First time i am trying to use refrence in mongoose , so i am trying to understand if i want to save template with user id , Do we need to get createdBy value from client or how it will be inserted into templateSchema. basically i want to save user id _id when user save template.I was able to save template but i did not get any error and createdBy property did not saved to template collection. Any layman explanation to understand refrencing in mongoose and how i can make it work with below code.
user.js
var UserSchema = new mongoose.Schema({
_id: { type: String, required: true, index: {unique: true}},
firstName: String,
lastName: String,
type: String,
groups:[{type: String, ref: 'Group', required: false}]
},
{
toObject: {
virtuals: true
},
toJSON: {
virtuals: true
}
});
template.js
var User = require('../user/user.model.js');
var TemplateSchema = new mongoose.Schema({
_id: { type: String, required: true},
name: String,
id: String,
appliesTo: [],
properties: [],
createdBy: { type: mongoose.Schema.Types.ObjectId, ref: 'User'}
});
templateCtrl.js
var eTemplate = require('./template.model');
var templatesJavaClass = {
"_id": 12586,
"name": "Java Class",
"id": "javaClass",
"appliesTo": [
"bpmn:UserTask"
],
"properties": [{
"label": "Java Package Name",
"type": "String",
"editable": true,
"binding": {
"type": "property",
"name": "camunda:class"
}
}],
"createdBy": "user1"
}
var template = new eTemplate(templatesJavaClass);
template.save(function(error){
console.log("successfully saved template");
if (error){
console.log(error);
}
});
You need to put user _id in createdBy field of template document while creating/saving it.
Also, make sure it is of Type ObjectId and not string. Otherwise you might get Cast Error.
Try this:
var templatesJavaClass = {
"_id": 12586,
"name": "Java Class",
"id": "javaClass",
"appliesTo": [
"bpmn:UserTask"
],
"properties": [{
"label": "Java Package Name",
"type": "String",
"editable": true,
"binding": {
"type": "property",
"name": "camunda:class"
}
}],
//save users _id in createdBy field
"createdBy": user1._id;//assuming user1 is the users document
}
var template = new eTemplate(templatesJavaClass);
template.save(function(error){
console.log("successfully saved template");
if (error){
console.log(error);
}
});
Related
I have two models, a posts model and a category model where I have an array that stores posts by objectId
Category Model
const mongoose = require('mongoose');
const CategorySchema = new mongoose.Schema(
{
name: {
type: String,
required: true,
},
color: {
type: String,
required: true,
},
posts: [{
type: mongoose.Schema.Types.ObjectId,
ref: 'Post',
required: false,
}],
createdAt: {
type: Date,
default: Date.now,
}
},
{ timestamps: true }
);
module.exports = mongoose.model("Category", CategorySchema);
Post model
const mongoose = require('mongoose');
const PostSchema = new mongoose.Schema(
{
title: {
type: String,
required: true,
},
img: {
type: String,
required: true,
},
category: {
type: mongoose.Schema.Types.ObjectId,
ref: "Category",
},
desc: {
type: String,
required: false,
},
createdAt: {
type: Date,
default: Date.now,
}
},
{ timestamps: true }
);
module.exports = mongoose.model("Post", PostSchema);
So I created a get by id category controller
const Category = require('../../models/Category');
class FindCategory {
async find(req, res) {
const { id } = req.params;
try {
const category = await Category.findById(id);
return res.status(200).json(category);
} catch (err) {
return res.status(500).json(err);
}
}
}
module.exports = new FindCategory();
The problem is that when I make this request in my postman, it returns me for example
{
"_id": "63ac925d872445065a588f61",
"name": "Games",
"color": "#ff914d",
"posts": [
"63ac9cbccec4d9f35c4f4d1f"
],
"createdAt": "2022-12-28T19:00:45.847Z",
"updatedAt": "2022-12-28T19:49:47.119Z",
"__v": 0
}
But I would like to render the information of each post inside the "posts" array, something like that for example
{
"_id": "63ac925d872445065a588f61",
"name": "Games",
"color": "#ff914d",
"posts": [
"name": "red dead",
"img": "example.png",
"category": "games",
"desc": "test,
],
"createdAt": "2022-12-28T19:00:45.847Z",
"updatedAt": "2022-12-28T19:49:47.119Z",
"__v": 0
}
You should use the populate function provided by mongoose: https://mongoosejs.com/docs/populate.html#setting-populated-fields
Category.
