Created
December 7, 2011 03:18
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Class Factory?
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TAG_TYPES = ["location", "category"] | |
class Tag(db.Model, BaseEntityMixIn, | |
IgnoreDeletionMixIn): | |
__tablename__ = "tag" | |
name = db.Column(db.Unicode(255), index=True) | |
type = db.Column(db.Enum(*TAG_TYPES, native_enum=False), index=True) | |
__mapper_args__ = {'polymorphic_on': type} | |
g = globals() | |
for t in TAG_TYPES: | |
def __init__(self, t=t, **kwargs): | |
kwargs["type"] = t | |
Tag.__init__(self, **kwargs) | |
cls_name = t.capitalize()+"Tag" | |
cls = type(cls_name, (Tag,), {'__tablename__':None, | |
'__mapper_args__': {'polymorphic_identity' : t}, | |
'__init__': __init__}) | |
g[cls_name] = cls |
예. flask-sqlalchemy를 덮어씌워 쓰고는 있는데 저기선 드러날게 없을거고... BaseEntityMixIn이나 IgnoreDeletionMixIn은 자체적으로 만든 믹스인이죠.
생각해보니까 Tag.type을 서브타입 추가할때마다 자동으로 확장되게 해야겠네....
flask-sqlalchemy라니!
다른건 아니고 SQLAlchemy를 날로 쓰면 보통 db.~~~
같은 게 안 붙어서 혹시나 했어요.
https://gist.github.com/1441484 이런 짓을 하면... 안되겠죠 =3
SAWarning이 거슬려서 type()을 쓰게끔 대대적으로 변경...
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SQLAlchemy의 냄새가 강하게 느껴지네요... 그런데 뭔가 다른 확장을 같이 쓰고 계신 건가요?