如何将PHP SoapClient请求示例转换为RoR？

Question

I'd like to use some web service via its API. In documentation I found an example request written with PHP SoapClient. But I am using RoR and I have no PHP experience. Could someone tell me how should I write the same in RoR, or at least translate it to plain HTTP terminology?

<?php
  $soap = new SoapClient(“https://secure.przelewy24.pl/external/wsdl/service.php?wsdl”);
  $test = $soap->TestAccess(“9999”, “anuniquekeyretrievedfromprzelewy24”);
  if ($test)
    echo ‘Access granted’;
  else
    echo ‘Access denied’;
?> 

Edit: particularly I'd like to know what should I do with TestAccess method, because there's no methods in plain HTTP. Should I join this name with URL?

Answer 1

To make your life easier, check out a gem that allows you to simplify SOAP access, like savon.

Then the code could be translated as

# create a client for the service
client = Savon.client(wsdl: 'https://secure.przelewy24.pl/external/wsdl/service.php?wsdl')

This will automatically parse the possible methods to client that are offered in the SOAP API (defined in the WSDL). To list the possible operations, type

client.operations

In your case this will list

[:test_access, :trn_refund, :trn_by_session_id, :trn_full_by_session_id, :trn_list_by_date, :trn_list_by_batch, :trn_full_by_batch, :payment_methods, :currency_exchange, :refund_by_id, :trn_register, :trn_internal_register, :check_nip, :company_register, :company_update, :batch_list, :trn_dispatch, :charge_back, :trn_check_funds, :check_merchant_funds, :transfer_merchant_funds, :verify_transaction, :register_transaction, :deny_transaction, :batch_details]

Then to call the method, do the following

response = client.call(:test_access, message: { test_access_in: 9999 })
response = client.call(:test_access, message: { 
   test_access_in: 9999 }
   test_access_out: "anuniquekeyretrievedfromprzelewy24" 
)
response.body
 => {:test_access_response=>{:return=>false}}

this gets a result, but I have no idea what it means.

Answer 2

I've included an entire controller method that we use in production as an example but essentially you want to pass in your xml/wsdl request as the body of the HTTP request and then parse the response as xml, or what we used below which is rexml for easier traversing of the returned doc.

def get_chrome_styles
  require 'net/http'
  require 'net/https'
  require 'rexml/document'
  require 'rexml/formatters/pretty'

  xml = '<?xml version="1.0" encoding="UTF-8"?>
      <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:urn="urn:description7b.services.chrome.com">
        <soapenv:Header/>
        <soapenv:Body>
           <urn:StylesRequest modelId="' + params[:model_id] + '">
              <urn:accountInfo number="[redacted]" secret="[redacted]" country="US" language="en" behalfOf="trace"/>
              <!--Optional:-->
           </urn:StylesRequest>
        </soapenv:Body>
      </soapenv:Envelope>'


  base_url = 'http://services.chromedata.com/Description/7b?wsdl'
  uri = URI.parse( base_url )
  http = Net::HTTP.new(uri.host, uri.port)

  request = Net::HTTP::Post.new("/Description/7b?wsdl")
  request.add_field('Content-Type', 'text/xml; charset=utf-8')
  request.body = xml
  response = http.request( request )

  doc  = REXML::Document.new(response.body)

  options = []
  doc.get_elements('//style').each do |division|
    puts division
    options << { :id => division.attributes['id'], :val => division.text }
  end

  respond_to do |format|
    format.json { render :json => options.to_json }
  end
end