findById(...).
populate('posts')
This is My schema:
var ActivityLog = new Schema({
activity_at: { type: Date, default: Date.now },
activity_by: { type: Schema.Types.ObjectId, ref:"User" },
team_id: { type: Schema.Types.ObjectId, ref:"Team" },
activity_type: String,
activity_value: String,
msg: Object,
});
Populating the activity_by field
ActivityLog.find({}).limit(200).populate('activity_by')
.then(activities => {
res.json({success:true,activities:activities})
})
RESULT
{
"_id": "616c6bace259ac5eafe333eb",
"activity_at": "2021-10-17T18:30:04.929Z",
"time": "2021-10-17T18:30:04.929Z",
"activity_by": {
"_id": "6107e5afce6a4a0b54be97b8",
"profilePicUrl": "https://secure.gravatar.com/avatar/daed28df98c99bdaa640956e643bef3e.jpg?s=512&d=http2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0004-512.png",
"user_token": null,
"name": "akshavanthm",
"email": "akshavanthm#gmail.com",
"token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJlbWFpbCI6ImFrc2hhdmFudGhtQGdtYWlsLmNvbSIsIm5hbWUiOiJha3NoYXZhbnRobSIsIl9pZCI6IjYxMDdlNWFlMDcyZDBmNDk3YmQ0MDhkZCIsImlhdCI6MTYyNzkwNzUwMn0.S7NeE-M523i2kGX7BZo-ztHvFoQ61bvvPnXZ0vbbnKM",
"user_id": "6107e5ae072d0f497bd408dd",
"team_id": "T029FKKGT55",
"user_name": "akshavanthm",
"timezone": "Asia/Kolkata",
"user_slack_id": "U029TAAREF7",
"displayName": "",
"__v": 0,
"welcomeSent": true
},
"team_id": "612ddaa24846e87e0eda9ab6",
"activity_type": "highChart_reports",
"activity_value": "successfully sent High Chart report custom_report_2",
"msg": null,
"__v": 0
}
I am Unable to find query for matching the user_id present inside the activity_by
when i use:
ActivityLog.find({"activity_by.user_id":'6107e5ae072d0f497bd408dd'}).limit(200).populate('activity_by')
.then(activities => {
res.json({success:true,activities:activities})
})
it returns null.How to access the user_id inside the activity_by(which is populated).
I can only access the "_id" of the "activity_by" and not the other fields
referring to this answer on github this is not possible using populate.
you can however use aggregating with $lookup like so:
ActivityLog.aggregate([
{
$lookup: {
from:"User",
localField: "activity_by",
foreignField: "_id",
as: "yourDesiredFiledName"
}
}
])
I've been building a mongoose schema for texts that will be displayed across different pages, and it has end point to POST data for updating the texts.
For example, I would like to store text messages that will be displayed/updated in About Page and Contact Page
What would be the preferred way of designing the text model?
1) Model that has all messages stored in one data object
In front-end, the parent component fetches all text messages with Texts.findOne() and trickles down to pages that need it
const textsSchema = new Schema(
{
aboutMessage1: {
type: String,
required: true
},
aboutMessage2: {
type: String,
required: true
},
contactMessage1: {
type: String
},
contactMessage2: {
type: String
}
},
{ timestamps: true }
);
2) Model that contains each message--so it will have multiple objects
In fron-end, each page uses Text.findById(textId) to retrieve each message
const textSchema = new Schema(
{
// Example: name = contactMessage
name: {
type: String
},
message: {
type: String
}
},
{ timestamps: true }
);
3) Multiple models that contains texts for each page
Similar to 1) approach, texts get fetched with Texts.findOne(), but performed in each page
const aboutTextsSchema = new Schema(
{
message1: {
type: String,
required: true
},
message2: {
type: String,
required: true
},
},
{ timestamps: true }
);
const contactTextsSchema = new Schema(
{
message1: {
type: String,
},
message2: {
type: String,
},
},
{ timestamps: true }
);
The most promising option is the second one. Because first and third options are static, and if in the future, you need to add a new page or or a new message to an existing page, it will require changes in the mongoose model, and deployment for API.
But I think, instead of creating a text schema, it would better to create a page schema for your scenario.
