def admin_list_pi():
active_projects = Project.query.filter(Project.is_active==True)
if 'year' in request.args and 'month' in request.args:
active_projects = limit_month(active_projects,
int(request.args['year']),
int(request.args['month']))
pi_list = []
for project in active_projects:
if not project.pi in pi_list:
pi_list.append(project.pi)
flat_list = [flatten(pi, attrib_filter=['name','username','id']) for pi in pi_list]
return jsonify({'name':"active_pis", 'object_list': flat_list})