i wanna show categories name in that view who users can see it beside product
actually in single page view of product but i think i have some problems in relationships of mongo because it just return an empty array!
i will appreciate if you help me
product model :
const createProductSchema = Schema(
{
user: { type: Schema.Types.ObjectId, ref: "User" },
categories: [{ type: Schema.Types.ObjectId, ref: "Category" }],
title: { type: String, required: true },
type: { type: String, required: true },
slug: { type: String, required: true },
body: { type: String, required: true },
images: { type: Object, required: true },
thumb: { type: String, required: true },
price: { type: String, required: true },
tags: { type: String, required: true },
viewCount: { type: Number, default: 0 },
},
{ timestamps: true, toJSON: { virtuals: true } }
);
createProductSchema.virtual("category", {
ref: "Category",
localField: "_id",
foreignField: "products",
});
category model :
const categorySchema = Schema(
{
products: [{type: Schema.Types.ObjectId, ref: "Product" }],
name: { type: String, required: true },
slug: { type: String, required: true },
parent: { type: Schema.Types.ObjectId, ref: "Category", default: null },
},
{ timestamps: true, toJSON: { virtuals: true } }
);
productController:
let product = await Product.findOne({ slug: req.params.product })
.populate([
{
path: "user",
select: "name",
},
{
path:"category",
select:"name",
}
]);
res.json(product);
and in output i just can see category:[]
:((((((
You should populate categories, not category:
let product = await Product.findOne({ slug: req.params.product })
.populate([
{
path: 'user',
select: 'name',
},
{
path: 'categories',
select: 'name',
},
])
.exec();
res.json(product);
Related
I'm using mongoose-paginate-v2 for my TransactionModel.
I can't seem to filter by the user name or email.
If I don't use any query the docs return with the populated objects, like the user's name, and email, so I believe the issue is with the filter variable.
I want to keep using mongoose-paginate-v2
const transactionSchema: Schema = new Schema(
{
user: { type: Types.ObjectId, ref: CollectionNames.user, required: false },
subscription: { type: Types.ObjectId, ref: CollectionNames.subscription, required: false },
paidAt: { type: Date, required: true, default: new Date() },
amount: { type: Number, required: true },
currency: { type: String, required: true, default: CurrencyCodes.USD },
status: { type: String, required: true, default: TransactionStatuses.pending },
refundedAt: { type: Date, required: false },
refundAmount: { type: Number, required: false },
provider: { type: String, required: true },
providerTransactionId: { type: String, required: true },
invoiceLink: { type: String, required: false },
referral: { type: referralSchema, required: false },
eventsHistory: { type: [String], required: false, default: [] }
},
{
timestamps: true
}
);
// The function body:
const { page, limit, query: searchQuery } = query;
const options = {
page: page || 1,
limit: limit || 10,
sort: {
createdAt: -1
},
populate: [
{
path: 'user',
select: 'name socialAccounts email lastLoginEmail notificationEmail'
},
{
path: 'referral',
select: 'user commission payoutExpectedAt paidAt status'
}
],
lean: true
};
const filter = {};
if (searchQuery) {
const searchQueryRegex = new RegExp(searchQuery, 'i');
Object.assign(filter, {
$or: [
{
providerTransactionId: {
$regex: searchQueryRegex
}
},
{
'user.name': {
$regex: searchQueryRegex
}
},
{
'user.email': {
$regex: searchQueryRegex
}
},
]
});
}
const { docs, totalDocs, totalPages, hasNextPage } = await TransactionModel.paginate(filter, options);
I'm trying to fetch data from below mongoose schema, But I'm not sure how to fetch the role field, which is a type of RoleObject.
import * as mongoose from 'mongoose';
const Schema = mongoose.Schema;
const RoleObject = {
current_role: {
type: Schema.Types.ObjectId,
ref: 'Role',
autopopulate: true
},
new_role: {
type: Schema.Types.ObjectId,
ref: 'Role',
autopopulate: true
}
}
const UserRequestSchema = new mongoose.Schema({
group: {
type: Schema.Types.ObjectId,
ref: 'Group',
autopopulate: true,
required: true
},
user: {
type: Schema.Types.ObjectId,
ref: 'User',
autopopulate: true,
required: true
},
role: {
type: RoleObject
},
status: {
type: String,
required: true,
enum: ['pending', 'approved', 'denied']
},
type: {
type: String,
required: true,
enum: ['group-join', 'role-change']
},
active: {
type: Boolean,
required: true
}
});
UserRequestSchema.index( { group: 1, user: 1 }, { unique: true } );
export { UserRequestSchema };
Here I want populate the role field from the UserRequestSchema, which is given as RoleObject.
Is it possible through populate the field using find method or do I need to use aggregation ?
Try this
UserRequest.find({active:true}).populate({
path: 'role.current_role role.new_role',
model: 'Role',
select: 'name'
}).exec((error, result) => {
if (error) {
console.log(error, " ERROR")
}
console.log(result, "Result")
});
If you face any issue. Please let me know
I am trying to filter an array in a document in mongoose.
The problem i am having is trying to filter with a value in the array that is in the reference.
To clarify, i have a document containg all the information about a course. In that course i have a array of objects that contains information about students. An object containts a status and also a refrence to the actual user object. I would like filter the students array with a value found in the refrence.
