I have a little question. I have a User schema which contains a table fields redirecting to the Table schema.
A Table element can contain a name, I want this name to be unique per User but not between User.
Example:
User1 -> Table1.name: "foo"
User2 -> Table1.name: "foo"
But this User1 -> Table2.name: "foo" cannot be possible.
This is the User Schema:
var UserSchema = new mongoose.Schema({
username: { type: String, required: true, index: {
unique: true } },
email: { type: String, required: true, index: {unique: true } },
password: { type: String, required: true },
tables: [{ type: Schema.Types.ObjectId, ref: 'Table' }],
resetPasswordToken: String,
resetPasswordExpires: Date,
uuid: String,
});
This is the Table schema:
var TableSchema = Schema({
name: { type: String, required: true, index: { unique: true }},
logos: [{ type: Schema.Types.ObjectId, ref: 'Logo'}],
});
And this is where I do the queries:
app.post('/newTab', function(req, res){
var use = req.user.username;
var newTab = new Table({
name: req.body.name,
});
newTab.save(function(err, docs){
if (err)
{
console.error(err);
res.writeHead(500);
res.end();
}
else
{
User.findOne({username: req.user.username}, function(err, docs) {
if(err) {throw (err);}
else
{
docs.tables.push(newTab);
docs.save(function(err, docs){
if (err) return console.error(err);
res.writeHead(200);
res.end(userId);
});
}
});
}
});
For now, I cannot add the same table name for two different User ..
I also tried something with sparse index but can't figure how it works
Related
I'm attempting to do partial search in my mongoose database for city names.
This is how I have Trips defined.
const mongoose = require('mongoose');
const TravelSchema = new mongoose.Schema({
creator: {
type: mongoose.Schema.Types.ObjectId,
ref: 'User'
},
numPeople: {
type: Number,
required: true
},
startDate: {
type: Date,
required: true
},
endDate: {
type: Date,
required: true
},
destination: [{
city: {type: String, required :true},
state: {type: String, required:true }
}],
budget :[{
travelCost: {type: Number},
foodCost: {type: Number},
lodgingCost: {type: Number},
miscellaneousCost: {type: Number}
}]
});
module.exports = mongoose.model('Trips', TravelSchema);
No matter what I try, aggregate is not giving me any results (not even an error) and I have no idea why.
This is what my search looks like. Ideally the Trip.aggregate I have commented out would work but even the simple one is not giving any output
const router = require('express').Router();
const mongoose = require('mongoose');
let Trip = require('../models/Trips');
/*Trip.aggregate([
//{ $project : {'destination' : 1}},
{ $unwind : "$destination"},
/*{
$match: {
'destination.city' :{
"$regex" : new RegExp(req.body.city), "$options" : "i"
}
}
}
]),function(err,results){
console.log(err);
console.log(results);
console.log("Im in here2");
}*/
router.post('/', (req, res, next) => {
console.log("Im in here");
Trip.aggregate([{
$match: {
numPeople: {
$gt: 0,
$lt: 10
}
}
}]),
function(err, results) {
if (err)
console.log(err);
console.log(results);
}
})
module.exports = router;
I know I have things in the database with those fields and I should get a result for the age.
Here is some of the data in my mongodb.
MongoSC
I'm trying to populate my post's author fields (which is are object ids) with the corresponding author objects which are in a separate collection.
My controller code is as follows:
exports.readPosts = async (req, res) => {
try {
const posts = await Post.find({ board: req.params.board });
await posts.populate("author").execPopulate();
res.send(posts);
} catch (err) {
res.status(400).send(err.message);
}
};
I'm at a loss as to why this isn't working as I have very similar code in another controller method that is working just fine.
All help greatly appreciated.
Below is the relevant Model file:
const mongoose = require("mongoose");
const postSchema = new mongoose.Schema(
{
title: {
type: String,
required: true,
trim: true,
},
content: { type: String, required: true, trim: true },
comments: [
{
comment: {
type: String,
required: true,
trim: true,
},
user: {
type: mongoose.Schema.Types.ObjectId,
ref: "User",
},
date: {
type: Date,
default: Date.now(),
},
},
],
author: {
type: mongoose.Schema.Types.ObjectId,
required: true,
ref: "User",
},
board: {
type: mongoose.Schema.Types.ObjectId,
required: true,
ref: "Board",
},
},
{ timestamps: true }
);
const Post = mongoose.model("Post", postSchema);
module.exports = Post;
posts is an array of models. populate must be called on a model. The preferred way to do this is at query time. It probably works on your other controller because you are using a findOne so it is returning the model, not the Array.
