作为mongodb的老手,我创建了以下结构: name: str, }
# author and receiver refer to User objects obviously receiver: object_id(...),
... 我想在mongoid中正确地映射这一点: include Mongoid::Document
end
clas
我在quizId中有两个表,测试是主键,我已经把它设置为auto_increment,.I,有另一个表quizQuestions,在这个表quizQuestions中,我想要quizID of quiz表作为主键。以下是以下问题: quizId int(11) NOT NULL AUTO_INCREMENT, examDate date DEFAULT NULL,
PRIMARY KEY (quizId)