Question

I’ve been trying to create content in my plone site using the Dexterity tool createContentInContainer.

I wrote a script that runs under my zopepy instance, and it accomplishes the following:

• Selects data from a SQL table.
• Creates a list of tuples that mirrors the custom content type defined in my product.

I know I’m extremely naive in my approach, but I’ve created a connection to the applications database by:

storage = FileStorage.FileStorage('.../var/filestorage/Data.fs')
db = DB(storage)
conn = db.open()
dbroot = conn.root()

I’m trying to create content by:

createContentInContainer(dbroot['Application']['myapp']['existingfolder'], portal_type, checkConstraints=False, content=item)

portal_type is previously set to my custom content type. item has been both the list of tuples passed to the content’s interface (which throws a Could not adapt TypeError) as well as an unregistered adapter that inherits from the interface.

The interface for the type is registered in mysite.Widget.xml in profiles/defualt/types, but the script keeps throwing:

Traceback (most recent call last):
  File "./bin/zopepy", line 345, in <module>
    execfile(__file__)
  File "importdex.py", line 105, in <module>
    createContentInContainer(dbroot['Application']['myapp']['existingfolder'], portal_type, checkConstraints=False, content=item)
  File "env/mysite/eggs/plone.dexterity-1.0-py2.7.egg/plone/dexterity/utils.py", line 149, in createContentInContainer
    content = createContent(portal_type, **kw)
  File "env/mysite/eggs/plone.dexterity-1.0-py2.7.egg/plone/dexterity/utils.py", line 105, in createContent
    fti = getUtility(IDexterityFTI, name=portal_type)
  File "env/mysite/eggs/zope.component-3.9.5-py2.7.egg/zope/component/_api.py", line 169, in getUtility
    raise ComponentLookupError(interface, name)
zope.component.interfaces.ComponentLookupError: (<InterfaceClass plone.dexterity.interfaces.IDexterityFTI>, 'mysite.Widget')

As I’ve mentioned, I know I’m extremely naive in my approach, and I probably deserve a slap on the hand. I apologize if I’ve presented my question in a confusing manner.

My questions are these:

• Can I instantiate createContentInContainer from zopepy? Is my rigged connection enough or does the script need to be run within the application to inherit stuff that Dexterity/FTI needs to accomplish what I’m asking?
• Do I need an adapter? The one i have inherits from grok.Adapter and passes the interface to grok.provides and grok.context, but should it declare properties based on the entirety of the content schema?
• The list of tuples is arbitrary. It just seemed like the thing to do given the structure of the ZODB. If I declare the schema of the content type as properties in a registered adapter, the data should be crafted to conform to attributes of an object (the adapter), right?

Answer 1

You need to set up a little more context for your code to work. The Plone site acts as a local component registry, for example.

You are also better off using the bin/instance run [scriptname] command, it’ll set up the database connection for you and pass the root object as app to your script. In that script, use the following boilerplate to get the rest of the scaffolding up:

import transaction
from zope.app.component.hooks import setSite
from Testing.makerequest import makerequest
from AccessControl.SecurityManagement import newSecurityManager

plone_site_id = 'Plone' # Adjust as needed.

app = makerequest(app)
site = app[plone_site_id]
setSite(site)
user = app.acl_users.getUser('admin').__of__(site.acl_users)
newSecurityManager(None, user)

With these in place you’ll have everything you need to run your code. Don’t forget to call transaction.commit() at the end. Your Plone site is reachable in the local variable site.