mongoose学习记录

const mongoose = require('mongoose');

mongoose.connect('mongodb://localhost/playground')
  .then(() => console.log('数据库链接成功'))
  .catch(err => console.log(err, '数据库链接失败') );

// 创建集合规则
const courseSchema =  new mongoose.Schema({
  name: String,
  author: String,
  isPublished: Boolean
});

// 使用规则创建集合  1.集合名称 2.集合规则
const Course = mongoose.model('Course', courseSchema);
// 创建文档
const course = new Course({
  name: 'node.js基础',
  author: '黑马讲师',
  isPublished: true
});
// 将文档插入到数据库中
course.save();