i am beginner of node js and mongodb.when i tried to add the add via postman to mongodb i ran into the problem.
{
"code": "ERR_INVALID_ARG_TYPE"
}
what i tried so far i attached below.
routes
router.route('/user/getAll').get(userController.getDataConntrollerfn);
userController.js
var createUserControllerFn = async (req, res) =>
{
const userModelData = new userModel(req.body)
try
{
await userModelData.save()
res.status(201).send(userModel);
}
catch(error)
{
res.status(400).send(error);
}
}
userModel.js
var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var userSchema = new Schema({
name: {
type: String,
required: true
},
address: {
type: String,
required: true
},
phone: {
type: String,
required: true
}
});
module.exports = mongoose.model('employees', userSchema);
Related
Client.js
const mongoose = require("mongoose");
var Schema = mongoose.Schema;
const clientSchema = new mongoose.Schema(
{
name: { type: String, required: true, default: "" },
}, {
timestamps: true
}
);
module.exports = mongoose.model("Client", clientSchema);
User.js
const mongoose = require("mongoose");
var Schema = mongoose.Schema;
const userSchema = new mongoose.Schema({
name: { type: String, required: true, default: "" },
clients: [{
client: {
type: Schema.Types.ObjectId,
ref: "Client",
default: null
},
user_group: {
type: Number
default: null
}
}]
}, { timestamps: true });
module.exports = mongoose.model("User", userSchema);
auth.js (Where trying to populate Clients)
const express = require("express");
const router = express.Router();
const User = require("../models/User");
const Client = require("../models/Client");
router.post("/users", (req, res) => {
let params = req.body;
let total_client = [];
User.findOne({
email: params.email
})
.populate({
path: "clients.client",
model: Client
})
.exec((err, user) => {
console.log(user);
res.send(user);
});
});
module.exports = router;
Please check the above code. I have given code examples of my two models user.js and client.js. In user schema, I have referenced client inside an array object. While querying user, the client is not population. Please help me to get this thing done. Thanks in advance.
The following expects you to provide a name in the json body of your post request (your example uses email which does not exist in the user model). Also, your model is already defining the ref: Client and so you can simplify your request to just include the path clients.client.
router.post("/users", async (req, res) => {
const { name } = req.body;
const user = await User.findOne({ name: name }).populate('clients.client').exec();
res.send(user);
});
Solved this problem just adding an extra parameter in module export of client.js file
module.exports = mongoose.model("Client", clientSchema, "client");
I am trying to delete a MongoDB document but it's not getting deleted
My schema is
const mongoose = require("mongoose");
const InvestorSchema = mongoose.Schema({
name: {
type: String,
index: true,
required: true
},
logoUrl: {
type: String,
required: true
},
website: {
type: String,
index: true,
unique: true,
required: true
}
});
module.exports = mongoose.model("Investor", InvestorSchema);
and I tried using these but none of them removed the document, Also i'm running on localhost with no users and roles.
// Required models
const InvestorModel = require("mongoose").model("Investor");
const deletedInvestor = InvestorModel.remove({ _id });
const deletedInvestor = InvestorModel.deleteOne({ _id });
const deletedInvestor = InvestorModel.findByIdAndRemove(_id);
const deletedInvestor = InvestorModel.findOneAndRemove({_id});
const deletedInvestor = InvestorModel.findByIdAndDelete(_id);
const deletedInvestor = InvestorModel.findOneAndDelete({_id});
How do i solve this?
try {
InvestorModel.deleteOne( { "_id" : ObjectId("563237a41a4d68582c2509da") } );
} catch (e) {
console.log(e);
}
here the problem is you don't specify what object from the collection you want to remove...
So you should use your code implementation like this mate
InvestorModel.remove({ _id: '563237a41a4d68582c2509da' },callback);
InvestorModel.deleteOne({_id: '563237a41a4d68582c2509da' },callback);
InvestorModel.findByIdAndRemove({_id: '563237a41a4d68582c2509da'},callback);
I think it's not populating categories couse when i try log 'category' in console i get
"ReferenceError: category is not defined". For me it is like in docs but as we see it's not. Is anyone can tell me what is wrong??
