I have a collection called Orders that contains this schema:
const mongoose = require('mongoose');
const orderSchema = new mongoose.Schema({
user: {
type: mongoose.Schema.Types.ObjectId,
ref: 'User',
required: true
},
restaurant: {
type: mongoose.Schema.Types.ObjectId,
ref: 'Restaurant',
required: true
},
dishes: [
{
dish: {
type: mongoose.Schema.Types.ObjectId,
ref: 'Dish'
},
amount: Number
}
],
price: {
type: Number,
required: true
},
comment: {
type: String,
required: false
},
status: {
type: String,
enum: ['PROCESSING', 'CANCELLED', 'COMPLETED', 'ERROR'],
default: 'PROCESSING'
},
timestamp: {
type: Date,
default: Date.now
}
})
module.exports = mongoose.model('Order', orderSchema);
Inside my router, I have this code:
let orders = await Order.find({restaurant: restaurantID, status:'PROCESSING'}).populate('dishes._id').exec()
Order.find does not throw an exception, but it isnt working either.
I want the res.body to look like this:
{
"_id": "objectID",
"user": "objectID",
"restaurant": "objectID",
"dishes": [
{
"amount": number,
"dish": {
//dish object
}
},
...
],
//other order properties
},
...
]
But for some reason the dishes array looks like this:
"dishes": [
{
"amount": 1,
"_id": "6184e848e6d1974a0569783d"
}
],
What am I doing wrong?
I know that if populate() worked the res.body dishes array would not have a property called 'dish' and instead have a property called _id that would contain the dish object, but this shouldnt be hard to change once populate() works.
EDIT:
I realised that my createOrder route could be part of the problem since it ignores my schema and uses an id property for the objectID instead of dish. The array I save to the DB contains a property called id for the id instead of dish, but shouldnt my schema throw an exception when i try to save something like this to my database?
At first glance, I think the problem might be that you have a syntax problem.
Try
.populate('dishes').exec()
instead of
.populate('dishes._id').exec()
Related
I have an update call as below in my NestJs project to update a mongoose model.
async updateRole(role_id: ObjectId, request: any): Promise<any> {
return this.roleModel.findByIdAndUpdate(role_id, {...request});
}
Here is the request I'm passing
{
"name":"Super-Admin",
"application": "62b2dbfd82045f40ea884334",
"active":true,
"privileges": ["62b2dbfd82045f40ea884334","62b2dbfd82045f40ea884334"],
"updated_by": "Abhilash.Shajan1#gmail.com"
}
Below is my role schema
import * as mongoose from 'mongoose';
const Schema = mongoose.Schema;
const RoleSchema = new Schema({
name: {
type: String,
required: true
},
application: {
type: Schema.Types.ObjectId,
ref: 'Application',
autopopulate: true,
required: true
},
active: {
type: Boolean,
required: true
},
privileges: [{
type: Schema.Types.ObjectId,
ref: 'Privilege',
autopopulate: true
}],
created_by: {
type: String
},
created_at: {
type: Date
},
updated_by: {
type: String
},
updated_at: {
type: Date
}
});
RoleSchema.index( { name: 1, application: 1 }, { unique: true } );
export { RoleSchema };
I already created a document (This is the only document now present in the roles collection) with the above request. Now I'm trying to update its active field to true.
Since i have unique compound index in the schema, it does not allow me to update the active field, I'm getting unique contraint error on both application and name field.
This error will be meaningful if i have another document with same name and application in the collection, but there is not.
Another way is to pass the active field alone in the request. But it will not help in my case because the UI is always passing the whole fields which include the unchanged values as well.
Any suggestions ?
I am developing a server using Expressjs, Mongodb and Mongoose. I need to push an element (a string) into the "tweets" array which is inside an object (a friend) which is in turn inside the "friends" array which is inside a "user" Object which document in the "users" collection. Here is an example of how my documents in the Mongodb collection looks like:
{
"loggedIn": true,
"_id": "5f91ef0ce75d3b1d40539da0",
"username": "username",
"email": "a#h.com",
"password": "$2a$10$9krWS9Kq5024lRTexqaweePrn8aughepqTkaj3oA48x0fJ2ajd79u",
"dateOfBirth": "2002-12-07",
"gender": "male",
"friends": [
{
"tweets": [],
"_id": "5f91effae75d3b1d40539da7",
"username": "Jonas"
},
],
"__v": 0
}
I need to pick the specified username from the "Users" arrary first and then access "friends" array within this user and then pick the right friend object and finally push the tweet on $position: 0 in this array. I I tried to achieve that as shown in this code and I could access the friend object with the given friendUsername
await Users.updateOne(
{ username: req.params.username },
{
$push: {
friends: {
$elemMatch: {
username: req.params.friendUsername,
},
},
},
}
);
And now the question is how to access the "tweets" array inside $elemMatch and push the req.body.tweet at $position: 0 into it?
