", "marketing_permissions", "terms_and_conditions", "disable", "black_list", "zero_cost", "password_reset_token", "password_reset_sent_at"]


object.attributes.values

# => [1, "tom", "tom@tom.com", Tue, 02 Jun 2015 00:16:03 UTC +00:00, Tue, 02 Jun 2015 00:22:35 UTC +00:00, "$2a$10$gUTr3lpHzXvCDhVvizo8Gu/MxiTrazOWmOQqJXMW8gFLvwDftF9Lm", "2dd1829c9fb3af2a36a970acda0efe5c1d471199", true, nil, nil, nil, nil, nil, nil, nil]