Можете да подадете своя низ на заявка в регулярен израз на populate.
5.js
const mongoose = require('mongoose');
let EmployeeSchema = new mongoose.Schema({
Name: String,
email: String,
department: {ref: 'department', type: mongoose.Schema.Types.ObjectId}
});
let DepartmentSchema = new mongoose.Schema({
name: String
});
run().catch((err) => console.log(err));
async function run() {
await mongoose.connect('mongodb://localhost:27017/test', {
useNewUrlParser: true,
useUnifiedTopology: true,
});
await mongoose.connection.dropDatabase();
const EmployeeModel = mongoose.model('employee', EmployeeSchema);
const DepartmentModel = mongoose.model('department', DepartmentSchema);
const departmentObj = new DepartmentModel({name: "software developer"});
const {_id} = await departmentObj.save();
const employeeObj = new EmployeeModel({email: '[email protected]', Name: "alexa", department: _id});
const result = await (await employeeObj.save()).populate({path: 'department', match: {
name: {$regex: 'soft'}
}}).execPopulate()
console.log(result)
}