const posts = Post
.find({ board: req.params.board })
.populate('author')
.exec();
The following piece of code which works fine. However,when I run it again from my cmd(node server),I get a duplicate key message of the dish name. I have two files. The dishes.js where I define my schemas and make available to my second file called server.js.
dishes
// grab the things we need
var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var commentSchema = new Schema({
rating: {
type: Number,
min: 1,
max: 5,
required: true
},
comment: {
type: String,
required: true
},
author: {
type: String,
required: true
}
}, {
timestamps: true
});
// create a schema
var dishSchema = new Schema({
name: {
type: String,
required: true,
unique: true
},
description: {
type: String,
required: true
},
comments:[commentSchema]
},
{
timestamps: true
});
// the schema is useless so far
// we need to create a model using it
var Dishes = mongoose.model('Dish', dishSchema);
// make this available to our Node applications
module.exports = Dishes;
and my server.js file.
var mongoose = require('mongoose'),
assert = require('assert');
var Dishes = require('./models/dishes-3');
// Connection URL
var url = 'mongodb://localhost:27017/conFusion';mongoose.connect(url);
var db = mongoose.connection;
db.on('error', console.error.bind(console, 'connection error:'));
db.once('open', function () {
// we're connected!
console.log("Connected correctly to server");
// create a new dish
Dishes.create({
name: 'Uthapizza',
description: 'Test',
comments: [
{
rating: 3,
comment: 'This is insane',
author: 'Matt Daemon'
}
]
}, function (err, dish) {
if (err) throw err;
console.log('Dish created!');
console.log(dish);
var id = dish._id;
// get all the dishes
setTimeout(function () {
Dishes.findByIdAndUpdate(id, {
$set: {
description: 'Updated Test'
}
}, {
new: true
})
.exec(function (err, dish) {
if (err) throw err;
console.log('Updated Dish!');
console.log(dish);
dish.comments.push({
rating: 5,
comment: 'I\'m getting a sinking feeling!',
author: 'Leonardo di Carpaccio'
});
dish.save(function (err, dish) {
console.log('Updated Comments!');
console.log(dish);
db.collection('dishes').drop(function () {
db.close();
});
});
});
}, 3000);
});
});
If you pay a close attention in the server.js file I have removed the unique: true attribute from by dishes.js file,but I still have the same problem.
name: {
type: String,
required: true,
unique: true
},
when your schema is given below
name: {
type: String,
required: true,
unique: true
}
the unique is working
when your schema is given below
name: {
type: String,
required: true
}
the unique not working
after change your schema definition, drop all your collection and try to insert.
I am trying to populate my users car inventory. All the cars have a userId attached to them when they are created but when I go to populate the inventory it doesn't work and I get no errors.
Here are my models:
User.js
let UserSchema = mongoose.Schema({
username: {
type: String,
required: true,
unique: true
},
password: {
type: String,
required: true
},
inventory: [{ type: mongoose.Schema.Types.ObjectId, ref: 'Car' }]
});
let User = mongoose.model('User', UserSchema);
models.User = User;
Cars.js
let CarSchema = mongoose.Schema({
userId: {
type: mongoose.Schema.Types.ObjectId,
ref: 'User'
},
make: {
type: String,
required: true
},
model: {
type: String,
required: true
},
year: {
type: String
}
});
let Car = mongoose.model('Car', CarSchema);
models.Car = Car;
Here is the populate code:
router.route('/users/:user/inventory').get((req, res) => {
User.findById(userId)
.populate('inventory')
.exec((err, user) => {
if (err) {
console.log("ERRROORRR " + err)
return res.send(err);
}
console.log('Populate ' + user)
res.status(200).json({message: 'Returned User', data: user});
});
});
};
This is what a car object looks like in the database:
{
"_id": ObjectId("5759c00d9928cb581b5424d0"),
"make": "dasda",
"model": "dafsd",
"year": "asdfa",
"userId": ObjectId("575848d8d11e03f611b812cf"),
"__v": 0
}
Any advice would be great! Thanks!
