Re: Plone 4.2->4.3.4 PicklingError saving Dexterity content with relationship

I've been doing some digging and I think the problem may be down to the 
version of plone.directives.form in my existing 4.2 Plone site - see:

http://stackoverflow.com/questions/20290361/how-to-clean-up-old-interfaces-on-zc-relation-catalog

If anyone can offer any further insight or suggest a correct path to 
resolve my problem then I'd welcome your input.

Simon



On 23/01/2015 10:39, Simon Richardson wrote:
> Hi Plone Users
>
> 1) Using I recently created a new Plone 4.3.4 site and added some 
> existing custom Dexterity content types which were updated from my 4.2 
> build.  On this vanilla Plone 4.3.4 database these content types work 
> perfectly well.
>
> 2) I then replaced the Plone 4.3.4 var directory with one from my 4.2 
> site.  I started the new Plone 4.3.4 site and ran the upgrade routine 
> (as prompted in the overview control panel).  Again everything seemed 
> fine.  However, i do have a major issue with Dexterity content types 
> on this environment .... which causes me to question my upgrade approach.
>
> On my new 4.3.4 site (#2 above) I am able to create and edit my 
> Dexterity content items provided they don't have a relationship field 
> populated.  Even if it has a relationship field defined provided i 
> don't populate it then it saves without error.  The minute I try to 
> assign a relationship to the content I get a PicklingError as shown 
> below.  I've also included the source for my Dexterity class which has 
> the relationship (created using zopeskel) and my pinned versions.
>
> One post 
> <https://github.com/innocenceproject/collective.salesforce.fundraising/issues/63> 
> I read chose to included plone.app.kss in their build as a workaround, 
> but because I am of the opinion that the Plone 4.3 team had an 
> objective to remove the kss dependency I am reluctant to introduce it.
>
> I do question my 'upgrade approach' - is this the right way to do it?
>
> Any ideas what might be causing the PicklingError or how to fix it?
>
>
> Simon
>
> 2015-01-22 19:43:47 WARNING OFS.Uninstalled Could not import class 
> 'IPortalObject' from module 'plone.app.kss.interfaces'
> 2015-01-22 19:43:47 WARNING OFS.Uninstalled Could not import class 
> 'Schema' from module 'plone.directives.form.schema'
> 2015-01-22 19:43:48 ERROR Zope.SiteErrorLog 1421955828.30.904057612524 
> http://192.168.146.129:8080/Plone/myswimming-club/++add++myswimmingclub.content.swimmer
> Traceback (innermost last):
>   Module ZPublisher.Publish, line 146, in publish
>   Module Zope2.App.startup, line 301, in commit
>   Module transaction._manager, line 89, in commit
>   Module transaction._transaction, line 329, in commit
>   Module transaction._transaction, line 443, in _commitResources
>   Module ZODB.Connection, line 567, in commit
>   Module ZODB.Connection, line 623, in _commit
>   Module ZODB.Connection, line 658, in _store_objects
>   Module ZODB.serialize, line 422, in serialize
>   Module ZODB.serialize, line 431, in _dump
> PicklingError: Can't pickle <class 
> 'plone.app.kss.interfaces.IPortalObject'>: import of module 
> plone.app.kss.interfaces failed
> > 
> /home/plone/copsclub-plone4.3-dev/eggs/ZODB3-3.10.5-py2.7-linux-x86_64.egg/ZODB/serialize.py(431)_dump()
> -> self._p.dump(state)
> (Pdb) pp state
> ((<InterfaceClass OFS.interfaces.IOrderedContainer>,
>   (<BTrees.Length.Length object at 0x2b72e72745f0>,
>    <BTrees.IFBTree.IFTreeSet object at 0x2b72e7273050>),
>   <InterfaceClass AccessControl.interfaces.IOwned>,
>   (<BTrees.Length.Length object at 0x2b72e7274668>,
>    <BTrees.IFBTree.IFTreeSet object at 0x2b72e72730d0>),
>   <InterfaceClass AccessControl.interfaces.IPermissionMappingSupport>,
>   (<BTrees.Length.Length object at 0x2b72e72746e0>,
>    <BTrees.IFBTree.IFTreeSet object at 0x2b72e7273150>),
>   <InterfaceClass persistent.interfaces.IPersistent>,
>   (<BTrees.Length.Length object at 0x2b72e7274758>,
>    <BTrees.IFBTree.IFTreeSet object at 0x2b72e72731d0>),
