如何在Ruby中将字符引用转换为UTF-8字符串？

Question

我有一些来自Feed的内容。在这些馈送中，UTF-8字符通常被编码为字符引用，即“å”是“＆amp;＃xE5;”。为了避免在我的视图中对这些进行双重编码（即“＆amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp我怎么能在Ruby中做到这一点？

我想：

“＆amp;＃xE5;”。convert_to_utf8 =＆gt; “A”

Answer 1

HTMLEntities gem旨在实现这一目标。

require 'htmlentities'
coder = HTMLEntities.new
string = "élan"
coder.decode(string) # => "élan"
# or
string.decode_entities # => "élan"