How to populate 2 ids in an object of an array Mongoose - mongodb

I want to populate productId and distributor.
following is the array in my schema:
products: [
{
productId: {
type: String,
required: true,
ref: 'companyProduct'
},
quantity: {
type: String,
required: true,
},
distributor: {
type: String,
required: true,
ref: 'distributor'
}
}
],

Related

how to use nested object as a ref in mongoose

I have two schemas user and note-
user schema
import mongoose from 'mongoose';
const userSchema = mongoose.Schema({
id: {
type: String,
},
name: {
type: String,
required: true,
},
email: {
type: String,
required: true,
unique: true,
},
password: {
type: String,
required: true,
},
notes: [
{
type: mongoose.Types.ObjectId,
ref: 'Note',
},
],
folders: {
type: [
{
name: {
type: String,
},
notes: [
{
type: mongoose.Types.ObjectId,
ref: 'Note',
},
],
},
],
default: [
{ name: 'My Notes', notes: [] },
{ name: 'Todos', notes: [] },
{ name: 'Projects', notes: [] },
{ name: 'Journals', notes: [] },
{ name: 'Reading list', notes: [] },
],
},
});
const User = mongoose.model('User', userSchema);
export default User;
note schema
import mongoose from 'mongoose';
const noteSchema = new mongoose.Schema({
id: {
type: String,
required: true,
},
modify_date: {
type: String,
required: true,
},
modify_time: {
type: String,
required: true,
},
tags: [
{
id: {
type: String,
required: true,
},
text: {
type: String,
required: true,
},
},
],
created_by: {
type: mongoose.Types.ObjectId,
ref: 'User',
required: true,
},
folder: {
type: String, //can I use ref from user?
},
title: {
type: String,
},
body: {
type: String,
required: true,
},
time_stamp: {
type: Date,
required: true,
},
});
const Note = mongoose.model('Note', noteSchema);
export default Note;
I have searched but could not find anything. I want to use the nested folder object from user schema as a ref in note schema; so, whenever I change or update a folders name all the notes get the updated value. Is it possible?
If not should I make a separate folder schema and add ref of folder schema in both note and user? How can I achieve that, any suggestion might be very helpful?

How to get SQL's "AND" operator behavior in mongoose

const ItemSchema = new mongoose.Schema({
categoryId: {
type: mongoose.Types.ObjectId,
required: true,
ref: 'Category'
},
companyId: {
type: mongoose.Types.ObjectId,
required: true,
ref: 'Company'
},
name: {
type: String,
required: true
}
})
const CategorySchema = new mongoose.Schema({
name: {
type: String,
required: true,
},
displayOrder: {
type: Number,
required: true,
},
description: {
type: String
}
});
const companySchema = new mongoose.Schema(
{
name: {
type: String,
required: true,
},
email: {
type: String,
required: true
},
address: {
address: String,
city: String,
state: String,
country: {
type: mongoose.Schema.Types.ObjectId,
ref: 'countrycodes'
},
pincode: String,
}
});
I have this above schema and trying to get the items which has company name="KFC" and category name="food"
Along with the items I want to populate the company and category objects.
const itemList = await Item.find().populate(
{
path: 'companyId',
match: { name: 'KFC'},
select: '_id name'
}).populate(
{
path: 'categoryId',
match: { name: 'food'},
select: '_id name'
}
).lean();
I tried using populate as shown below but this returns items which do not have category name="food" but has comp
name="KFC"
How can I get the items which has company name="KFC" and category name="food" and ignore the ones which do not satisfy both company and category condition.
Also, Is populate() the right way to get the results I want?