>   <InterfaceClass App.interfaces.IPersistentExtra>,
>   (<BTrees.Length.Length object at 0x2b72e72747d0>,
>    <BTrees.IFBTree.IFTreeSet object at 0x2b72e7273250>),
>   <class 'plone.app.kss.interfaces.IPortalObject'>,
>   (<BTrees.Length.Length object at 0x2b72e7274848>,
>    <BTrees.IFBTree.IFTreeSet object at 0x2b72e7273350>),
>   <InterfaceClass zope.component.interfaces.IPossibleSite>,
>   (<BTrees.Length.Length object at 0x2b72e72748c0>,
>    <BTrees.IFBTree.IFTreeSet object at 0x2b72e72732d0>),
>   <InterfaceClass OFS.interfaces.IPropertyManager>,
>   (<BTrees.Length.Length object at 0x2b72e7274938>,
>    <BTrees.IFBTree.IFTreeSet object at 0x2b72e72733d0>),
>   <InterfaceClass zope.container.interfaces.IReadContainer>,
>   (<BTrees.Length.Length object at 0x2b72e72749b0>,
>    <BTrees.IFBTree.IFTreeSet object at 0x2b72e7273450>),
>   <InterfaceClass zope.interface.common.mapping.IReadMapping>,
>   (<BTrees.Length.Length object at 0x2b72e7274a28>,
>    <BTrees.IFBTree.IFTreeSet object at 0x2b72e72734d0>),
>   <InterfaceClass 
> plone.app.referenceablebehavior.referenceable.IReferenceable>,
>   (<BTrees.Length.Length object at 0x2b72e7274aa0>,
>    <BTrees.IFBTree.IFTreeSet object at 0x2b72e7273550>),
>   <InterfaceClass AccessControl.interfaces.IRoleManager>,
>   (<BTrees.Length.Length object at 0x2b72e7274b18>,
>    <BTrees.IFBTree.IFTreeSet object at 0x2b72e72735d0>),
>   <InterfaceClass plone.contentrules.engine.interfaces.IRuleAssignable>,
>   (<BTrees.Length.Length object at 0x2b72e7274b90>,
>    <BTrees.IFBTree.IFTreeSet object at 0x2b72e7273650>),
>   <InterfaceClass 
> Products.CMFDynamicViewFTI.interfaces.ISelectableBrowserDefault>,
>   (<BTrees.Length.Length object at 0x2b72e7274c08>,
>    <BTrees.IFBTree.IFTreeSet object at 0x2b72e72736d0>),
>   <InterfaceClass OFS.interfaces.ISimpleItem>,
>   (<BTrees.Length.Length object at 0x2b72e7274c80>,
>    <BTrees.IFBTree.IFTreeSet object at 0x2b72e7273750>),
>   <InterfaceClass zope.container.interfaces.ISimpleReadContainer>,
>   (<BTrees.Length.Length object at 0x2b72e7274cf8>,
>    <BTrees.IFBTree.IFTreeSet object at 0x2b72e72737d0>),
>   <SchemaClass myswimmingclub.content.swimmer.ISwimmer>,
>   (<BTrees.Length.Length object at 0x2b72e727bde8>,
>    <BTrees.IFBTree.IFTreeSet object at 0x2b72e726a250>),
>   <SchemaClass copsclub.content.swimmingmeet.ISwimmingMeet>,
>   (<BTrees.Length.Length object at 0x2b72e7274d70>,
>    <BTrees.IFBTree.IFTreeSet object at 0x2b72e7273850>),
>   <InterfaceClass OFS.interfaces.ITraversable>,
>   (<BTrees.Length.Length object at 0x2b72e7274de8>,
>    <BTrees.IFBTree.IFTreeSet object at 0x2b72e72738d0>),
>   <InterfaceClass plone.uuid.interfaces.IUUIDAware>,
>   (<BTrees.Length.Length object at 0x2b72e7274e60>,
>    <BTrees.IFBTree.IFTreeSet object at 0x2b72e7273950>),
>   <InterfaceClass App.interfaces.IUndoSupport>,
>   (<BTrees.Length.Length object at 0x2b72e7274ed8>,
>    <BTrees.IFBTree.IFTreeSet object at 0x2b72e72739d0>),
>   <InterfaceClass Products.CMFCore.interfaces._content.IWorkflowAware>,
>   (<BTrees.Length.Length object at 0x2b72e7274f50>,
>    <BTrees.IFBTree.IFTreeSet object at 0x2b72e7273a50>),
>   <InterfaceClass zope.container.interfaces.IWriteContainer>,
>   (<BTrees.Length.Length object at 0x2b72e726d050>,
>    <BTrees.IFBTree.IFTreeSet object at 0x2b72e7273ad0>),
>   <InterfaceClass webdav.interfaces.IWriteLock>,
>   (<BTrees.Length.Length object at 0x2b72e726d0c8>,
>    <BTrees.IFBTree.IFTreeSet object at 0x2b72e7273b50>),
>   <InterfaceClass OFS.interfaces.IZopeObject>,
>   (<BTrees.Length.Length object at 0x2b72e726d140>,
>    <BTrees.IFBTree.IFTreeSet object at 0x2b72e7273bd0>),
>   <InterfaceClass zope.interface.Interface>,
>   (<BTrees.Length.Length object at 0x2b72e726d1b8>,
>    <BTrees.IFBTree.IFTreeSet object at 0x2b72e7273c50>),
>   <class 'plone.directives.form.schema.Schema'>,
>   (<BTrees.Length.Length object at 0x2b72e726d230>,
>    <BTrees.IFBTree.IFTreeSet object at 0x2b72e7273ed0>),
>   <SchemaClass plone.supermodel.model.Schema>,
