在数组nodejs mongoose JOI上存储2个值的数组

npm install mongoose joi

const mongoose = require('mongoose');
const Joi = require('joi');

mongoose.connect('mongodb://localhost/mydatabase', { useNewUrlParser: true, useUnifiedTopology: true })
  .then(() => console.log('Connected to MongoDB'))
  .catch(err => console.error('Failed to connect to MongoDB', err));

const mySchema = new mongoose.Schema({
  myArray: {
    type: [Number],
    required: true,
    validate: {
      validator: function(arr) {
        return arr.length === 2;
      },
      message: 'myArray must contain exactly 2 values'
    }
  }
});

const MyModel = mongoose.model('MyModel', mySchema);

const schema = Joi.object({
  myArray: Joi.array().items(Joi.number()).length(2).required()
});

const validationResult = schema.validate({ myArray: [1, 2] });
if (validationResult.error) {
  console.error(validationResult.error.details[0].message);
} else {
  console.log('Validation passed');
}

const data = new MyModel({ myArray: [1, 2] });
data.save()
  .then(() => console.log('Data saved'))
  .catch(err => console.error('Failed to save data', err));