Class: Spektrix::ResponseParser

Inherits:
Faraday::Response::Middleware
  • Object
show all
Defined in:
lib/spektrix/response_parser.rb

Overview

A custom response parser to handle the XML format returned by Spektrix. We clean up the XML to remove namespaces, then get the collection itself. The XML includes an attribute called ‘attribute’ which explodes Ruby, so we reassign this to ‘custom_attributes’, and clean up the key/value pairs so the attribute name is the key and the value is the value.

Instance Method Summary collapse

Instance Method Details

#on_complete(env) ⇒ Object 



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# File 'lib/spektrix/response_parser.rb', line 5

def on_complete(env)

  # Parse the XML
  doc = Nokogiri::XML(env[:body])
  doc.remove_namespaces!

  # Hash has DeepSymbolizable mixed in, which goes through the hash fixing up the CamelCase.
  data = Hash.from_xml(doc.to_s).deep_symbolize {|k| k.underscore.to_sym}

  begin
    # Get the array inside the XML. TODO: this is a bit hacky. Should use xpath.
    data = data.values.first.values.flatten
  rescue
    # Rescue with an empty array, for now.
    data = []
  end

  # Traverse the array, fixing up any attributes called 'attribute'
  data.each do |item|
    item[:custom_attributes] = {}
    if item.has_key?(:attribute)
      item[:attribute].each do |attribute_pair|
        next unless attribute_pair.is_a?(Hash)
        key = attribute_pair.values.first.underscore.downcase.parameterize("_").to_sym
        value = attribute_pair.values.last
        value = false if value == "0"
        value = true if value == "1"
        item[:custom_attributes][key] = value
      end

      #Remove the 'attribute' attribute because, y'know.
      item.delete(:attribute)
    end
  end

  # Set up the hash as Her expects.
  env[:body] = {
    data: data
  }
end