>   (<BTrees.Length.Length object at 0x2b72e726d2a8>,
>    <BTrees.IFBTree.IFTreeSet object at 0x2b72e726a1d0>)),)
>
> (Pdb) pp self
> <ZODB.serialize.ObjectWriter instance at 0x2b72e7138248>
> (Pdb) pp classmeta
> <type 'BTrees.OOBTree.OOBucket'>
> (Pdb)
>
> ============================
> = swimmer.py
> ============================
>
> from five import grok
>
> from z3c.form import group, field
> from zope import schema
> from zope.interface import invariant, Invalid
> from zope.schema.interfaces import IContextSourceBinder
> from zope.schema.vocabulary import SimpleVocabulary, SimpleTerm
>
> from plone.dexterity.content import Item
>
> from plone.directives import dexterity, form
> from plone.app.textfield import RichText
> from plone.namedfile.field import NamedImage, NamedFile
> from plone.namedfile.field import NamedBlobImage, NamedBlobFile
> from plone.namedfile.interfaces import IImageScaleTraversable
>
> from z3c.relationfield.schema import RelationList, RelationChoice
> from plone.formwidget.contenttree import ObjPathSourceBinder
>
>
> from myswimmingclub.content import MessageFactory as _
>
> # imports for the schema
> from plone.app.textfield import RichText
> from plone.supermodel import model
> from zope import schema
> from z3c.relationfield.schema import RelationChoice
> from plone.formwidget.contenttree import ObjPathSourceBinder
> from myswimmingclub.content.training_squad import ITrainingSquad
>
> # imports for the view
> from Acquisition import aq_inner
> from Products.CMFCore.utils import getToolByName
> from Products.Five import BrowserView
>
> # Interface class; used to define content-type schema.
>
> class ISwimmer(model.Schema):
>     """
>     A swimmer in the swimming club
>     """
>
>     title = schema.TextLine(
>         title = _(u"Membership Number"),
>     )
>
>     description = schema.Text(
>         title=_(u"Full Name"),
>     )
>
>     squad = RelationChoice(
>         title=_(u"Traning Squad"),
> source=ObjPathSourceBinder(object_provides=ITrainingSquad.__identifier__),
>         required=False,
>     )
>
>
> # Custom content-type class; objects created for this content type will
> # be instances of this class. Use this class to add content-type specific
> # methods and properties. Put methods that are mainly useful for rendering
> # in separate view classes.
>
> class Swimmer(Item):
>     grok.implements(ISwimmer)
>
>     # Add your class methods and properties here
>     pass
>
>
> # View class
> # The view will automatically use a similarly named template in
> # swimmer_templates.
> # Template filenames should be all lower case.
> # The view will render when you request a content object with this
> # interface with "/@@sampleview" appended.
> # You may make this the default view for content objects
> # of this type by uncommenting the grok.name line below or by
> # changing the view class name and template filename to View / view.pt.
>
> class SampleView(grok.View):
>     """ sample view class """
>
>     grok.context(ISwimmer)
>     grok.require('zope2.View')
>
>     # grok.name('view')
>
>     # Add view methods here
>
> class TrainingSquadView(BrowserView):
>     """ sample view class """
>
>     # grok.name('view')
>
>     # Add view methods here
>
>
> # =============================
> # Project-specific version pins
> # =============================
>
> [versions]
> # Buildout
> Products.Doormat = 0.8
> collective.embedly = 2.2
>
> # Development tools
> bpython = 0.9.7.1
> pygments = 1.4
> Products.DocFinderTab = 1.0.4
> Products.PDBDebugMode = 1.3.1
> Products.PrintingMailHost = 0.7
> jarn.mkrelease = 3.0.9
> setuptools-git = 0.4.2
> setuptools-hg = 0.2
> plone.api = 1.0.0-rc.1
> Products.ImageEditor = 3.0.0
>
> # ZopeSkel
> ZopeSkel = 2.19
> Cheetah = 2.2.1
> Paste = 1.7.5.1
> PasteScript = 1.7.3
> PasteDeploy = 1.3.4
>
> [downloads]
> varnish = http://repo.varnish-cache.org/source/varnish-2.1.5.tar.gz
> pcre    = 
> http://downloads.sourceforge.net/project/pcre/pcre/8.01/pcre-8.01.tar.gz
>

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