def _register_model(admin, model):
    if not hasattr(admin, 'revision_manager'):
        admin.revision_manager = default_revision_manager
    if not hasattr(admin, 'reversion_format'):
        admin.reversion_format = 'json'

    if not admin.revision_manager.is_registered(model):
        inline_fields = []
        for inline in getattr(admin, 'inlines', []):
            inline_model = inline.model
            if getattr(inline, 'generic_inline', False):
                ct_field = getattr(inline, 'ct_field', 'content_type')
                ct_fk_field = getattr(inline, 'ct_fk_field', 'object_id')
                for field in model._meta.many_to_many:
                    if isinstance(field, GenericRelation) \
                            and field.rel.to == inline_model \
                            and field.object_id_field_name == ct_fk_field \
                            and field.content_type_field_name == ct_field:
                        inline_fields.append(field.name)
                _autoregister(admin, inline_model)
            else:
                fk_name = getattr(inline, 'fk_name', None)
                if not fk_name:
                    for field in inline_model._meta.fields:
                        if isinstance(field, (models.ForeignKey, models.OneToOneField)) and issubclass(model, field.rel.to):
                            fk_name = field.name
                _autoregister(admin, inline_model, follow=[fk_name])
                if not inline_model._meta.get_field(fk_name).rel.is_hidden():
                    accessor = inline_model._meta.get_field(fk_name).remote_field.get_accessor_name()
                    inline_fields.append(accessor)
        _autoregister(admin, model, inline_fields)
dataset/ETHPy150Open sshwsfc/xadmin/xadmin/plugins/xversion.py/_register_model/original