I have a schema:
var userSchema = new Schema({
name: String,
username: { type: String, required: true, unique: true },
password: { type: String, required: true },
admin: Boolean,
created_at: Date,
updated_at: Date
});
Let's assume I have made 100 Users using this schema.
Now I want to change the schema:
var userSchema = new Schema({
name: String,
username: { type: String, required: true, unique: true },
password: { type: String, required: true },
admin: Boolean,
created_at: Date,
friends: [Schema.Types.ObjectId], //the new addition
updated_at: Date
});
I need all new Users to have this field. I also want all of the 100 existing Users to now have this field. How can I do this?
You can use Mongoose Model.update to update all your documents in the collection.
User.update({}, { friends: [] }, { multi: true }, function (err, raw) {
if (err) return handleError(err);
console.log('The raw response from Mongo was ', raw);
});
I don't recommend to do it in production if the collection is big, since it is a heavy operation. But in your case it should be fine.
Using the query interface in a client app or your terminal you could do:
db.users.updateMany({
$set: { "friends" : [] }
});
Here's the docs reference.
it doesn't work for me :x
Here is my code
let test = await this.client.db.users.updateMany({
$set: { "roles" : [] }
});
and the output
{ ok: 0, n: 0, nModified: 0 }
I don't know how to do, i tried a lot of things and uh it doesn't work :'(
EDIT: I found, here is my code
await this.client.db.users.updateMany({ }, [ {$set : { "roles": []} } ]);
Related
I have taken this schema from Here
var mongoose = require('mongoose');
var ContactSchema = module.exports = new mongoose.Schema({
name: {
type: String,
required: true
},
phone: {
type: Number,
required: true,
index: {unique: true}
},
messageCount: {
type: Number,
required: true,
default:0
},
messages: [
{
title: {type: String, required: true},
msg: {type: String, required: true}
}]
}, {
collection: 'contacts',
safe: true
});
I can push message by doing this
let result = await Contact.findByIdAndUpdate(
id,
{$push: {"messages": {title: title, msg: msg}}},
{new : true})
But I want to increase messageCount also in single step where
messageCount can be random also but point is to push and update
I am expecting both message and messageCount to update in single query using any mongoose functions
After Looking to This Post and tried on my doubt
let result = await Contact.findByIdAndUpdate(
id,
{
messageCount:10
$push: {"messages": {title: title, msg: msg}}
},
{
new : true
}
)
I'm using mongoose to connect to MongoDB and I have a doubt about how can I make a query between two related collections
I have these Schemas.
const users = new mongoose.Schema({
name: String,
lastname: String,
age: Number,
comments: [
{
type: mongoose.Schema.Types.ObjectId,
ref: 'Comments',
}
],
}, { timestamp: true, strict: false });
const comments = new mongoose.Schema({
message: {
type: String,
},
description: {
type: String,
},
candidates: Number,
}, { timestamp: true, strict: false });
well, the idea is get all users that contains comments with candidates value > 100
Is this possible to do just one query that will return the users that have comments with that condition?
TIA !
I have two collections User and UserType :-
var User = new mongoose.Schema({
username: {
type: String,
required: true,
},
userType: {
type: ObjectId,
ref: "UserType",
required: true,
},
});
var UserTypeSchema = new mongoose.Schema(
{
type: String,
type_code: Number,
type_description: String,
},
{ timestamps: true }
);
I want to search user based on username and typecode which is in UserType Collection.
I tried this code: -
User.findOne({
username: mobileNumber,
userType: { type_code: userTypeCode },
})
.populate("userType");
please correct this query.
you must to filter out populate results, with match option
In your case answer would be::
User.findOne({
username: mobileNumber,
}).populate({
path: "userType",
match: { type_code: userTypeCode },
});
you can check the documentation
I have a user model schema, a work model schema, and a critique model schema. The relationship between these schema's is a user can submit many works (like blog posts), and can comment/review (which we call critiques) other people's posts (works).
So when a user submits a critique (think of it like a review), this is my post route. I find the work by the id, then create a new critique model object, and pass that to the .create() mongoose function. All goes seemingly well until I hit the foundWork.critiques.push(createdCritique) line. the console log errors out saying:
BulkWriteError: E11000 duplicate key error collection: zapper.critiques index: username_1 dup key: { : null }
Obviously, it is saying that there are two username keys in the objects and they're conflicting with each other, but I'm not familiar enough with this to find the root of the issue and fix it in the mongoose models. The models are below. If anyone could help, that'd be greatly appreciated.