How to develop nested condition query in mongoDB

I am pretty new to mongoDb and want to apply nested query.
I have a business schema like this:
const businessSchema = new mongoose.Schema(
{
name: {
type: String,
required: true,
},
businessType: {
type: Schema.Types.ObjectId,
ref: "businessCategory",
required: true,
},
email: {
type: String,
required: true,
},
password: {
type: String,
required: true,
select: false,
},
review: {
type: [reviewSchema],
},
isDeleted: {
type: Boolean,
default: false,
},
},
{ timestamps: true }
);
Business has a review where user can do the review and reviewSchema is
const reviewSchema = new mongoose.Schema(
{
user: {
type: Schema.Types.ObjectId,
ref: "users",
required: true,
},
rating: {
type: Number,
enum: [1, 2, 3, 4, 5],
},
reviewArray: {
type: [singleReviewSchema],
},
},
{ timestamps: true }
);
One user can do many reviews, and it has reviewArray.
ReviewArray schema is
const singleReviewSchema = new mongoose.Schema(
{
title: {
type: String,
},
description: {
type: String,
},
isDeleted: {
type: Boolean,
default: false,
},
},
{ timestamps: true }
);
How to fetch the business with a condition business: isDeleted:false and its reviews with singleReviewSchema: isDeleted:false

I dont know your model names, so please replace path with correct names
but it might look like:
businnesModel.find({isDeleted: false})
.populate({
path: 'reviewModelName',
model: 'review',
populate: {
path: 'reviewArray',
model: 'singleReviewModelName',
match: {
isDeleted : false
}
}
})
It should provide you array of businessModel documents - even when their singleReviews array will be empty (because all of reviews are deleted, or there was zero reviews). So you have to filter it out in JS.
To avoid filtering in JS, and to do it a bit more efficient way for mongodb, you can go with aggregate instead.

Populate a property of a mongoose schema with all the data in another collection

I have a model with articles, and would like to populate an array of data with all the documents in a collection.
const mongoose = require('mongoose');
const Schema = mongoose.Schema;
const ArticlesSchema = new mongoose.Schema({
path: {
type: String,
required: true,
unique: true,
},
base_headline: {
type: String,
required: true,
},
intro: {
type: String,
required: true,
},
featured_image: {
type: String,
required: true,
},
author: {
type: String,
required: true,
},
platform_filter: {
type: String,
},
free_filter: {
type: String,
},
content_type: {
type: String,
required: true,
},
data: [{ type: Schema.Types.ObjectId, ref: 'DesignProducts' }],
date: {
type: Date,
default: Date.now,
},
});
module.exports = mongoose.model('Articles', ArticlesSchema);
The data property should be populated with all documents in the DesignProducts collection.
I tried running this but the data array is still empty:
Article.findOne({ path: slug }).populate('data').exec();
Here is what the designProducts model looks like:
const mongoose = require('mongoose');
const DesignProductsSchema = new mongoose.Schema({
name: {
type: String,
required: true,
unique: true,
},
intro: {
type: String,
required: true,
},
website: {
type: String,
required: true,
},
date: {
type: Date,
default: Date.now,
},
});
module.exports = mongoose.model('DesignProducts', DesignProductsSchema);
This array should be populated with all the documents in the DesignProducts collection:

how to search for any value in the document

I want to search for all value present without specifying key explicitly. Is it possible with this type of schema? If so, how can I write my query. I tried to write query with other refs but I am unable to write without specifying key for each.
const pschema = new Schema({
user: {
type: Schema.Types.ObjectId, // combine by id
ref: "users" //existing model reference
},
company: {
empNo: {
type: Number,
required: true
},
status: {
type: String,
required: true
},...
},
personal: {
gender: {
type: String
},
dob: {
type: Date
},...
},
skills: {
type: [String],
required: true
},
experience: [
{
title: {
type: String,
required: true
},
company: {
type: String,
required: true
},
location: {
type: String
}...
}
],
education: [
{
school: {
type: String,
required: true
},
degree: {
type: String,
required: true
},
specialization: {
type: String
},..
}
],
social: {
twitter: {
type: String
},
facebook: {
type: String
},
linkedin: {
type: String
},...
}
});
For example: If i give linkedin url if should search in social-linkedin and same if i give c it should search in skills array