The way i have tested this is as following:
courseModel.findOne({ _id: courseId, 'students.user.startDate': { $lte: startDate } });
My models look like this:
CourseModel:
{
name: {
type: String,
required: true,
maxlength: 50,
minlength: 2,
trim: true
},
description: {
type: String,
required: false,
maxlength: 500,
trim: true
},
type: {
type: String,
required: true,
enum: ['physical', 'online', 'quiz']
},
color: {
type: String,
required: true,
match: /^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})$/
},
events: [
{
type: Schema.Types.ObjectId,
ref: 'event'
}
],
questions: [
{
type: Schema.Types.ObjectId,
ref: 'question'
}
],
educators: [
{
type: Schema.Types.ObjectId,
ref: 'user'
}
],
students: [
{
user: {
type: Schema.Types.ObjectId,
ref: 'user'
},
status: {
type: String,
enum: ['notBooked', 'booked', 'attended', 'completed']
},
lastSlackMessage: {
ts: {
type: String
},
channel: {
type: String
}
},
events: [
{
type: Schema.Types.ObjectId,
ref: 'event'
}
]
}
],
teams: [
{
type: Schema.Types.ObjectId,
ref: 'team'
}
],
createdBy: {
type: Schema.Types.ObjectId,
ref: 'user'
},
updatedBy: {
type: Schema.Types.ObjectId,
ref: 'user'
}
}
UserModel:
{
name: {
type: String,
required: true,
maxlength: 100,
trim: true
},
email: {
type: String,
required: true,
minlength: 5,
match: /^(([^<>()[\]\\.,;:\s#"]+(\.[^<>()[\]\\.,;:\s#"]+)*)|(".+"))#((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/
},
employeeId: {
type: String,
required: true
},
slackId: {
type: String,
default: ''
},
teams: [
{
type: Schema.Types.ObjectId,
ref: 'team'
}
],
questions: [
{
question: {
type: Schema.Types.ObjectId,
ref: 'question'
},
status: {
type: String,
enum: ['answered', 'pending', 'notSent']
},
tries: {
type: Number,
default: 0
}
}
],
startDate: {
type: Date,
required: true
}
}
I appreciate any help i can get, thank you!
There is a schema of homeworks:
const schema = new Schema({
dateAssign: { type: Date, default: Date.now, index: true },
teacher: { type: Schema.ObjectId, ref: 'user', index: true },
lesson: { type: Schema.ObjectId, ref: 'lesson', index: true },
exercises: [
{ type: Schema.ObjectId, ref: 'exercise' },
],
});
mongoose.model('homework', schema)
An exercise's schema:
const schema = new Schema({
block: { type: Schema.ObjectId, ref: 'lessonblock', index: true },
variant: { type: Schema.ObjectId, ref: 'variant', index: true },
result: { type: Schema.ObjectId, ref: 'exerciseresult', index: true },
variables: { type: Schema.Types.Mixed, default: {} },
start_at: { type: Date },
lock: { type: Boolean, default: false, index: true },
});
mongoose.model('exercise', schema);
How to find all homeworks where in exercises all elements has a field 'lock' = true?
I have tried, but it didn't work:
const HWs = await Homework.find({ teacher, 'exercises.lock': true }, null, { sort: { dateAssign: -1 }, limit: 20 })
My search Position is the same as the position in the database. The result is an empty array. I expected to get the one element from database, because the distance between both locations is 0.
Mongo Doku $near
Query to find all nearest
Request.find({
address: {
location: {
$near: {
$geometry: {
type: 'Point' ,
coordinates: [8.4821159,49.4705199],
},
$maxDistance: 10000,
$minDistance: 0,
},
},
},
})
Mongoose Model
Edit (add): this.request.index({'address.location': '2dsphere'});
import mongoose from 'mongoose';
const ObjectId = mongoose.Schema.Types.ObjectId;
import {RequestMiddleware} from './RequestMiddleware';
class Request extends mongoose.Schema {
public request: mongoose.Schema;
constructor() {
const RequestSchema = {
title: {
type: String,
required: true,
},
description: {
type: String,
required: true,
},
category: {
type: ObjectId,
ref: 'Category',
required: true,
},
created_by: {
type: ObjectId,
ref: 'User',
required: true,
},
address: {
location: {
type: {
type: String,
enum: ['Point'],
default: 'Point',
required: true,
},
coordinates: {
type: [Number],
default: [0, 0],
required: true,
},
},
plz: {
type: String,
required: false,
},
city: {
type: String,
required: false,
},
street: {
type: String,
required: false,
},
street_nr: {
type: String,
required: false,
},
},
time_end: {
type: Date,
required: false,
},
confirmed_helper: {
type: ObjectId,
ref: 'User',
},
helper: [{
helperId: {
type: ObjectId,
ref: 'User',
},
offer_text: {
type: String,
},
}],
};
const request = super(RequestSchema, {
timestamps: {
createdAt: 'created_at',
updatedAt: 'updated_at',
},
});
this.request = request;
this.request.index({'address.location': '2dsphere'});
this.request.plugin(RequestMiddleware);
return this.request;
}
}
export default mongoose.model('Request', new Request());
Database:
You need two things:
2dspere index (probably you already have it):
db.col.createIndex( { "address.location" : "2dsphere" } )
and to modify your query so that it uses the dot notation instead of nested object:
let result = await Request.find({
'address.location': {
$near: {
$geometry: {
type: 'Point',
coordinates: [8.4821159, 49.4705199]
},
$maxDistance: 10000,
$minDistance: 0
}
}
});