def find_by(cls, where , *args):
"""
通过where语句进行条件查询，将结果以一个列表返回
"""
L = dbHandler.select('select * from `%s` %s' % (cls.__table__, where), *args)
return [cls(**d) for d in L]
def count_all(cls):
"""
执行 select count(pk) from table语句，返回一个数值
"""
return dbHandler.select('select count(`%s`) from `%s`' % (cls.__primay_key__.name, cls.__table__))
def find_all(cls, *args):
"""
查询所有字段， 将结果以一个列表返回
"""
L = dbHandler.select('select * from %s' % cls.__table__)
return [cls(**d)for d in L]
