ruby - NoMethodError : undefined method `split' for # 法拉第

Question

我想使用 Faraday 发送一个带有 JSON 正文(用于搜索)的获取请求，但我收到了上述错误。我认为 Proc 中的 self 把事情搞砸了，但这与它无关。我正在关注 [faraday github 页面][1] 上的文档，但一直卡在这个问题上。

def perform_query
  response = self.database.connection.get do |request|
    request.url self.path
    request.headers['Content-Type'] = 'application/json'
    request.body(self.to_json)
  end
end

def terms_to_json
  terms_array = self.terms.keys.inject([]) do |terms_array, field|
    value = self.terms[field]
    terms_array.tap do |ary|
      if value
        ary << "\"#{field}\": \"#{value}\""
      end 
    end
  end

  "{ #{terms_array.join ','} }"
end

def to_json
  "{ \"queryb\" : #{self.terms_to_json} }"
end

这是堆栈跟踪，错误出现在 #perform_query 中的 get Proc 中的某处:

from /Users/chrismaddox/.rvm/gems/ruby-1.9.3-p125/gems/faraday-0.8.1/lib/faraday/request.rb:60:in `url'
    from /Users/chrismaddox/.rvm/gems/ruby-1.9.3-p125/gems/faraday-0.8.1/lib/faraday/connection.rb:219:in `block in run_request'
    from /Users/chrismaddox/.rvm/gems/ruby-1.9.3-p125/gems/faraday-0.8.1/lib/faraday/connection.rb:237:in `block in build_request'
    from /Users/chrismaddox/.rvm/gems/ruby-1.9.3-p125/gems/faraday-0.8.1/lib/faraday/request.rb:35:in `block in create'
    from /Users/chrismaddox/.rvm/gems/ruby-1.9.3-p125/gems/faraday-0.8.1/lib/faraday/request.rb:34:in `tap'
    from /Users/chrismaddox/.rvm/gems/ruby-1.9.3-p125/gems/faraday-0.8.1/lib/faraday/request.rb:34:in `create'
    from /Users/chrismaddox/.rvm/gems/ruby-1.9.3-p125/gems/faraday-0.8.1/lib/faraday/connection.rb:233:in `build_request'
    from /Users/chrismaddox/.rvm/gems/ruby-1.9.3-p125/gems/faraday-0.8.1/lib/faraday/connection.rb:218:in `run_request'
    from /Users/chrismaddox/.rvm/gems/ruby-1.9.3-p125/gems/faraday-0.8.1/lib/faraday/connection.rb:87:in `get'
    from /Users/chrismaddox/Dropbox/LivingSocial/Hungry Academy/Projects/hackchat/search_ruby/elastic.rb:83:in `method_missing'
    from /Users/chrismaddox/Dropbox/LivingSocial/Hungry Academy/Projects/hackchat/search_ruby/elastic.rb:112:in `perform_query'
    from /Users/chrismaddox/Dropbox/LivingSocial/Hungry Academy/Projects/hackchat/search_ruby/elastic.rb:61:in `send_query'

更新:

path 方法返回搜索给定索引的路径字符串。例如 /wombats/animals/_search

Elastic::Database#path 调用 Elastic::Index#index_path:

module Elastic
  ELASTIC_URL = "http://localhost:9200"


  class Index
    attr_reader :index_name, :type_name, :last

    def initialize(type)
      @index_name = "#{type}-index"
      @type_name = type
      @last = 0
      add_to_elastic
    end

    def add_to_elastic
      index_url = URI.parse "#{ELASTIC_URL}#{index_path}/"
      Connection.new(index_url).put()
    end

    def index_path
      "/#{self.index_name}"
    end

    def search_path
      "#{type_path}/_search/"
    end

    def type_path
      "#{self.index_path}/#{type_name}/"
    end

  end
end

Answer 1

调用 search_path = "#{type_path}/_search/"调用 type_path = "#{self.index_path}/#{type_name}/"调用 index_path = "/#{self.index_name}"

因此，如果索引名称是 wombat 且类型名称是 animal，则 search_path 的计算结果为 /wombat/animal//_search

原来这不是显示错误的问题，而是法拉第的方法不一致导致的。 Faraday::Request#url 和 Faraday::Request#headers 本身是 setter 方法，而 Faraday::Request#body= 是 setter body 的方法。