Passing Array Elements for Savon 2 (SOAP) - ruby

Question

I'm trying to write code in Ruby with the Savon gem (v2) that fetches account information from a SOAP api, but I'm having an issue with passing an Array.
CampaignIds is supposed to be an array of integers.
Here is my code:
client = Savon.client(wsdl: "https://api7secure.publicaster.com/Pub7APIV1/Campaign.svc?singleWsdl")
message = {
"EncryptedAccountID" => api_key,
"APIPassword" => api_password,
"CampaignIds" => [3,4],
"StartDate" => yesterday,
"EndDate" => yesterday,
"IncludeTests" => false
}
client.call(:get_comparative_report_details_data, message: message)
which produces the following request:
<?xml version="1.0" encoding="UTF-8"?>
<env:Envelope xmlns:env="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ins0="http://schemas.microsoft.com/2003/10/Serialization/Arrays" xmlns:tns="http://BlueSkyFactory.Publicaster7.Public.API" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<env:Body>
<tns:GetComparativeReportDetailsData>
<tns:EncryptedAccountID>*****</tns:EncryptedAccountID>
<tns:APIPassword>*****</tns:APIPassword>
<tns:CampaignIds>3</tns:CampaignIds>
<tns:CampaignIds>4</tns:CampaignIds>
<tns:StartDate>2014-01-06</tns:StartDate>
<tns:EndDate>2014-01-06</tns:EndDate>
<tns:IncludeTests>false</tns:IncludeTests>
</tns:GetComparativeReportDetailsData>
</env:Body>
</env:Envelope>
whereas, if I play around in SOUP UI, the request should look like:
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:blu="http://BlueSkyFactory.Publicaster7.Public.API" xmlns:arr="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
<soapenv:Header/>
<soapenv:Body>
<blu:GetComparativeReportData>
<blu:EncryptedAccountID>*****</blu:EncryptedAccountID>
<blu:APIPassword>*****</blu:APIPassword>
<blu:CampaignIds>
<arr:int>3</arr:int>
<arr:int>4</arr:int>
</blu:CampaignIds>
<blu:StartDate>2014-01-06T16:21:47-05:00</blu:StartDate>
<blu:EndDate>2014-01-07T16:21:47-05:00</blu:EndDate>
<blu:IncludeTests>false</blu:IncludeTests>
</blu:GetComparativeReportData>
</soapenv:Body>
</soapenv:Envelope>
Any Ideas?

Answer 1

You can try this syntax :
message = {
...
"CampaignIds" => {"int" => [3,4]},
...
}
That'll produce this output :
<CampaignIds>
<int>3</int>
<int>4</int>
</CampaignIds>
Hope this helps.

Answer 2

I just experienced the same issue and found a solution, that's not dependent on having a permissive SOAP endpoint. You can configure this behavior as a global using the unwrap key. This key is given as an option to Gyoku which generates the XML for Savon.
client = Savon.client(wsdl: 'https://example.com/wsdl', unwrap: true)
client.call(:cook_meal, message: { 'Ingredients' => ['tomato', 'basil', 'mozzarella'] })
Although the issue is old, better late than never.