// post route for getting the review
router.post('/:id', isLoggedIn, function(req, res) {
Work.findById(req.params.id, function(err, foundWork) {
if (err) {
console.log(err);
} else {
// create a new critique
var newCritique = new Critique ({
reviewerName: {
id: req.user._id,
username: req.user.username
},
work: {
id: foundWork._id,
title: foundWork.title
},
critique : req.body.critique,
date: Date.now(),
rating: 0
});
// save new critique to db
Critique.create(newCritique, function(err, createdCritique) {
if (err) {
console.log(err)
} else {
console.log("Created critique is ");
console.log(createdCritique);
// push the new critique into array of critiques of the work
foundWork.critiques.push(createdCritique);
// save to db
foundWork.save();
}
});
}
});
User model:
var mongoose = require('mongoose');
var passportLocalMongoose = require('passport-local-mongoose');
var UserSchema = new mongoose.Schema({
firstname: String,
lastname: String,
username: String,
password: String,
email: String,
zip: String,
bio: {
type: String,
default: ''
},
influences: {
type: String,
default: ''
},
favBooks: {
type: String,
default: ''
},
notWriting: {
type: String,
default: ''
},
favHero: {
type: String,
default: ''
},
favVillain: {
type: String,
default: ''
},
works: [
{
type: mongoose.Schema.Types.ObjectId,
ref: 'Work'
}
],
critiques: [
{
type: mongoose.Schema.Types.ObjectId,
ref: 'Critique'
}
],
friends: [
{
friendId: String,
friendName : String,
friendPic: String
}
],
friendRequests: [
{
sendingFriendId: String,
sendingFriendName : String,
sendingFriendPic: String
}
],
createdDate: {
type: Date,
default: Date.now
},
lastLogin: {
type: Date,
default: Date.now
}
});
UserSchema.plugin(passportLocalMongoose);
module.exports = mongoose.model("User", UserSchema);
Work model:
var mongoose = require('mongoose');
var WorkSchema = new mongoose.Schema({
title: String,
genre: String,
workType: String,
length: Number,
ageRange: String,
author: {
id: {
type: mongoose.Schema.Types.ObjectId,
ref: "User"
},
username: String
},
manuscriptText: String,
critiques: [
{
id: {
type: mongoose.Schema.Types.ObjectId,
ref: "Critique"
}
}
],
ratingNumber: [Number],
ratingSum: {
type: Number,
default: 0
},
date: {
type: Date,
default: Date.now
},
isPublic: {
type: Boolean,
default: true
}
});
module.exports = mongoose.model("Work", WorkSchema);
Critique model:
var mongoose = require('mongoose');
var passportLocalMongoose = require('passport-local-mongoose');
var CritiqueSchema = new mongoose.Schema({
reviewerName: {
id: {
type: mongoose.Schema.Types.ObjectId,
ref: "User"
},
username: String
},
work: {
id: {
type: mongoose.Schema.Types.ObjectId,
ref: "Work"
},
title: String
},
critique: String,
date: {
type: Date,
default: Date.now
},
rating: [Number]
});
CritiqueSchema.plugin(passportLocalMongoose);
module.exports = mongoose.model("Critique", CritiqueSchema);
When you create a unique index in MongoDB, the default behavior is that it will index null values also.
This means if you have a document in your collection with a username of null, you can not add another one with a username of null.
What you need is a sparse index which only indexes actual values (and ignores documents with null for that field).
Check this link It shows how to create a sparse index vs "normal" one in mongoose (index: true, vs spare: true). Most of the time you would want sparse indexes.
I have this schema
var ArticleSchema = new Schema({
user_id: { type: Schema.ObjectId, ref: "User"},
title: String,
description: String,
content: String,
visible: Boolean,
saved: Boolean,
deleted: {type: Boolean, default: false },
permalink: String,
created_at: { type: Date, default: Date.now },
edited_at: { type: Date, default: Date.now },
tags : [],
comments: {
comment: String,
name: String,
email: String,
date: Date,
deleted: Boolean,
}
});
I want to update the deleted field into the comments array for a specific array.
Here is how I'm doing it.
this.model.update(
{
_id: data.articleId
},
{
$set: { 'comments.$.deleted' : true }
},
function(err, doc){
console.info(doc);
console.info(err);
callback(doc);
});
};
Nothing happens, I tried directly on mongo console and it works.
But not in mongoose. For any reason I got in console.info(), null and 0 as results. The document is never updated.
If I try to update other value not nested it works.
You could try the following:
this.model.update(
{
_id: data.articleId
},
{
$set: { 'comments.deleted' : true }
},
function(err, doc){
console.info(doc);
console.info(err);
callback(doc);
});
};
Your code is not working because the comments field is not an array but an embedded sub-document and the $ positional operator only identifies an element in an array to update without explicitly specifying the position of the element in the array.