Here I embed messages inside the page schema.
const mongoose = require("mongoose");
const Schema = mongoose.Schema;
const pageSchema = new Schema(
{
page: {
type: String
},
messages: [
new Schema({
name: {
type: String
},
message: {
type: String
}
})
]
},
{ timestamps: true }
);
module.exports = mongoose.model("Page", pageSchema);
Now we can use this post route to create a page:
router.post("/pages", async (req, res) => {
const result = await Text.create(req.body);
res.send(result);
});
We can create a page and its messages using the previous post route.
Request Body:
{
"_id": "5e4937e9e2454a2c0c162890",
"page": "About",
"messages": [
{
"_id": "5e4937e9e2454a2c0c162892",
"name": "Abou1",
"message": "About1 message..."
},
{
"_id": "5e4937e9e2454a2c0c162891",
"name": "Abou2",
"message": "About2 message..."
}
],
"createdAt": "2020-02-16T12:39:05.154Z",
"updatedAt": "2020-02-16T12:39:05.154Z",
"__v": 0
}
Response:
{
"_id": "5e4937e9e2454a2c0c162890",
"page": "About",
"messages": [
{
"_id": "5e4937e9e2454a2c0c162892",
"name": "Abou1",
"message": "About1 message..."
},
{
"_id": "5e4937e9e2454a2c0c162891",
"name": "Abou2",
"message": "About2 message..."
}
],
"createdAt": "2020-02-16T12:39:05.154Z",
"updatedAt": "2020-02-16T12:39:05.154Z",
"__v": 0
}
If later we want to add a message to a page we can use the following put route.
router.put("/pages/:id", async (req, res) => {
const result = await Page.findByIdAndUpdate(
req.params.id,
{
$push: { messages: req.body }
},
{ new: true }
);
res.send(result);
});
Request Body:
{
"name": "Abou3",
"message": "About3 message..."
}
Response:
{
"_id": "5e4937e9e2454a2c0c162890",
"page": "About",
"messages": [
{
"_id": "5e4937e9e2454a2c0c162892",
"name": "Abou1",
"message": "About1 message..."
},
{
"_id": "5e4937e9e2454a2c0c162891",
"name": "Abou2",
"message": "About2 message..."
},
{
"_id": "5e493926f905ab3300106f94",
"name": "Abou3",
"message": "About3 message..."
}
],
"createdAt": "2020-02-16T12:39:05.154Z",
"updatedAt": "2020-02-16T12:44:22.763Z",
"__v": 0
}
When client needs a page's messages, all we need to do is retrieving the page by it's id or page name:
router.get("/pages/id/:id", async (req, res) => {
const result = await Page.findById(req.params.id);
res.send(result);
});
//or
router.get("/pages/name/:name", async (req, res) => {
const result = await Page.findOne({ page: req.params.name });
res.send(result);
});
I have added unique key index as suggested in the mongoose and mongoDB documentation but when I try to insert multiple question using insertMany it doesn't throw an error on duplicate items. Am I doing something wrong here?
Question.insertMany(questions);
const NotRequiredStringSchema = { type: String, required: false, default: '' };
const Question = new Schema({
"type": {
type: String,
trim: true,
enum: Object.values(questionTypes),
required: 'Question type is required'
},
"text": {
type: String,
required: true
},
"desc": NotRequiredStringSchema,
"options": [{
"id": ObjectId,
"name": NotRequiredStringSchema,
"helperText": NotRequiredStringSchema,
"icon_key": NotRequiredStringSchema,
"icon_url": NotRequiredStringSchema,
"icon_svg": NotRequiredStringSchema
}]
});
Question.index({
type: 1,
text: 1
}, {
unique: true
});
const model = mongoose.model('Question', Question);
module.exports = model;
I have struggled with the mongoose.model.populate function for hours now. I have even tried directly copying and pasting several solutions without luck.
I have a User model which is supposed to contain an array of 'Dilemmas' which he/she has created, but I have been unable to populate it.
Here are the models as well as the implementation of populate().
