[Answered ]-Split the revision.comment into field and value in Django-reversion

I hope I understood the problem properly, here’s the half baked solution to it:

from django.db.models.signals import pre_save
from django.dispatch import receiver
import reversion

@receiver(pre_save)
def _pre_save(sender, **kwargs):
    _i = kwargs.get('instance')
    _i_old = sender.objects.get(pk=_i.pk)
    _current, _past = set(_i.__dict__.keys()), set(_i_old.__dict__.keys())
    _intersection = _current.intersection(_past)
    _changed_keys = set(o for o in _intersection if _i.__dict__[o] != _i_old.__dict__[o])
    _comment = ['changed {} from {} to {}'.format(_, _i_old.__dict__[_], _i.__dict__[_]) for _ in _changed_keys]
    reversion.set_comment(', '.join(_comment))

Haven’t thought much about the performance overhead, but this should do the trick.

Hope this helps.