python flask model 序列化

class DictSerializable(object):

def as_dict(self,*args):

result = OrderedDict()

keys=args or self.__mapper__.c.keys()

for key in keys:

if hasattr(self,key):

obj=getattr(self, key)

if isinstance(obj,basestring):

value=obj

elif isinstance(obj,int) or isinstance(obj,long) or isinstance(obj,float):

value=obj

elif isinstance(obj,Decimal):

value=str(obj)

elif isinstance(obj,types.choice.Choice):

value=obj.code

elif isinstance(obj,datetime):

value=obj.strftime(‘%Y-%m-%d %M:%H:%S‘)

elif isinstance(obj,date):

value=obj.strftime(‘%Y-%m-%d‘)

else:

raise Exception(‘不支持系列化[%s]类型!‘ % type(obj))

result[key] = value

return result

def as_json(self,*args):

d=self.as_dict(*args)

return json.dumps(d)

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result1=pagination(page,rows1)

for credit in result1:

rows.append(credit.as_dict(‘id‘,‘title‘,‘week_rule‘,‘latefee_rate‘,‘extra_cost_rate‘,‘due_days‘,‘remark‘))

return json.dumps(credit_result)

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