Issues Formatting a SOAP API with Savon gem - ruby-on-rails

Question

I was terrified this day would come.. dealing with SOAP API's...
This is a whole new realm for me, Ive done some digging with the SAVON gem but i cant seem to structure my call..
Essentially what I am trying to do is the following:
Step 1: Call the API to retrieve the LatestCallerVersion (API Version)
Step 2: Take the LatestCallerVersion and send a second request to the validation API to see if my customers are in a valid service area.
This is what I've come up with (but it crashes and burns hard)
caller_client = Savon.client(
wsdl: 'https://alarmadmin.alarm.com/webservices/CustomerManagement.asmx?WSDL '\
)
caller_response = caller_client.call(
:authentication,
message: {
user: 'xxxxxx',
password: 'xxxxxx',
two_factor_device_id: 'xxxxxx'
},
:body,
message: {
:get_latest_caller_version
}
)
Here is the SOAP request & response Doc for the GetLatestCaller call
POST /webservices/CustomerManagement.asmx HTTP/1.1
Host: alarmadmin.alarm.com
Content-Type: application/soap+xml; charset=utf-8
Content-Length: length
<?xml version="1.0" encoding="utf-8"?>
<soap12:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://www.w3.org/2003/05/soap-envelope">
<soap12:Header>
<Authentication xmlns="http://www.alarm.com/WebServices">
<User>string</User>
<Password>string</Password>
<TwoFactorDeviceId>string</TwoFactorDeviceId>
</Authentication>
</soap12:Header>
<soap12:Body>
<GetLatestCallerVersion xmlns="http://www.alarm.com/WebServices" />
</soap12:Body>
</soap12:Envelope>
HTTP/1.1 200 OK
Content-Type: application/soap+xml; charset=utf-8
Content-Length: length
<?xml version="1.0" encoding="utf-8"?>
<soap12:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://www.w3.org/2003/05/soap-envelope">
<soap12:Body>
<GetLatestCallerVersionResponse xmlns="http://www.alarm.com/WebServices">
<GetLatestCallerVersionResult>int</GetLatestCallerVersionResult>
</GetLatestCallerVersionResponse>
</soap12:Body>
</soap12:Envelope>
Here is the CheckCaller_V2 request & Response
POST /webservices/Validate.asmx HTTP/1.1
Host: alarmadmin.alarm.com
Content-Type: application/soap+xml; charset=utf-8
Content-Length: length
<?xml version="1.0" encoding="utf-8"?>
<soap12:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://www.w3.org/2003/05/soap-envelope">
<soap12:Header>
<Authentication xmlns="http://www.alarm.com/WebServices">
<User>string</User>
<Password>string</Password>
<TwoFactorDeviceId>string</TwoFactorDeviceId>
</Authentication>
</soap12:Header>
<soap12:Body>
<CheckCoverage_v2 xmlns="http://www.alarm.com/WebServices">
<input>
<Address>
<Street1>string</Street1>
<Street2>string</Street2>
<SubCity>string</SubCity>
<City>string</City>
<SubState>string</SubState>
<State>string</State>
<Zip>string</Zip>
<CountryId>Canada</CountryId>
</Address>
<Network>Gsm</Network>
<Generation>FourG</Generation>
<CallerVersion>returned from GetLatestCaller call</CallerVersion>
</input>
</CheckCoverage_v2>
</soap12:Body>
</soap12:Envelope>
HTTP/1.1 200 OK
Content-Type: application/soap+xml; charset=utf-8
Content-Length: length
<?xml version="1.0" encoding="utf-8"?>
<soap12:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://www.w3.org/2003/05/soap-envelope">
<soap12:Body>
<CheckCoverage_v2Response xmlns="http://www.alarm.com/WebServices">
<CheckCoverage_v2Result>NotChecked or FullCoverage or MostlyCovered or NoCoverage or Error or BadZip or PartialCoverage or NotSupported or NotOffered</CheckCoverage_v2Result>
</CheckCoverage_v2Response>
</soap12:Body>
</soap12:Envelope>
I am brand new to SOAP Any assistance here would be greatly appreciated. Please let me know if anything further is needed.

Answer 1

kindly use SOAP UI to check for the Request definition. On loading the the WSDL file in SOAP UI, I am able to get the following.
After that it becomes relatively easy to follow along. It seems all the operations has the same header, so I will go and create a client that looks like
caller_client = Savon.client(
wsdl: 'https://alarmadmin.alarm.com/webservices/CustomerManagement.asmx?WSDL',
env_namespace: :soapenv,
namespace_identifier: :web,
soap_header: {
'web:Authentication': {
'web:User': 'xxxx',
'web:Password': 'xxxxx',
'web:TwoFactorDeviceId': 'xxx'
}
})
And after that calling the individual operation becomes
caller_client.call(:get_latest_caller_version)
If you want to list all the possible operations, you can use
caller_client.operations
If you want to pass message to individual operation, use the following format
caller_client.call(:get_modem_serial_from_iccid, message: { iccid: 'xxxx' })