问题
The structure of the project is
structure
The main file is index.js that is located in the main directory. This one has
'use strict'
var mongoose = require('mongoose');
var app = require('./app');
var port = process.env.port || 3000;
mongoose.connect('mongodb://localhost:27017/changeProducts',(err,res) =>{
if(err){
throw err;
}else{
console.log("Base de datos funcionando correctamente..");
app.listen(port, function(){
console.log('Servidor nodejs corriendo(app.listen)... ');
});
}
});
The version of mongoose is 5.0
The app.js is
'use strict'
var express = require('express');
var bodyParser = require('body-parser');
var app = express();
//carga de rutas
//cr
var roleRoutes = require('./routes/cr/role');
var userRoutes = require('./routes/cr/user');
var loginRoutes = require('./routes/cr/login');
//category
var categoryRoutes = require('./routes/cr/category');
//publication
var publicationRoutes = require('./routes/publication/publication');
var offerRoutes = require('./routes/publication/offer');
app.use(bodyParser.urlencoded({
extended: false
}));
app.use(bodyParser.json());
//configurar cabeceras
app.use((req, res, next)=>{
res.header('Access-Control-Allow-Origin', '*');
res.header('Access-Control-Allow-Headers', 'X-API-KEY, Origin, X-Requested-With','Content-Type, Accept, Access-Control-Request-Method');
res.header('Access-Control-Allow-Method', 'GET, POST, OPTIONS, PUT, DELETE');
res.header('Allow', 'GET, POST, OPTIONS, PUT, DELETE');
next();
});
//rutas base
//cr
app.use('/api', roleRoutes);
app.use('/api', userRoutes);
app.use('/api', loginRoutes);
app.use('/api', categoryRoutes);
//publication
app.use('/api', publicationRoutes);
app.use('/api', offerRoutes);
module.exports = app;
the routes like userRoutes are in the folder routes.
the first route is routes/cr/category.js
'use strict'
var express = require('express');
var CategoryController = require('../../controllers/cr/category');
var api = express.Router();
var middlewareSecurity = require('../../security/middleware');
api.get('/categories', CategoryController.getCategories );
module.exports = api;
the other one is routes/cr/user.js
'use strict'
var express = require('express');
var UserController = require('../../controllers/cr/user');
var api = express.Router();
var middlewareSecurity = require('../../security/middleware');
//api.get('/users/',middlewareSecurity.HasRole("admin,user"), UserController.getUsers );
//actions of user
api.get('/users/', UserController.getUsers);
api.get('/user/:id', UserController.getUser);
api.post('/user', UserController.saveUser);
api.put('/user/:id', UserController.updateUser);
api.delete('/user/:id', UserController.deleteUser);
module.exports = api;
The schemas are in models/cr
the first schema that is located in 'models/category.js' is
'use strict'
var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var CategorySchema = Schema({
name: String,
subcategories: [{
name: String
}]
});
module.exports = mongoose.model('Category',CategorySchema);
The other Schema is UserSchema and it looks like this
'use strict'
var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var UserSchema = Schema({
firstName: {
type: String,
required: true
},
secondName: String,
lastName: {
type: String,
required: true
},
email: {
type: String,
unique: true,
required: true
},
password: {
type: String,
required: true
},
status: {
type: String,
required: true
},
roles: [{
type: Schema.ObjectId,
ref: 'Role'
}],
publications: [{
title: {
type: String,
},
description: String,
status: {
type: String,
},
createdAt: {
type: Date
},
updatedAt: {
type: Date,
default: Date.now()
},
pictures: [{
name: String
}],
categories: [{
type: Schema.Types.ObjectId,
refPath: 'Category'
}],
publicationOffers: [{
idpublication: [{
type: Schema.ObjectId,
ref: 'User.publications'
}],
iduser: {
type: Schema.ObjectId,
ref: 'User'
},
createdAt: {
type: Date
}
}]
}]
});
module.exports = mongoose.model('User', UserSchema);
I have a plugin called mongooseeder mongooseeder
In order to start I run in terminal
node seeds.
