Zope Debug Prompt¶
Interacting with Plone from the Zope debug prompt.
The Zope debug prompt is a way of starting a Zope client from the command line, and allows you to directly interact with Plone.
Some things that you can do through the debug prompt:
- Examine objects to see their properties/methods
- Update objects in bulk, as opposed to one at a time through the user interface.
- Produce reports or export data from objects
This is very similar to the Python debug prompt (just entering
python at the command line) and the same whitespace restrictions apply.
With great power comes great responsibility.
Interacting with Plone from the Zope debug prompt is a very powerful tool, and lets you quickly make changes that might take hours or days to implement manually.
It is also a great way to severely damage your site, in a way that might take hours or days to fix.
Precautions for developing code that makes updates via the debug prompt:
- Log the changes that you’re going to make using the
- Only commit the transaction (
transaction.commit()) after the code has run successfully.
- Attempt to develop the code in an idempotent (able to be run multiple times with no ill effects) manner.
Starting the debug prompt interactively¶
This assumes that you are running Plone in a ZEO configuration on a *NIX server, and your Zope clients run as the
After logging into your server, start the debug prompt with:
sudo -u plone_daemon /path/to/zope/bin/client1 debug
The output will look something like:
Starting debugger (the name "app" is bound to the top-level Zope object) 2015-06-26 12:33:51 WARNING SecurityInfo Conflicting security declarations for "manage_pasteObjects" 2015-06-26 12:33:51 WARNING SecurityInfo Class "CopyContainer" had conflicting security declarations 2015-06-26 12:33:52 WARNING Init Class Products.Five.metaclass.RedirectsView has a security declaration for nonexistent method 'errors' >>>
There may be some additional warnings, based on the products installed.
From here, the
app variable is equivalent to the root of your Zope instance.
A simple example:
from AccessControl.SecurityManagement import newSecurityManager from Testing.makerequest import makerequest from zope.component.hooks import setSite from plone import api import transaction app = makerequest(app) # Enables functionality that expects a REQUEST app._p_jar.sync() # Syncs the debug prompt with any transactions site=app['Plone'] # Use your site id setSite(site) # Sets the current site as the active site # Simulate logging in as the Zope 'admin' user with api.env.adopt_user(username="admin"): # Grab the portal_catalog tool portal_catalog = api.portal.get_tool(name='portal_catalog') # Query the catalog for all results. Returns 'brains' results = portal_catalog.searchResults() # Print the number of objects in the catalog print u"My site has %d objects." % len(results)