小编bry*_*man的帖子

我有一个带有子文档的mongoose模式.父模式和子模式都具有预保存挂钩.例如:

var mongoose = require('mongoose');
var Schema = mongoose.Schema;

var SubSchema = new Schema( { x : Number } );
SubSchema.pre('save', function (next) {
  console.log("pre save Sub");
  next();
});

var MainSchema = new Schema( { x : Number, children : [SubSchema] } );
MainSchema.pre('save', function (next) {
  console.log("pre save Main");
  next();
});
var Main = mongoose.model('Main', MainSchema);

var m = new Main();
m.children.push( { x : 42 } );

m.save( function(err, doc) {
  console.log(doc +"\n\n");
  doc.children[0].x = 43;

  doc.save( function(err, …