NamedBlobFile - Modification Date of File

andreasma · May 31, 2019, 9:49am

Hello,

I created a Dexterity content type with some namedblobfields. The user of the site could upload files using this fields. If they created a new version of their files they could replace the current file with their new one. I'm wondering if there is a way to get the modification date of the namedblobfield (the date the file is uploaded) or alternatively the meta-data from the file (it's modification date).
I could only find information about the modification date of the Dexterity content type itself.
Thanks for any hint.
Andreas

mtrebron · June 1, 2019, 10:08am

If your field is a primaryfield (marshal:primary="true" ) I would look here for inspiration:

github.com

plone/plone.app.dexterity/blob/master/plone/app/dexterity/behaviors/filename.py

# -*- coding: utf-8 -*-
from plone.app.content.interfaces import INameFromTitle
from plone.rfc822.interfaces import IPrimaryFieldInfo
from Products.CMFPlone.utils import safe_hasattr
from zope.component import adapter
from zope.interface import implementer
from zope.interface import Interface

import six


class INameFromFileName(Interface):
    """Marker interface to enable name from filename behavior"""


@implementer(INameFromTitle)
@adapter(INameFromFileName)
class NameFromFileName(object):

    def __new__(cls, context):

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and expect the modification date info to be here: info = IPrimaryFieldInfo(context, None)