def handle(self, holdings_source=default_location, *args, **options):
if not os.path.exists(holdings_source):
_logger.error("There is no valid holdings source folder defined.")
set_holdings = ['To load holdings - Add a folder called "holdings"',
'to the bib directory that is set in settings',
'or pass the location of holdings as an arguement to the loader.',]
_logger.error(' '.join(set_holdings))
return
# First we want to make sure that our material types are up to date
material_types = models.MaterialType.objects.all()
[m.delete() for m in material_types]
management.call_command('loaddata', 'material_types.json')
holding_loader = HoldingLoader()
holding_loader.main(holdings_source)