this create some data of category.
after I run
npm start(remember to install dependencies with npm install)
the file controllers/cr/user.js has
'use strict'
var User = require('../../models/cr/user');
var bcrypt = require('bcrypt');
var path = require('path');
var fs = require('fs');
and one of the functions is
function getUsers(req, res) {
var find = User.find({}).sort('-firstName');
find.exec((err, users) => {
if (err) {
res.status(500).send({
message: "Error en la peticion"
});
return;
}
if (!users) {
res.status(404).send({
message: "no hay users"
});
return;
}
User.populate(users, {
path: 'publications.categories'
}, (err, users) => {
if (err) {
res.status(500).send({
message: "Error en la peticion"
});
return;
}
if (!users) {
res.status(404).send({
message: "User no encontrado"
});
return;
}
res.status(200).send({
users
});
// var options = {
// path: 'publications.categories',
// select: 'subcategories.name'
// };
// if (err) {
// res.status(200).send({
// users
// });
// }
// User.populate(users, options, function (err, users) {
// res.status(200).send({
// users
// });
// });
});
});
}
module.exports = {
getUser,
getUsers,
saveUser,
updateUser,
deleteUser
}
this method is used by routes/cr/user.js this contains(look the description where is the route and what contains) api.get('/users/', UserController.getUsers);
The link http://localhost:3000/api/users show this
{
"users": [
{
"roles": [
"5ae4a8b0a7510e3bd80917d5"
],
"publications": [],
"_id": "5ae79ee4b34bea810861ccc5",
"firstName": "santiago4",
"lastName": "torres3",
"email": "santiago5020g@hotmail.com4",
"status": "activo",
"password": "$2b$10$rONv8dlZVOMJ4kU1x4XUmuVeTiyl.B.IVrIIlPDHz.0Yuqh5w05wK",
"__v": 0
},
{
"roles": [],
"publications": [
{
"updatedAt": "2018-04-30T03:23:11.921Z",
"categories": [
"5ae4a8b0a7510e3bd80917db",
"5ae4a8b0a7510e3bd80917da"
],
"pictures": [],
"publicationOffers": [],
"_id": "5ae68cbf7cda345ec0b910f3",
"title": "publicacio2",
"description": "descripcion2",
"status": "activo",
"createdAt": "2018-04-30T03:25:51.053Z"
},
{
"updatedAt": "2018-04-30T03:45:14.159Z",
"categories": [
"5ae4a8b0a7510e3bd80917db"
],
"pictures": [],
"publicationOffers": [],
"_id": "5ae692183670e54b9c529698",
"title": "publicacio2",
"description": "descripcion2",
"status": "activo",
"createdAt": "2018-04-30T03:48:40.654Z"
},
{
"updatedAt": "2018-04-30T04:01:23.131Z",
"categories": [
"5ae4a8b0a7510e3bd80917db"
],
"pictures": [],
"publicationOffers": [],
"_id": "5ae6956d9e15516ccceb13d8",
"title": "publicacio2",
"description": "descripcion2",
"status": "activo",
"createdAt": "2018-04-30T04:02:53.177Z"
}
],
"_id": "5ae689f9a67a6284f4af4033",
"firstName": "santiago3",
"lastName": "torres3",
"email": "santiago5020g@hotmail.com3",
"status": "activo",
"password": "$2b$10$ge1lS.r/eV1nJRkQDi4dn.0AQKpJfI.a5GzBlpsN5trHefVRVjVCS",
"__v": 0
},
{
"roles": [],
"publications": [],
"_id": "5ae689f0a67a6284f4af4032",
"firstName": "santiago2",
"lastName": "torres2",
"email": "santiago5020g@hotmail.com2",
"status": "activo",
"password": "$2b$10$HND7lixmr5RT4A/Kz5gv6.it9kmHpauytIHw/UydgTOAwkbNTJf8O",
"__v": 0
},
{
"roles": [],
"publications": [],
"_id": "5ae689e5a67a6284f4af4031",
"firstName": "santiago1",
"lastName": "torres1",
"email": "santiago5020g@hotmail.com1",
"status": "activo",
"password": "$2b$10$.sNgBlSerC6f19Hd2.xnzOtpUAd8BB9JXXM5BlGIvr0dUhWOtn5IS",
