Dexterity and Audio

Well we've started using dexterity on some sites.  We've created a nice little HTML5 wrapper for uploaded mp4 audio files.  Doing so required really two things, a file field and a transcription field.  We ran into a weird issue though. On upload of items when you check create object title from file name you get this:

 

Traceback (innermost last):

• Module ZPublisher.Publish, line 126, in publish
• Module ZPublisher.mapply, line 77, in mapply
• Module ZPublisher.Publish, line 46, in call_object
• Module plone.z3cform.layout, line 70, in __call__
• Module plone.z3cform.layout, line 54, in update
• Module plone.z3cform.fieldsets.extensible, line 59, in update
• Module plone.z3cform.patch, line 30, in GroupForm_update
• Module z3c.form.group, line 138, in update
• Module z3c.form.action, line 99, in execute
• Module z3c.form.button, line 315, in __call__
• Module z3c.form.button, line 170, in __call__
• Module plone.dexterity.browser.add, line 96, in handleAdd
• Module z3c.form.form, line 247, in createAndAdd
• Module plone.dexterity.browser.add, line 75, in add
• Module plone.dexterity.utils, line 142, in addContentToContainer
• Module plone.app.content.namechooser, line 34, in chooseName
• Module zope.component.hooks, line 104, in adapter_hook
• Module plone.app.dexterity.behaviors.filename, line 16, in __new__
• Module zope.component.hooks, line 104, in adapter_hook
• Module plone.dexterity.primary, line 24, in __init__

TypeError: ('Could not adapt', <Item at >, <InterfaceClass plone.rfc822.interfaces.IPrimaryFieldInfo>)

 

I couldn't find anything online about this so here we document the quick fix...

 

Fix this by:

1. go to ZMI portal_types
2. modify model source here to add in xmlns:marshal="http://namespaces.plone.org/supermodel/marshal"
3. add marshal:primary="true" to namedfile that should be the name of file

 

Save it.. restart your clients and you should be good to go.

 

BTW our Behaviours has:

plone.app.dexterity.behaviors.exclfromnav.IExcludeFromNavigation
plone.app.versioningbehavior.behaviors.IVersionable
plone.app.dexterity.behaviors.filename.INameFromFileName
plone.app.dexterity.behaviors.metadata.IDublinCore
plone.app.relationfield.behavior.IRelatedItems
collective.dexteritytextindexer.behavior.IDexterityTextIndexer
plone.app.referenceablebehavior.referenceable.IReferenceable
plone.app.dexterity.behaviors.related.IRelatedItems

 

WIth a model of:

<model xmlns="http://namespaces.plone.org/supermodel/schema"
xmlns:marshal="http://namespaces.plone.org/supermodel/marshal">
 <schema>
 <field marshal:primary="true" name="file" type="plone.namedfile.field.NamedFile" >
 <description />
 <title>File</title>
 </field>
 <field name="transcription" type="plone.app.textfield.RichText">
 <description>This field is for the transcription text of the media.</description>
 <required>False</required>
 <title>Transcription</title>
 </field>
 </schema>
</model>