def post(self,**kw):
experiment = DBSession.query(Experiment).get(kw.get('id'))
if not experiment :
experiment=Experiment()
experiment.fractions=[]
for f_id in kw.get('fractions'):
experiment.fractions.append(DBSession.query(Fraction).get(f_id))
experiment.title = kw.get('title')
experiment.code = kw.get('code')
experiment.description = kw.get('description')
experiment.comment = kw.get('comment')
DBSession.flush()
flash( '''Modified experiment: %s'''%( kw.get('code') ))
redirect( '/experiments' )