Here is how I would solve your issue, I first would re-define the way I am defining schemas.
My User schema would look something like the following
User.js
const mongoose = require('mongoose')
const UserSchema = mongoose.Schema({
...
friends: {
type: [{
type: mongoose.Schema.Types.ObjectId,
ref: 'User'
}],
required: true,
default: []
},
tweets: {
type: [{
type: mongoose.Schema.Types.ObjectId,
ref: 'Tweet'
}],
required: true,
default: []
},
...
}, {timestamps: true})
module.exports = mongoose.model('User', UserSchema)
User.js
const mongoose = require('mongoose')
const TweetSchema = mongoose.Schema({
...
text: {
type: String,
required: true
},
tweeter: {
type: mongoose.Schema.Types.ObjectId,
required: true,
ref: 'User'
},
likes: {
type: [{
type: mongoose.Schema.Types.ObjectId,
ref: 'User'
}],
required: true,
default: []
},
...
}, {timestamps: true})
module.exports = mongoose.model('Tweet', TweetSchema)
This assumes that every user can have tweets and that a User can be friend with another User
And now if someone tweets something you can do something like
const Tweet = require('./Tweet.js')
const User = require('./User.js')
let tweet = new Tweet({
text: "My first tweet!",
tweeter: "ID Of user who is posting the tweet"
})
tweet.save()
// Now update the user who tweeted
User.findOneAndUpdate()
User.updateOne({ _id: "ID Of user who is posting the tweet" }, { $push: { tweets: tweet._id } })
and now whenever you request a user all of his friends will be referenced and all of their tweets will also be referenced! if you want to see the actual tweets then use something like .populate() here are the docs for .populate() https://mongoosejs.com/docs/populate.html
Keep in mind is really a good practice to only return the actual ids and your frontend takes care of requesting the appropriate objects from their perspective endpoints. And if you wish to reduce network calls then the frontend would cache the data.
If the above doesn't help and you still would like to achieve your goal with your schemas then something like this should work (assuming your schema is called User)
let tweetObj = {}
User.updateOne({_id: 'your userid'}, {$push: {"friends.$.tweets": tweetObj}})
NOTE: I have omitted callbacks as they are irrelevant to the question
Background
Here's part of my User model:
const Group = require("./Group")
...
groups: {
type: [{ type: Schema.ObjectId, ref: Group }],
default: [],
},
And here's my Group model:
module.exports = mongoose.model(
"Group",
new Schema(
{
name: {
type: String,
required: true,
unique: true,
},
/**
* Array of User ObjectIDs that have owner rights on this group
*/
owners: {
type: [{ type: Schema.ObjectId, ref: User }],
default: [],
},
},
{
timestamps: true,
}
)
)
The Code
Here's the code I'm running to try and populate:
const user = await (await User.findOne({ _id: ... })).execPopulate("Group")
console.log(user.groups)
My console.log is outputting an array of object IDs, when I'd like it to output an actual Group document.
Attempted solutions
I've tried changing my ref to be using the string ("Group"), I've tried arranging my query differently, etc. I'm not sure how I'd go about doing this.
Apologies in advance if this is a duplicate, I've done my best to search but can't really find a solution that works for me.
Specifically, what do I need help with?
I'm trying to create a 'link' between a user model and a group model. In my console.log, I expect it to output a Group document; but it outputs an object ID (which is how it's stored raw in the database, meaning that Mongoose isn't transforming it correctly)
When you change execPopulate to populate like:
async function findUserAndPopulate(userId){
const response = await User.findOne({
_id: userId,
}).populate('groups')
console.log("response",response)
}
You got:
{
groups: [
{
owners: [Array],
_id: 5ecc637916a2223f15581ec7,
name: 'Crazy',
createdAt: 2020-05-26T00:31:53.379Z,
updatedAt: 2020-05-26T00:31:53.379Z,
__v: 0
}
],
_id: 5ecc6206820d583b99b6b595,
fullname: 'James R',
createdAt: 2020-05-26T00:25:42.948Z,
updatedAt: 2020-05-26T00:36:12.186Z,
__v: 1
}
So you can access the user.groups
See the doc: https://mongoosejs.com/docs/populate.html
I'm trying to save an object that references other 2 objects in mongoDB, but I'm not getting it. Whenever I try, I get this message.
