我使用hybrid_property来组合或操纵列值。我希望得到一个关键的'此hybrid_property列的属性。这是代码。
class Foo(Base):
name = Column(String)
address = Column(String)
city = Column(String)
@hybrid_property
def full_address(self):
return '{}, {}'.format(self.address, self.city)
@full_address.expression
def full_address(self):
return func.str('{}, {}'.format(self.address, self.city))
并在Python Shell中:
>>> fld = Foo.name
>>> fld.key
'name'
>>> fld = Foo.full_address
>>> fld.key
>>> type(fld.key)
<class 'NoneType'>
如何获取fld.key是&#39; full_address&#39;?
先谢谢。
答案 0 :(得分:0)
最后我得到了答案
@hybrid_property def full_address(self): if isinstance(self,Foo): 返回&#39; {},{}&#39; .format(self.address,self.city) 其他: 返回列(&#39; full_address&#39;,字符串)