__author__ = 'chenzhao'
import datetime
import re
import hashlib
from flask.ext.sqlalchemy import SQLAlchemy
from sqlalchemy.schema import UniqueConstraint
from sqlalchemy.orm import backref
db = SQLAlchemy()
GEO_NUMBER_TYPE = db.REAL()
#python any is stupid
def good_any(l):
for i in l:
if i:
return i
return False
def get_or_create(model, **kwargs):
instance = db.session.query(model).filter_by(**kwargs).first()
if instance:
return instance
else:
instance = model(**kwargs)
db.session.add(instance)
db.session.flush()
return instance