"__v": 0
}
]
}
the file controllers/cr/category.js has
'use strict'
var Categories = require('../../models/cr/category');
function getCategories(req, res){
Categories.find({},(err, categories) =>{
if(err){
res.status(500).send({ message: 'Error en la peticion' });
return;
}
if(!categories){
res.status(404).send({ message: 'No hay categories' });
return
}
res.status(200).send({ categories });
});
}
module.exports = {
getCategories
}
this method is used by routes/cr/category.js this contains(look the description where is the route and what contains)
'use strict'
var express = require('express');
var CategoryController = require('../../controllers/cr/category');
var api = express.Router();
var middlewareSecurity = require('../../security/middleware');
api.get('/categories', CategoryController.getCategories );
module.exports = api;
http://localhost:3000/api/categories will show this json
{
"categories": [
{
"subcategories": [
{
"_id": "5ae4a8b0a7510e3bd80917db",
"name": "Decoracion"
},
{
"_id": "5ae4a8b0a7510e3bd80917da",
"name": "Electrodomésticos"
},
{
"_id": "5ae4a8b0a7510e3bd80917d9",
"name": "Cocina"
},
{
"_id": "5ae4a8b0a7510e3bd80917d8",
"name": "Muebles"
}
],
"_id": "5ae4a8b0a7510e3bd80917d7",
"name": "Hogar",
"__v": 0
},
{
"subcategories": [
{
"_id": "5ae4a8b0a7510e3bd80917e0",
"name": "Computador escritorio"
},
{
"_id": "5ae4a8b0a7510e3bd80917df",
"name": "Laptop"
},
{
"_id": "5ae4a8b0a7510e3bd80917de",
"name": "Celulares"
},
{
"_id": "5ae4a8b0a7510e3bd80917dd",
"name": "Tablets"
}
],
"_id": "5ae4a8b0a7510e3bd80917dc",
"name": "Tecnología",
"__v": 0
}
]
}
I need to populate categories of UserSchema referencing subcategories of CategorySchema(See Schemas mentioned before). If you see in the file controllers/cr/user.js there is
User.populate(users, {
path: 'publications.categories'
}, (err, users) => {....
currently the UserSchema contains this
categories: [{
type: Schema.Types.ObjectId,
refPath: 'Category'
}],
I am trying to do something like this
categories: [{
type: Schema.Types.ObjectId,
refPath: 'Category.subcategories'
}],
categories is inside of publications(see schemas mentioned before)
I need to get something like this
"publications": [
{
...
"categories": [
{
"_id": "5ae4a8b0a7510e3bd80917db",
"name": "subcategory1"
},
{
"_id": "5ae4a8b0a7510e3bd80917da",
"name": "subcategory2"
}
]
},
{
....
"categories": [
{
"_id": "5ae4a8b0a7510e3bd80917e0",
"name": "subcategory1"
}
]
},
]
but it's showing me this in publications of UserSchema
"publications": [
{
...
"categories": [
"5ae4a8b0a7510e3bd80917db",
"5ae4a8b0a7510e3bd80917da"
]
},
{
...
"categories": [
"5ae4a8b0a7510e3bd80917e0"
]
},
]
publications is inisde of UserSchema(see UserSchema mentioned before)
this is the link to download the reporsitory where is the project link of reporsitory
Please help me whith this. I have been searching and trying a lot of things whithout success. I can't find a solution in the documentation, stackoverflow and other websites. Nothing works. I tried to use dinamic references of mongoose and that does not work. I tried to use this. https://github.com/buunguyen/mongoose-deep-populate
And I tried a lot of thing and none of them works. Please Help me!. I am a worry about it.
来源：https://stackoverflow.com/questions/50139312/populate-nested-array-of-nested-ref