plone.app.contenttypes migration helpers

gistfile1.txt

def attr_migrator(old, new, old_name, new_name):
    field = old.getField(old_name)
    if not field:
        return
    val = field.get(old)
    val_str = str(val)
    if old_name == 'teacher':
        if not isinstance(val, list):
            val = []
        teachers = []
        for it in val:
            teachers.append(IUUID(it))
        val = teachers
    logger.info(
        "Migrating attribute: %s, value: %s" % (
            new_name,
            len(val_str) > 10 and '%s...' % val_str[:10] or val_str
        )
    )
    setattr(new, new_name, val)


def image_migrator(old, new):
    # from plone.app.contenttypes.migrate.migration
    old_image = old.getField('image').get(old)
    if old_image == '':
        return
    filename = safe_unicode(old_image.filename)
    old_image_data = old_image.data
    if safe_hasattr(old_image_data, 'data'):
        old_image_data = old_image_data.data
    namedblobimage = NamedBlobImage(data=old_image_data,
                                    filename=filename)
    new.image = namedblobimage
    caption_field = old.getField('imageCaption', None)
    if caption_field:
        new.image_caption = safe_unicode(caption_field.get(old))

    logger.info("Migrating image %s" % filename)