Populate in Mongoose currently only works with _id's, though there's a long-standing issue to change this. You'll need to make sure your Car model has an _id field and that the inventory field in User is an array of these _id's.
let CarSchema = new mongoose.Schema(); //implicit _id field - created by mongo
// Car { _id: 'somerandomstring' }
let UserSchema = new mongoose.Schema({
inventory: [{
type: mongoose.Schema.Types.ObjectId,
ref: 'Car'
}]
});
// User { inventory: ['somerandomstring'] }
User.populate('inventory')
I'm learning MeanJS and I have problem with Mongoose. I have two models:
var CategorySchema = new Schema({
name: {
type: String,
default: '',
required: 'Please fill Category name',
trim: true
},
slug: {
type: String,
default: '',
trim: true,
unique: true
},
created: {
type: Date,
default: Date.now
},
user: {
type: Schema.ObjectId,
ref: 'User'
},
articles: [{
type: Schema.ObjectId,
ref: 'Article'
}]
});
var ArticleSchema = new Schema({
created: {
type: Date,
default: Date.now
},
category: {
type: Schema.ObjectId,
ref: 'Category'
},
title: {
type: String,
default: '',
trim: true,
required: 'Title cannot be blank'
},
slug: {
type: String,
default: '',
trim: true,
unique: true
},
content: {
type: String,
default: '',
trim: true
},
user: {
type: Schema.ObjectId,
ref: 'User'
}
});
I'm saving articles like this:
exports.create = function(req, res) {
var article = new Article(req.body);
article.user = req.user;
article.save(function(err) {
if (err) {
return res.status(400).send({
message: errorHandler.getErrorMessage(err)
});
} else {
Category.findById(article.category).exec(function(err, category) {
category.articles.push(article.category);
category.save(function(err, category) {
if (err) {
return res.status(400).send({
message: errorHandler.getErrorMessage(err)
});
} else {
res.json(article);
}
});
});
}
});
};
and it's saving properly. The object looks like this:
{
"_id" : ObjectId("55b73bf97aa70c2c083655b0"),
"user" : ObjectId("55b115f35c7a03cc0e59d821"),
"articles" : [
ObjectId("55b73c017aa70c2c083655b2"),
ObjectId("55b73ee20bab5e8c0c7eadca")
],
"created" : ISODate("2015-07-28T08:23:21.562Z"),
"slug" : "motocycles",
"name" : "Motocycles",
"__v" : 2
}
and even when I'm counting records like {{ category.articles.length }} it's proper amount of articles in category and I can even print ObjectIds in the view. But when I add .populate('articles') like this:
exports.list = function(req, res) {
Category.find().sort('-created').populate('user', 'displayName').populate('articles').exec(function(err, categories) {
if (err) {
return res.status(400).send({
message: errorHandler.getErrorMessage(err)
});
} else {
res.jsonp(categories);
}
});
};
the length returns 0, ObjectIds disapears and I have no access to article properties just like there was no articles in category. Any ideas why is that happening?
Additional edit:
mongoose.model('Article', ArticleSchema);
mongoose.model('Category', CategorySchema);
It seems that the problem was with create function. I've changed few things and it started working:
exports.create = function(req, res) {
var article = new Article(req.body);
article.user = req.user;
article.save(function(err, savedArticle) {
if (err) {
return res.status(400).send({
message: errorHandler.getErrorMessage(err)
});
} else {
Category.findById(article.category).exec(function (err, category) {
category.articles.push(savedArticle);
category.markModified('articles');
category.save(function (err, category) {
if (err) {
return res.status(400).send({
message: errorHandler.getErrorMessage(err)
});
} else {
res.json(savedArticle);
}
});
});
}
});
};
I'm curious why it wasn't working even though Category object had proper Article ObjectId's.
First, some changes with regard to variables,schema instances and using ObjectId(The mongoose documentation isn't the best).
var categorySchema = new mongoose.Schema({
name: {
type: String,
required: 'Please fill Category name',
trim: true
},
slug: {
type: String,
trim: true,
unique: true
},
created: {
type: Date,
default: Date.now
},
user: {
type: mongoose.Types.Schema.ObjectId,
ref: 'User'
},
articles: [{
type: mongoose.Types.Schema.ObjectId,
ref: 'Article'
}]
});
var articleSchema = new mongoose.Schema({
created: {
type: Date,
default: Date.now
},
category: {
type: mongoose.Types.Schema.ObjectId,
ref: 'Category'
},
title: {
type: String,
trim: true,
required: 'Title cannot be blank'
},
slug: {
type: String,
trim: true,
unique: true
},
content: {
type: String,
trim: true
},
user: {
type: mongoose.Types.Schema.ObjectId,
ref: 'User'
}
});
You need to export your models if you are using an MV* pattern with separate files for separate concerns. So...
exports.method = mongoose.model('Category',categorySchema);
exports.otherMethod = mongoose.model('Article',articleSchema);
. method and .otherMethod are from nodejs. Not sure about express equivalent or what express itself uses.
Then just name this file and require it using its path.