def create(context, request):
try:
name = request.params['name']
parent = request.params.get('parent')
g = Group(name=name)
request.db_session.add(g)
request.db_session.flush()
if parent:
try:
g.parent = Group.get(request.db_session, parent)
except NoResultFound:
raise ParamsError('Invalid parent: %s', parent)
except KeyError as e:
raise ParamsError('Missing parameter: {}'.format(e))
except IntegrityError as e:
error = 'Group {} already exists'.format(name)
raise HTTPConflict(headers={'X-Request-Error': error})
else:
request.db_session.commit()
raise HTTPCreated()
