在法拉第传递url params数组

时间:2013-09-09 19:50:07

标签: ruby arrays faraday

我是Faraday的新手,并试图学习如何为url params传递一个数组。我的代码如下所示:

require 'faraday'

conn = Faraday.new(:url => 'http://foo.com:8888') do |faraday|
  faraday.request :url_encoded
  faraday.response :logger
  faraday.adapter Faraday.default_adapter
end

response = conn.get '/api/endpoint', { :bar => ['baz', 'qux'] }
response.body    

当我调试时,我发现URL被编码为:

INFO -- : get http://foo.com:8888/api/endpoint?bar[]=baz&bar[]=qux

而不是http://foo.com:8888/api/endpoint?bar=baz&bar=qux。当我传递一系列参数时,如何在没有[]的情况下对法拉日进行编码?

2 个答案:

答案 0 :(得分:2)

我明白为什么现在正在发生这种情况。

此问题实际上已在法拉第版本0.9+上修复,但这只能作为RC使用。

所以有两个选择: 将代码更改为这样(猴子补丁,取自Ruby's Faraday - include the same param multiple times

require 'faraday'

module Faraday
  module Utils
    def build_nested_query(value, prefix = nil)
      case value
      when Array
        value.map { |v| build_nested_query(v, "#{prefix}") }.join("&")
      when Hash
        value.map { |k, v|
          build_nested_query(v, prefix ? "#{prefix}%5B#{escape(k)}%5D" : escape(k))
        }.join("&")
      when NilClass
        prefix
      else
        raise ArgumentError, "value must be a Hash" if prefix.nil?
        "#{prefix}=#{escape(value)}"
      end
    end
  end
end

conn = Faraday.new(:url => 'http://foo.com:8888') do |faraday|
  faraday.request :url_encoded
  faraday.response :logger
  faraday.adapter Faraday.default_adapter
end

response = conn.get '/api/endpoint', { :bar => ['baz', 'qux'] }
response.body 

或者使用faraday的预发布0.9版本

gem install faraday --pre

并将其添加到您的代码中:

faraday.params_encoder = Faraday::FlatParamsEncoder

这会阻止它添加[]符号。

答案 1 :(得分:1)

我不能发表评论所以我会这样说:上面的答案对我有用,而且我已经投了赞成票,但这是我的具体例子(我不得不将调用移到FlatParamsEncoder,我用错了方法最初:

#Gemfile
gem 'faraday', '~> 0.9.0.rc5'

#lib/api_wrapper/faraday_adapter.rb
def patch
  connection.patch do |req|
    req.options.params_encoder = Faraday::FlatParamsEncoder
    req.headers['Content-Type'] = 'application/json'
    req.url "/api/v1/#{end_point}", @request.params
  end
end

def connection
  faraday_client = Faraday.new(:url => base_url) do |faraday|
    faraday.response :logger if Rails.env.development?
    faraday.adapter Faraday.default_adapter # make requests with Net::HTTP
  end
  faraday_client.basic_auth(username, password)
  faraday_client
end