For this, this using POSTMAN to test the API that I am creating.
{
"message": "Order validation failed: payments.0.credit_card.card: Cast to ObjectID failed for value \"{ number: '4898308633754712',\n holder_name: 'Test test',\n exp_month: 1,\n exp_year: 2022,\n cvv: '1234' }\" at path \"credit_card.card\", customer: Cast to ObjectID failed for value \"{ name: 'Test Test', email: 'test#gmail.com' }\" at path \"customer\""
}
The json object I'm trying to save in mongoDB:
{
"items": [{
"name": "Plano s",
"amount": 12345,
"description": "Descrição do Plano Sanarflix",
"quantity": 1
}],
"customer": {
"name": "Test Test",
"email": "test#gmail.com"
},
"payments": [{
"payment_method": "credit_card",
"credit_card": {
"installments":1,
"capture": true,
"card": {
"number": "4898308633754712",
"holder_name": "Test Test",
"exp_month": 1,
"exp_year": 2022,
"cvv": "1234"
}
}
}]
}
This is the model order I defined:
'use strict';
const mongoose = require('mongoose');
const Schema = mongoose.Schema;
// Model for order
const schema = new Schema({
customer: {
type: mongoose.Schema.Types.ObjectId,
ref: 'Customer',
required: function(){
return this.customer_id;
}
},
items: [{
amount: {
type: Number,
required: true
},
description: {
type: String,
trim: true
},
quantity: {
type: Number,
required: true
}
}],
payments: [{
payment_method: {
type: String,
required: true,
trim: true
},
credit_card: {
installments: {
type: Number,
default: 1
},
capture: {
type: Boolean,
default: true
},
card: {
type: mongoose.Schema.Types.ObjectId,
ref: 'Card'
}
},
}]
});
module.exports = mongoose.model('Order', schema);
What is wrong with it? Because when I import the same json to MongoDB with Studio3 Mongo Manager, I can save it and see the object in the correct way.
an object that references other 2 objects, yes, ObjectId does references, yet you're passing the whole objects.
Three options:
pass the id of customer and card objects (if they exist already)
insert these new data in their respective collections then insert your order using the created IDs (likely the solution)
rewrite your schema to have only the Order collection that would hold everything (not really great).
Also, having card numbers transiting through your server is really dangerous (legally speaking), especially if you're to store them... check out how the payment service you're implementing handles transactions: on any decent service the server never sees banking data, discharging your company of any liability.
I have an upsert query in mongoose which was working in 3.8 but, after I've upgraded to 4 I'm getting
Unable to invalidate a subdocument that has not been added to an array
this is my model:
var ActivitySchema = new Schema({
owner:{
type: Schema.Types.ObjectId,
ref: 'User'
},
sequence:{
type:Number,
default: 0
},
items:[
{
posted:{
type:Date,
default:Date.now
},
verb:{
type: String,
enum: [ 'leave','join','support','share','comment', 'upload', 'rate','message','update', 'signup']
},
text:{
type: String,
},
reference: {
objectType:{
type: String,
enum: [ 'document','element','process', 'project', 'user']
},
refObj:{}
}
}]
});
the upsert:
Activity.update({
$and:[
{'owner':ownerId},
{'sequence':bucket}
]},
{
$push:{items:newItem }
},
{
upsert:true
}).execAsync();
and the data is like this:
//newItem
{ verb: 'join',
text: 'Has joined to a team',
reference:
{
refObj: { teamId: '56269fd1e923cc7a7b46dcf8', name: 'test1' },
objectType: 'user'
}
}
ownerId is a mongoId like 56251c01507dc35423694118
and bucket is an integer 0
is there any breacking change that I need to be aware?, I've been looking and I haven't found yet related, any other workaround, solution?
I had encountered the same problem, if it is the same case then make sure all fields type are matched to the mongoose.model('yourModel').
Hopes that helps.