node.js 猫鼬模式中的嵌套对象
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Nested objects in mongoose schemas
提问by Samuel E.
i've seen many answers to this question here, but i still don't get it (maybe because they use more "complex" examples)... So what im trying to do is a schema for a "Customer", and it will have two fields that will have nested "subfields", and others that may repeat. here is what i mean:
我在这里看到了这个问题的很多答案，但我仍然不明白（也许是因为他们使用了更“复杂”的例子）......所以我试图做的是一个“客户”的模式，它将有两个具有嵌套“子字段”的字段，以及其他可能重复的字段。这就是我的意思：
let customerModel = new Schema({
firstName: String,
lastName: String,
company: String,
contactInfo: {
tel: [Number],
email: [String],
address: {
city: String,
street: String,
houseNumber: String
}
}
});
teland emailmight be an array. and address will not be repeated, but have some sub fields as you can see.
tel和email可能是一个数组。和地址不会重复，但有一些子字段，如您所见。
How can i make this work?
我怎样才能使这项工作？
回答by asissuthar
var mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/test');
var CustomerModel = mongoose.model('CustomerModel', {
firstName: String,
lastName: String,
company: String,
connectInfo: {
tel: [Number],
email: [String],
address: {
city: String,
street: String,
houseNumber: String
}
}
});
//create a record
var customer = new CustomerModel({
firstName: 'Ashish',
lastName: 'Suthar',
company: 'asis',
connectInfo: {
tel: [12345,67890],
email: ['[email protected]','[email protected]'],
address: {
city: 'x',
street: 'y',
houseNumber: 'x-1'
}
}
});
//insert customer object
customer.save((err,cust) => {
if(err) return console.error(err);
//this will print inserted record from database
//console.log(cust);
});
// display any data from CustomerModel
CustomerModel.findOne({firstName:'Ashish'}, (err,cust) => {
if(err) return console.error(err);
//to print stored data
console.log(cust.connectInfo.tel[0]); //output 12345
});
//update inner record
CustomerModel.update(
{firstName: 'Ashish'},
{$set: {"connectInfo.tel.0": 54320}}
);
回答by esraa ali
// address model
var addressModelSchema = new Schema({
city: String,
street: String,
houseNumber: String
})
mongoose.model('address',addressModelSchema ,'address' )
// contactInfo model
var contactInfoModelSchema = new Schema({
tel: [Number],
email: [String],
address: {
type: mongoose.Schema.Type.ObjectId,
ref: 'address'
}
})
mongoose.model('contactInfo ',contactInfoModelSchema ,'contactInfo ')
// customer model
var customerModelSchema = new Schema({
firstName: String,
lastName: String,
company: String,
contactInfo: {
type: mongoose.Schema.Type.ObjectId,
ref: 'contactInfo'
}
});
mongoose.model('customer', customerModelSchema, 'customer')
// add new address then contact info then the customer info
// it is better to create model for each part.
