Node.js 如何从父实例访问mongoose中的子文档实例?
在上面的代码中,我希望访问Node.js 如何从父实例访问mongoose中的子文档实例?,node.js,mongodb,mongoose,Node.js,Mongodb,Mongoose,在上面的代码中,我希望访问ParentSchema中ChildSchema的getName方法。如何在猫鼬身上做到这一点 非常感谢。请尝试使用子文档索引作为参数,如下所示 var mongoose = require('mongoose'); var Schema = mongoose.Schema; var ChildSchema = new Schema({ name: String }); ChildSchema.methods.getNam
ParentSchema
中ChildSchema
的getName
方法。如何在猫鼬身上做到这一点
非常感谢。请尝试使用
子文档索引作为参数,如下所示
var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var ChildSchema = new Schema({
name: String
});
ChildSchema.methods.getName = function () {
return this.name;
}
var ParentSchema = new Schema({
children: {
type: [ChildSchema]
default: []
}
});
ParentSchema.methods.getChildName = function () {
// How to facilitate ability to access instance of ChildSchema to call child.getName
}
var Parent = mongoose.model('Parent', ParentSchema);
ParentSchema.methods.getChildName = function (idx) {
return this.children[idx].getName();
}
var p = new Parent({
children: [{ name: 'Matt' }, { name: 'Sarah' }]
});
console.log(p.getChildName(1)); // Sarah