def load(self, csv_filename = 'prefs.csv'):
with open(csv_filename, 'rb') as f:
reader = csv.DictReader(f)
model_manager = ModelManager()
model_manager.groups = self._get_groups_from_csv_dict_reader(reader)
model_manager.individuals = self._get_individuals_from_csv_dict_reader(reader)
return model_manager
def load_from_string(self, json_string):
model_manager = ModelManager()
groups = {}
individuals = {}
j = json.loads(json_string)
if j:
# load groups
if 'groups' in j:
if len(j['groups']):
for group_id, g_v in j['groups'].iteritems():
group = Group(str(group_id))
group.max_size = g_v['max']
groups[str(group_id)] = group
else:
raise Exception("Invalid JSON string for preference input. Must have at least one group defined in 'groups' dictionary.")
else:
raise Exception("Invalid JSON string for preference input. Must have 'groups' dictionary.")
# load individuals
if 'individuals' in j:
if len(j['individuals']):
for individual_id, i_v in j['individuals'].iteritems():
individual = Individual(str(individual_id))
for group_id, group_pref_value in i_v['prefs'].iteritems():
individual.set_group_pref_value(str(group_id), float(group_pref_value))
individuals[str(individual_id)] = individual
else:
raise Exception("Invalid JSON string for preference input. Must have at least one group defined in 'individuals' dictionary.")
else:
raise Exception("Invalid JSON string for preference input. Must have 'individuals' dictionary.")
model_manager.individuals = individuals
model_manager.groups = groups
return model_manager
