Elvuel

上周群里有朋友在rails应用中需调用某api，不过接口非restful风格的，如要成功实现调用可以自行编写模块或引用第三方库，不过既然是在rails下，也可以拿AtciveResource来改动一下。

以下代码是个人做的一些小变更扩展来适应其api接口的调用－－以下代码纯属实践娱乐，贴出来备忘。

# File config/initializers/active_resource_ext.rb

module ActiveResource

  module Formats
    module NoneFormat
      extend self

      def extension
        ""
      end

      def mime_type
        ""
      end

      def encode(hash, options = nil)
        # 具体处理看实际需要
        #ActiveSupport::JSON.encode(hash, options)
        ""
      end

      # to Base.instantiate_collection
      def decode(json)
        # 具体处理看实际需要
        json
      end
    end
  end
  ＃ ActiveResource::Base
  class Base
    
    class << self
      def element_path(id, prefix_options = {}, query_options = nil)
          prefix_options, query_options = split_options(prefix_options) if query_options.nil?
          if format.extension == ""
          "#{prefix(prefix_options)}#{collection_name}/#{URI.escape id.to_s}#{query_string(query_options)}"
          else
            "#{prefix(prefix_options)}#{collection_name}/#{URI.escape id.to_s}.#{format.extension}#{query_string(query_options)}"
          end
      end

      def new_element_path(prefix_options = {})
        if format.extension == ""
          "#{prefix(prefix_options)}#{collection_name}/new"
        else
          "#{prefix(prefix_options)}#{collection_name}/new.#{format.extension}"
        end
      end
  
      def collection_path(prefix_options = {}, query_options = nil)
        prefix_options, query_options = split_options(prefix_options) if query_options.nil?
        if format.extension == ""
          "#{prefix(prefix_options)}#{collection_name}#{query_string(query_options)}"
        else
          "#{prefix(prefix_options)}#{collection_name}.#{format.extension}#{query_string(query_options)}"
        end
      end

      def instantiate_collection(collection, prefix_options = {})
        if collection.is_a? Array
          collection.collect! { |record| instantiate_record(record, prefix_options) }
        else
          collection.to_s
        end
      end
    end
  end
  
  # ActiveResource::Connection
  class Connection
  private
    def build_request_headers(headers, http_method, uri)
      if format.mime_type == ""
        authorization_header(http_method, uri).update(default_header).update(headers)
      else
        authorization_header(http_method, uri).update(default_header).update(http_format_header(http_method)).update(headers)
      end
    end
  end
end