我有一个这样的家庭模式(孩子在学校读书)...
var familySchema = new Schema({
parents: [{
firstName: String,
lastName: String,
email: String,
}],
students: [{
firstName: String,
lastName: String,
grade: Number,
}]
});
我想描述许多有教室的学校,并且教室里有学生,像这样...
var schoolSchema = new Schema({
name: String,
street: String,
classrooms: [{
classroomNumber: Number,
students: [ /* I am mixed up here */ ]
}]
});
我如何告诉猫鼬,我想要其他集合中找到的学生的对象ID数组?
我明白from this answer的意思,如果我想让教室参考家庭文件,我可以这样说:
families: { type : ObjectId, ref: 'Family' }
但是如何对另一个集合的子文档执行相同的操作? (如果不是很明显,我将同时学习mongo和mongoose)。
最佳答案
如果要使用子文档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 );
关于javascript - 来自不同集合的子文档ID数组的 Mongoose 模式,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/35447665/