Existing repository objects throw namespace errors

Given an existing object created by MIRA that lacks the new namespace definitions, the system may throw an error as follows:

a = TuftsImage.first
puts a.datastreams['DCA-ADMIN'].content

<dca_admin:admin xmlns:admin="http://nils.lib.tufts.edu/admin/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dca_admin="http://nils.lib.tufts.edu/dca_admin/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xlink="http://www.w3.org/TR/xlink">
  <admin:status>current</admin:status>
  <admin:accessPoint>Tufts Digital Library</admin:accessPoint>
  <admin:los>Archival/Public</admin:los>
  <admin:responsibleParty>Digital Collections and Archives</admin:responsibleParty>
  <admin:contact>n/a</admin:contact>
  <admin:transferDate>2005-09-30</admin:transferDate>
  <admin:accessionDate>null</admin:accessionDate>
  <admin:provenance>Images from the Edwin Rollins Collection (MS054).</admin:provenance>
  <admin:subAgreement>n/a</admin:subAgreement>
  <admin:disposition>archival</admin:disposition>
  <admin:bdefSubscriptions>bdef:AssetDef, bdef:TuftsAccess, bdef:TuftsAccessRights, bdef:TuftsArchival, bdef:TuftsImage, bdef:TuftsMetadata, bdef:TuftsReference, bdef:TuftsType</admin:bdefSubscriptions>
  <admin:accessRights>This image is freely available for research or educational use. Use of the image for publication or redistribution is prohibited except by permission of the Digital Collections and Archives, Tufts University</admin:accessRights>
  <admin:notes>On Wed May 20 16:40:06 2009 GMT-5, this file was modified to transform URNs from the Tufts naming service to point to CNRI Handles. Old URN: </admin:notes>
  <admin:checksum>null</admin:checksum>
</dca_admin:admin>

a.displays = a.displays + ['tdil']

ArgumentError: Namespace local has not been defined
    from /Users/mark/.rvm/gems/ruby-2.1.1@tdil/gems/om-3.0.7/lib/om/xml/term_value_operators.rb:170:in `eval'
    from (eval):1:in `block (2 levels) in insert_from_template'
    from /Users/mark/.rvm/gems/ruby-2.1.1@tdil/gems/om-3.0.7/lib/om/xml/term_value_operators.rb:170:in `eval'
...

curationexperts / tufts_models

Existing repository objects throw namespace errors #1