通过消耗资源有效的API时使用的参数在URL中多个值 - 导轨 [英] Rails - Parameter with multiple values in the URL when consuming an API via Active Resource

问题描述

我的消费我希望做以下格式的请求的API：

I am consuming an API that expects me to do requests in the following format:

?filter=value1&filter=value2

不过，我使用Active资源，当我指定的：PARAMS 散，我做不出来的网址，我相信这是正确的两次出现相同的参数。所以，我不能做到这一点：

However, I am using Active Resource and when I specify the :params hash, I can't make the same parameter to appear twice in the URL, which I believe is correct. So I can't do this:

：PARAMS =＆GT; {：consumer_id =＆GT; self.id，：过滤器=＆GT; 值1：过滤器=＆GT; 值2} ，因为散列的第二个过滤器的索引将被忽略。

:params => {:consumer_id => self.id, :filter => "value1", :filter => "value2" }, because the second filter index of the hash will be ignored.

我知道我可以传递一个数组（我认为是这样做的正确的方式）是这样的：

I know I can pass an array (which I believe is the correct way of doing it) like this:

:params => {:consumer_id => self.id, :filter => ["value1","value2"] }

这将产生一个URL，如：

Which will produce a URL like:

?filter[]=value1&filter[]=value2

这对我来说似乎确定，但API不接受它。所以我的问题是：

Which to me seems ok, but the API is not accepting it. So my question are:

什么是传递参数具有多个值的正确方法？它是特定语言？谁决定的？

What is the correct way of passing parameters with multiple values? Is it language specific? Who decides this?

推荐答案

要创建一个有效的查询字符串，可以使用

to create a valid query string, you can use

PARAMS = {A：1，B：[1,2]}。to_query

http://apidock.com/rails/Hash/to_query 结果
http://apidock.com/rails/Hash/to_param

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