var mongoose = require(‘mongoose‘)
mongoose.connect(‘mongodb://123.206.112.122:27017/blog‘)

var db = mongoose.connection;
db.on(‘error‘, console.error.bind(console, ‘connection error:‘));
db.once(‘open‘, function() {
    console.log(‘hehe‘)
    var essaySchema = mongoose.Schema({
        id:Number,
        title:String,
        content:String
    })
    essaySchema.methods.log = function(){
        console.log(this.title)
    }
    var Essay = mongoose.model(‘Essay‘,essaySchema)

    var essay1 = new Essay({id:1,title:‘essay title‘,content:‘1‘})
    
    essay1.save(function(err,essay1){
        if(err) return console.error(err);
        essay1.log()
    })
});