使用Ruby Curb传递GET参数

问题描述

我想使用Curb（curb.rubyforge.org）来调用一个需要在get请求中提供参数的RESTful API。

I'm trying to use Curb (curb.rubyforge.org) to call a RESTful API that needs parameters supplied in a get request.

我想抓取像 http://foo.com/bar.xml?bla=blablabla 的网址。我想要能够做像

I want to fetch a URL like http://foo.com/bar.xml?bla=blablabla. I'd like to be able to do something like

Curl::Easy.perform("http://foo.com/bar.xml", :bla => 'blablabla') {|curl|
    curl.set_some_headers_if_necessary
}

但到目前为止，看到这样做是通过手动包括？bla = blablabla 在URL和自己做编码。当然有一个正确的方法来做到这一点，但我不能弄清楚阅读文档。

but so far, the only way I can see to do this is by manually including the ?bla=blablabla in the URL and doing the encoding myself. Surely there is a right way to do this, but I can't figure it out reading the documentation.

推荐答案

使用ActiveSupport'〜> 3.0'，有一个简单的解决方法 - to_query 方法，将hash转换为可以在URL中使用的查询字符串。

If you don't mind using ActiveSupport '~> 3.0', there's an easy workaround - to_query method, which converts hash to query string ready to be used in URL.

# active_support cherry-pick
require 'active_support/core_ext/object/to_query'

params = { :bla => 'blablabla' }

Curl::Easy.perform("http://foo.com/bar.xml?" + params.to_query) {|curl|
    curl.set_some_headers_if_necessary
}

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