Rails：用空格取代GET-Request [英] Rails: Plus sign in GET-Request replaced by space

问题描述

在Rails 3（Ruby 1.9.2）中发送请求

 开始GET/ controller / action？path = / 41_ +
  

但参数列表如下所示：

  {path=>/ 41_，
controller=>controller，
action=> ;action} 
  

这里怎么回事？ - ， * 或。标志正常工作，只是 + 这将被一个空格替换。 这是正常的URL编码，加号是空格的简写：

在查询字符串中，加号被保留为空格的简写符号。因此，真正的加号必须被编码。此方法用于使查询URI更容易在不允许空格的系统中传递。

从HTML5标准：

该字符是U + 0020 SPACE字符

用一个U + 002B PLUS SIGN字符替换该字符+）。

In Rails 3 (Ruby 1.9.2) I send an request

 Started GET "/controller/action?path=/41_+"

But the parameter list looks like this:

 {"path"=>"/41_ ",
   "controller"=>"controller",
   "action"=>"action"}

Whats going wrong here? The -, * or . sign works fine, its just the +which will be replaced by a space.

解决方案

That's normal URL encoding, the plus sign is a shorthand for a space:

Within the query string, the plus sign is reserved as shorthand notation for a space. Therefore, real plus signs must be encoded. This method was used to make query URIs easier to pass in systems which did not allow spaces.

And from the HTML5 standard:

The character is a U+0020 SPACE character
Replace the character with a single U+002B PLUS SIGN character (+).

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