How do I encode/decode HTML entities in Ruby?

2019-01-01 08:15发布

站内问答 / Ruby
1172 7 5

I am trying to decode some HTML entities, such as '&amp;lt;' becoming '<'.

I have an old gem (html_helpers) but it seems to have been abandoned twice.

Any recommendations? I will need to use it in a model.

标签： html ruby
举报
7条回答
看风景的人
2楼-- · 2019-01-01 08:31

HTMLEntities can do it:

: jmglov@laurana; sudo gem install htmlentities
Successfully installed htmlentities-4.2.4
: jmglov@laurana;  irb
irb(main):001:0> require 'htmlentities'
=> []
irb(main):002:0> HTMLEntities.new.decode "&iexcl;I&#39;m highly&nbsp;annoyed with character references!"
=> "¡I'm highly annoyed with character references!"
查看更多
0人赞 添加讨论(0) 举报
ら面具成の殇う
3楼-- · 2019-01-01 08:37

If you don't want to add a new dependency just to do this (like HTMLEntities) and you're already using Hpricot, it can both escape and unescape for you. It handles much more than CGI:

Hpricot.uxs "foo&nbsp;b&auml;r"
=> "foo bär"
查看更多
0人赞 添加讨论(0) 举报
无色无味的生活
4楼-- · 2019-01-01 08:39

I think Nokogiri gem is also a good choice. It is very stable and has a huge contributing community.

Samples:

a = Nokogiri::HTML.parse "foo&nbsp;b&auml;r"    
a.text 
=> "foo bär"

or

a = Nokogiri::HTML.parse "&iexcl;I&#39;m highly&nbsp;annoyed with character references!"
a.text
=> "¡I'm highly annoyed with character references!"
查看更多
0人赞 添加讨论(0) 举报
怪性笑人.
5楼-- · 2019-01-01 08:42

To decode characters in Rails use:

<%= raw '<html>' %>

So, 

<%= raw '&lt;br&gt;' %>

would output

<br>
查看更多
0人赞 添加讨论(0) 举报
人间绝色
6楼-- · 2019-01-01 08:42

You can use htmlascii gem:

Htmlascii.convert string
查看更多
0人赞 添加讨论(0) 举报
笑指拈花
7楼-- · 2019-01-01 08:55 
<% str="<h1> Test </h1>" %>

result: &lt; h1 &gt; Test &lt; /h1 &gt;

<%= CGI.unescapeHTML(str).html_safe %>
查看更多
0人赞 添加讨论(0) 举报
1 2 下一页
登录 后发表回答
相关问题
查看全部
相关文章
查看全部
收藏的人(5)