我为一个家庭(他们的孩子在学校注册)有这样的架构...
var familySchema = new Schema({
parents: [{
firstName: String,
lastName: String,
email: String,
}],
students: [{
firstName: String,
lastName: String,
grade: Number,
}]
});
我想描述许多包含教室的学校,并且教室里有学生,就像这样......
var schoolSchema = new Schema({
name: String,
street: String,
classrooms: [{
classroomNumber: Number,
students: [ /* I am mixed up here */ ]
}]
});
如何告诉mongoose我想要在其他集合中找到的学生的一组对象id?
我理解from this answer如果我希望教室参考家庭文件,我可以这样说:
families: { type : ObjectId, ref: 'Family' }
但我如何对另一个集合的 sub - 文档执行相同的操作? (如果不是很明显,我只是学习mongo和mongoose)。
答案 0 :(得分:1)
如果您想使用子文档reference,则需要更改对'student'
数组的引用。
var studentSchema = new Schema({
firstName: String,
lastName: String,
grade: Number,
});
var familySchema = new Schema({
parents: [{
firstName: String,
lastName: String,
email: String,
}],
students: [studentSchema]
});
var schoolSchema = new Schema({
name: String,
street: String,
classrooms: [{
classroomNumber: Number,
students: [ { type: ObjectId, ref: 'Family.students' }]
}]
});
var Student = mongoose.model('Student', studentSchema );
var Family = mongoose.model('Family ', familySchema );
var School = mongoose.model('School', schoolSchema );