Update the ID sequence for a given model

gistfile1.py

def fix_id_sequence(model_class):
    from django.db import connection
    next_val = model_class.objects.all().order_by("-id")[0].id + 1
    cursor = connection.cursor()
    cursor.execute("select setval('%s_id_seq', %d, True)" % (model_class._meta.db_table, next_val))
    row = cursor.fetchone()
    cursor.close()
    return row[0]