User.js
const mongoose = require("mongoose");
const Schema = mongoose.Schema;
// Create Schema
const UserSchema = new Schema({
username: {
type: String,
required: true
},
email: {
type: String,
required: true
},
password: {
type: String,
required: true
},
date: {
type: Date,
default: Date.now
},
dilemmas: [
{
type: Schema.Types.ObjectId,
ref: "Dilemma"
}
]
});
module.exports = User = mongoose.model("User", UserSchema, "users");
Dilemma.js
const mongoose = require("mongoose");
const slug = require("mongoose-slug-generator");
const Schema = mongoose.Schema;
mongoose.plugin(slug);
// Create Schema
const DilemmaSchema = new Schema({
creator: {
type: mongoose.Schema.Types.ObjectId,
ref: "User"
},
title: {
type: String
},
slug: {
type: String,
slug: "title"
},
red: {
type: String,
required: true
},
blue: {
type: String,
required: true
},
red_votes: {
type: Number,
default: 0,
required: true
},
blue_votes: {
type: Number,
default: 0,
required: true
},
likes: [
{
user: {
type: Schema.Types.ObjectId,
ref: "User"
}
}
],
comments: [
{
user: {
type: Schema.Types.ObjectId,
ref: "User"
},
text: {
type: String,
required: true
},
author: {
type: String
},
avatar: {
type: String
},
date: {
type: Date,
default: Date.now
}
}
],
date: {
type: Date,
default: Date.now
}
});
module.exports = Dilemma = mongoose.model("Dilemma", DilemmaSchema, "dilemmas");
Routes.js
// #route GET api/users/profile
// #desc Gets logged in user's profile
// #access Private
router.get(
"/profile",
passport.authenticate("jwt", { session: false }),
(req, res) => {
User.find({ username: req.user.username })
.populate("dilemmas")
.then(user => {
if (!user) {
errors.nouser = "There is no user";
return res.status(404).json(errors);
}
res.json(user);
})
.catch(err => res.status(400).json(err));
}
);
JSON Response
[
{
"_id": "5b807beef770e7c7e6bf7ce0",
"dilemmas": [],
"username": "Jonas",
"email": "Mohrdevelopment#gmail.com",
"password": "$2a$10$QaqljS9x08YQ9N9EuCBTpO114ZJUFuVxAV80xMzImNi8eW2frPg0C",
"date": "2018-08-24T21:43:10.411Z",
"__v": 0
}
]
JSON Dilemmas response
[
{
"red_votes": 0,
"blue_votes": 0,
"_id": "5b80975f6e47fecba621f295",
"user": "5b807beef770e7c7e6bf7ce0",
"title": "Am i the real author asdsdasd?",
"red": "This is the red dilemma",
"blue": "This is the blue dilemma",
"likes": [],
"comments": [],
"date": "2018-08-24T23:40:15.381Z",
"slug": "am-i-the-real-author-asdsdasd",
"__v": 0
},
{
"red_votes": 0,
"blue_votes": 0,
"_id": "5b808e789bc36bcae8c6c3ad",
"creator": "5b807beef770e7c7e6bf7ce0",
"title": "Am i the real author?",
"red": "This is the red dilemma",
"blue": "This is the blue dilemma",
"likes": [],
"comments": [],
"date": "2018-08-24T23:02:16.565Z",
"slug": "am-i-the-real-author",
"__v": 0
}
]
JSON Users response
{
"_id": {
"$oid": "5b807beef770e7c7e6bf7ce0"
},
"dilemmas": [],
"username": "Jonas",
"email": "Mohrdevelopment#gmail.com",
"password": "$2a$10$QaqljS9x08YQ9N9EuCBTpO114ZJUFuVxAV80xMzImNi8eW2frPg0C",
"date": {
"$date": "2018-08-24T21:43:10.411Z"
},
"__v": 0
}
I just encountered a similar issue myself. Populating a ref worked, but populating an array of refs did not. I was able to get the array populate to work by explicitly specifying the model name in the populate call, e.g.:
User.find({ ... }).populate({
path: 'dilemmas',
model: 'Dilemma',
});
I don't know why this makes a difference, when the name of the referenced model is already specified in the schema.
Have you tried this?
User.find({ username: req.user.username })
.populate("dilemmas")
.exec() // <-- add exec() to perform the search
.then(user => {
...
})
Did you check the documentation here?
https://mongoosejs.com/docs/populate.html#refs-to-children
It shows a similar setup (with Authors and Stories.) It mentions 'pushing' stories to be able to use a find / populate combo.