def save_package(metadata, id=None):
metadata['last_updated'] = datetime.now()
package = {}
if id is not None:
existing_package = retrieve_package(id).to_python()
for k in metadata:
try:
existing_package[k] = metadata[k]
except:
continue
package = Package(**existing_package)
else:
package = Package(**metadata)
# parse the metadata
try:
package.validate()
except:
raise HelperException("The metadata used to create the package object was not in the expected form.", 400)
# create the package object
try:
return _save_from_model(package)
except Exception as e:
raise HelperException("The learning package could not be saved. " + str(e), 500)
def retrieve_json_package(id):
pkg = json.loads(Package.make_json_publicsafe(retrieve_package(id)))
for item in pkg['files']:
item['type'] = 'file'
for item in pkg['urls']:
item['type'] = 'url'
if pkg['files'] is None:
pkg['files'] = []
pkg['resources'] = pkg['files'] + pkg['urls']
del pkg['files']
del pkg['urls']
return json.dumps(pkg)