Google app engine EmailProperty与StringProperty有何不同?
Google app engine EmailProperty与StringProperty有何不同?,google-app-engine,email,Google App Engine,Email,EmailProperty与StringProperty有何不同?考虑这两个例子: # example 1: store an e-mail address in an EmailProperty class MyModel(db.Model): email_address = db.EmailProperty() m = MyModel() m.email_address = db.Email("larry@example.com") # example 2: store an e-ma
EmailProperty
与StringProperty
有何不同?考虑这两个例子:
# example 1: store an e-mail address in an EmailProperty
class MyModel(db.Model):
email_address = db.EmailProperty()
m = MyModel()
m.email_address = db.Email("larry@example.com")
# example 2: store an e-mail address in a StringProperty
class MyModel(db.Model):
email_address = db.StringProperty()
m = MyModel()
m.email_address = "larry@example.com"
如果调用
entity.to_xml()
,EmailProperty将返回实体的Atom表示形式
请注意,使用EmailProperty不会提供电子邮件地址格式的自动验证。gd:email是GData API的一部分,它完全符合AtomPub。因此,它对普通atom不有用。