const mongoose = require('mongoose'); mongoose.connect('mongodb://localhost/playground', { useUnifiedTopology: true }).then(() => console.log('數(shù)據(jù)庫連接成功')).catch(err => console.log(err, '數(shù)據(jù)庫連接失敗'))//創(chuàng)建集合規(guī)則 const postSchema = new mongoose.Schema({title: {type: String,require: [true, '請傳入文章標題'],minlength: [2, '輸入長度不能小于2'],maxlength: [5, '輸入長度不能大于5'],//不允許有空格trim: true},age: {type: Number,//數(shù)字得最小范圍min: 18,//數(shù)字得最大范圍max: 100},publishDate: {type: Date,default: Date.now},category: {type: String,enum: ['html', 'css', 'javascript']},author: {type: String,validate: {validator: v => {//true 驗證成功//false驗證失敗v.length>4return v && v.length > 4},//自定義錯誤信息message: '傳入得值不符合規(guī)則'}} }); const Post = mongoose.model('Post', postSchema); //插入數(shù)據(jù) Post.create({ title: 'aa', age: 60, category: 'html', author: '12345' }).then(result => console.log(result));

運行結(jié)果

總結(jié)

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