Ruby-on-rails 如何在 Rails 中对字符串进行 URL 转义？
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How do I URL-escape a string in Rails?
提问by Josh Glover
If I'm in an RHTML view in Rails, it is easy to URL-escape something:
如果我在 Rails 的 RHTML 视图中，很容易对某些内容进行 URL 转义：
<a href="/redirect?href=<%=u target %>">Foo</a>
How do I do this in a string? I'd like to do something like this:
我如何在字符串中执行此操作？我想做这样的事情：
<% redirect_href = "/redirect?#{url_escape target}&foo=bar&baz=some_other_stuff" -%>
<a href="<%= redirect_href =>">Foo</a>
This must be trivial, right?
这一定是微不足道的，对吧？
回答by Josh Glover
CGI.escapewill do it:
CGI.escape会这样做：
<% redirect_href = "/redirect?#{CGI.escape target}&foo=bar&baz=some_other_stuff" -%>
<a href="<%= redirect_href =>">Foo</a>
回答by Ernest
Rails (activesupport) defines Hash#to_param(aliased to Hash#to_query):
Rails ( activesupport) 定义Hash#to_param（别名为Hash#to_query）：
{foo: 'asd asdf', bar: '"<#$dfs'}.to_param
# => "bar=%22%3C%23%24dfs&foo=asd+asdf"
It's worth noting that it sorts query keys (for HTTP caching).
值得注意的是，它对查询键进行排序（用于 HTTP 缓存）。
Hash#to_paramalso accepts optional namespace parameter:
Hash#to_param还接受可选的命名空间参数：
{name: 'David', nationality: 'Danish'}.to_param('user')
# => "user[name]=David&user[nationality]=Danish"
http://api.rubyonrails.org/classes/Hash.html#method-i-to_param
http://api.rubyonrails.org/classes/Hash.html#method-i-to_param
回答by Viktor Trón
can be used from anywhere, part of ruby std lib.
可以从任何地方使用，是 ruby std lib 的一部分。
回答by thekingoftruth
Use either CGI::escapeor ERB::Util.url_encodebut not URI.encode.
使用CGI::escapeor ERB::Util.url_encodebut not URI.encode。
URI.escapehas been deprecated circa Ruby 1.9.2: What's the difference between URI.escape and CGI.escape?
URI.escape在 Ruby 1.9.2 左右已被弃用：URI.escape 和 CGI.escape 之间有什么区别？
