(新到斯堪和GAE)
I m 要求解释db中的类别变量的使用。 模型子类,与案例变量一样处理。 为什么在班级范围而不是在<条码>_init__上宣布? 是否需要这种特别的GAE要求?
是的,这是对公认会计原则特别适用的方案拟订模式。 你们可以将类别特性视为表定义。 举例来说,这些财产是一行的内容,他们用上层的桶在飞机上居住。 PropertiedClass。
There is a lot going on under the hood, if you are interested always have a look at the source: http://code.google.com/p/googleappengine/source/browse/trunk/python/google/appengine/ext/db/init.py
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