69 lines
2.5 KiB
Plaintext
69 lines
2.5 KiB
Plaintext
==============================================================================
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Howto override the enable_conversation method.
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==============================================================================
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plone.app.discussion way to decide if commenting is enabled on a content
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object can be quite complex and cumbersome due to the need to be backward
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compatible with the way the old commenting system in Plone (<4.1) worked.
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The comments viewlet calls the enabled method of the ConversationView to
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decide if the add comment form should show up:
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.. literalinclude:: ../../../plone/app/discussion/browser/conversation.py
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:language: python
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:pyobject: ConversationView
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If you want to override this behavior, you just have to create your own enabled method. To do so, we first have to register our custom
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ConversationView by overriding the existing one in our configure.zcml::
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<configure
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xmlns="http://namespaces.zope.org/zope"
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xmlns:browser="http://namespaces.zope.org/browser"
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i18n_domain="mycustompackage.discussion">
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<!-- Override plone.app.discussion's conversation view -->
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<browser:page
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name="conversation_view"
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for="plone.dexterity.interfaces.IDexterityContent"
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class=".conversation.ConversationView"
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permission="zope2.View"
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/>
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</configure>
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Now we implement the conversation view with a single "enable" method in
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conversation.py::
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from zope.component import queryUtility
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from plone.registry.interfaces import IRegistry
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from Acquisition import aq_inner
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from Products.CMFCore.utils import getToolByName
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from plone.app.discussion.interfaces import IDiscussionSettings
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class ConversationView(object):
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def enabled(self):
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context = aq_inner(self.context)
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# Fetch discussion registry
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registry = queryUtility(IRegistry)
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settings = registry.forInterface(IDiscussionSettings, check=False)
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# Check if discussion is allowed globally
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if not settings.globally_enabled:
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return False
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# Check if discussion is allowed on the content object
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if context.allow_discussion is not None:
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return context.allow_discussion
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# Check if discussion is allowed on the content type
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portal_types = getToolByName(self, 'portal_types')
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document_fti = getattr(portal_types, context.portal_type)
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return document_fti.getProperty('allow_discussion')
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