WashOut

WashOut is a gem that greatly simplifies creation of SOAP service providers.

But if you have a chance, please http://stopsoap.com/.

Compatibility

Rails >3.0 only.

WashOut should work like a charm on CRuby 1.9.x.

We do support CRuby 1.8.7. However it is not a goal and it is not well supported by our specs. According to this fact it maybe sometimes broken from the start on major releases. You are welcome to hold on an old version and give us enough issues and pull-requests to make it work.

All dependencies are JRuby-compatible so again it will work well in --1.9 mode but it can fail with fresh releases if you go --1.8.

Installation

In your Gemfile, add this line:

gem 'wash_out'

Usage

A SOAP endpoint in WashOut is simply a Rails controller which includes the module WashOut::SOAP. Each SOAP action corresponds to a certain controller method; this mapping, as well as the argument definition, is defined by soap_action method. Check the method documentation for complete info; here, only a few examples will be demonstrated.

# app/controllers/rumbas_controller.rb
class RumbasController < ApplicationController
  include WashOut::SOAP

  # Simple case
  soap_action "integer_to_string",
              :args   => :integer,
              :return => :string
  def integer_to_string
    render :soap => params[:value].to_s
  end

  soap_action "concat",
              :args   => { :a => :string, :b => :string },
              :return => :string
  def concat
    render :soap => (params[:a] + params[:b])
  end

  # Complex structures
  soap_action "AddCircle",
              :args   => { :circle => { :center => { :x => :integer,
                                                     :y => :integer },
                                        :radius => :double } },
              :return => nil, # [] for wash_out below 0.3.0
              :to     => :add_circle
  def add_circle
    circle = params[:circle]

    raise SOAPError, "radius is too small" if circle[:radius] < 3.0

    Circle.new(circle[:center][:x], circle[:center][:y], circle[:radius])

    render :soap => nil
  end

  # Arrays
  soap_action "integers_to_boolean",
              :args => { :data => [:integer] },
              :return => [:boolean]
  def integers_to_boolean
    render :soap => params[:data].map{|x| x ? 1 : 0}
  end

  # You can use all Rails features like filtering, too. A SOAP controller
  # is just like a normal controller with a special routing.
  before_filter :dump_parameters
  def dump_parameters
    Rails.logger.debug params.inspect
  end
end

# config/routes.rb
WashOutSample::Application.routes.draw do
  wash_out :rumbas
end

In such a setup, the generated WSDL may be queried at path /api/wsdl. So, with a gem like Savon, a request can be done using this path:

require 'savon'

client = Savon::Client.new("http://localhost:3000/rumbas/wsdl")

client.wsdl.soap_actions # => [:integer_to_string, :concat, :add_circle]

result = client.request(:concat) do
  soap.body = { :a => "123", :b => "abc" }
end

# actual wash_out
result.to_hash # => {:concat_reponse => {:value=>"123abc"}}

# wash_out below 0.3.0 (and this is malformed response so please update)
result.to_hash # => {:value=>"123abc"}

Take a look at WashOut sample application.

Namespace

Use config.action_view.washout_namespace = .. inside your environment configuration to modify SOAP namespace. The default value is: urn:WashOut.

License