How to add attributes all the to XMLElements in Spyne Array - arrays

Question

I am using spyne Array to transform a JSON list and I need to add the "id" attribute to the "referral" parent node in the final XML.
This is the final XML I am expecting:
<viewOutboundResponse user="rayners">
<referral id="123">
<status>SUBMITTED</status>
<from>
<outlet id="12345">ABC</outlet>
</from>
<to>
<outlet id="6789">XYZ</outlet>
</to>
<date>2015-01-14</date>
<client>Bloggs</client>
<daysToExpiry>3</daysToExpiry>
</referral>
<referral id="456">
<status>REJECTED</status>
<from>
<outlet id="101112">DEF</outlet>
</from>
<to>
<outlet id="131415">S2X Demo</outlet>
</to>
<date>2004-01-15</date>
<client>Gobbs</client>
<daysToExpiry>7</daysToExpiry>
</referral>
</viewOutboundResponse>
Here is my code:
class ReferralSummaryType(ComplexModel):
__type_name__ = 'referral'
type_info = {'id': XmlAttribute(Integer),
'status': Unicode,
'from': ReferralFromType,
'to': ReferralToType,
'date': Date,
'client': Unicode,
'daysToExpiry': Integer}
class OutboundResponseType(ComplexModel):
__mixin__ = True
referral = Array(ReferralSummaryType)
But the output I am getting is:
<viewOutboundResponse user="rayners">
<referral>
<referral id="123">
<status>SUBMITTED</status>
<from>
<outlet id="12345">ABC</outlet>
</from>
<to>
<outlet id="6789">XYZ</outlet>
</to>
<date>2015-01-14</date>
<client>Bloggs</client>
<daysToExpiry>3</daysToExpiry>
</referral>
<referral id="456">
<status>REJECTED</status>
<from>
<outlet id="101112">DEF</outlet>
</from>
<to>
<outlet id="131415">S2X Demo</outlet>
</to>
<date>2004-01-15</date>
<client>Gobbs</client>
<daysToExpiry>7</daysToExpiry>
</referral>
</referral>
</viewOutboundResponse>

Answer 1

So your question says
I need to add the "id" attribute to the "referral" parent node in the
final XML.
Your desired output has a sequence of referral nodes without a wrapping referral node and the result you are seeing is a sequence of embedded referral nodes (each with the id attribute) but no ID on the wrapping node.
So there is a bit of a conflict there. If it is your need to have an ID in the wrapping referral node, then I think you might need to change your response and add a class for the wrapper type:
class ReferralWrapperType(ComplexModel):
__type_name__ = 'referral'
id = XMLAttribute(Integer)
referral = Array(ReferralSummaryType)
class OutboundResponseType(ComplexModel):
__mixin__ = True
referral = ReferralWrapperType
whereas if what you need is what is shown in what you say is the final XML that you are expecting then from the Spyne array documentation I am led to believe that you could perhaps try:
class OutboundResponseType(ComplexModel):
__mixin__ = True
referral = ReferralSummaryType.customize(max_occurs="unbounded")
Caveat - I'm very very very new to Spyne.
Edited to use max_occurs="unbounded" instead of max_occurs=float('inf') per this spyne bug.

Answer 2

According to the Spyne documentation (http://spyne.io/docs/2.10/manual/03_types.html#arrays), using
referral = ReferralSummaryType.customize(max_occurs="unbounded")
Resolved my issue.
Thanks!