//model/Category.js
const mongoose = require("mongoose");
const Schema = mongoose.Schema;
const CatSchema = new Schema({
title: {
type: String,
required: true
},
body: {
type: String,
required: true
}
});
mongoose.model("categories", CatSchema, "categories");
model/Story.js
const mongoose = require("mongoose");
const Schema = mongoose.Schema;
const StorySchema = new Schema({
title: {
type: String,
required: true
},
body: {
type: String,
required: true
},
category: {
type: Schema.Types.ObjectId,
ref: "categories"
}
});
mongoose.model("stories", StorySchema, "stories");
routes/stories.js
const express = require('express');
const router = express.Router();
const mongoose = require('mongoose');
const Category = mongoose.model('categories');
const Story = mongoose.model('stories');
router.get('/add', (req, res) => {
Story.find()
.populate('category', 'title')
.then(stories => {
res.render('stories/add', {
stories: stories
});
});
});
Query.prototype.populate() returns a Query object on which you need to run .exec(), try this:
Story.find({})
.populate('category', 'title')
.exec()
.then(stories => {
res.render('stories/add', {
stories: stories
});
});
It was problem with that how I want to use it. Code is working
In mongodb have two collections for now Event and Packages. So basically the model looks like this
Event Model
const mongoose = require('mongoose');
mongoose.Promise = global.Promise;
const Schema = mongoose.Schema;
const bcrypt = require('bcrypt-nodejs');
const EventSchema = new Schema({
_id: mongoose.Schema.Types.ObjectId,
eventname: {
type: String,
required : true,
},
eventdesc: {
type: String,
required : true,
},
createdAt: {
type: Date,
default: Date.now
},
updatedAt: {
type: Date,
default: Date.now
}
});
module.exports = mongoose.model('Event', EventSchema);
Package Model looks like this
const mongoose = require('mongoose');
mongoose.Promise = global.Promise;
const Schema = mongoose.Schema;
const bcrypt = require('bcrypt-nodejs');
const PackageSchema = new Schema({
_id: mongoose.Schema.Types.ObjectId,
eventpackages: {
type: Object,
required : false,
},
event: {
type: mongoose.Schema.Types.ObjectId,
ref: 'Event'
},
createdAt: {
type: Date,
default: Date.now
},
updatedAt: {
type: Date,
default: Date.now
}
});
module.exports = mongoose.model('Package', PackageSchema);
Here I am trying to update an event so when the event will be updated the packages will be updated also. So in nodejs I have done like this
var express = require('express');
var router = express.Router();
var mongoose = require('mongoose');
/* UPDATE EVENT */
router.put('/:id', function(req, res, next) {
upload(req, res, function(err) {
let EventData = {
eventname : req.body.eventname,
eventdesc : req.body.eventdesc,
}
let EventPackages = {
eventpackages : req.body.sections,
}
Event.findByIdAndUpdate(req.params.id, EventData, function (err, post) {
if (err) return next(err);
Package.findAndModify({
query: { event: req.params.id },
update: { $inc: { EventPackages } },
new: true,
upsert: true
})
res.json(post);
});
});
});
module.exports = router;
But its not working at all. If I will deleted the codes for package update it will work for events.
So can someone tell me how to make this work so that I can update multiple collections at a time.
you can try this,
var query = {
'event': req.params.id
};
var dataToUpdate = {
$set: {
///
}
};
Package.updateMany(query, datatoUpdate, function(err, result) {
if (err) return handleError(err);
return Promise.resolve(result);
});
can you explain me how to organize mongoose models to create one to many connections? It is needed keep separate collections.
suppose i have stores and items
//store.js
var mongoose = require('mongoose');
module.exports = mongoose.model('Store', {
name : String,
itemsinstore: [ String]
});
//item.js
var mongoose = require('mongoose');
module.exports = mongoose.model('Item', {
name : String,
storeforitem: [String]
});
Am i doing it in the right way?
And how to access pass data to arryas?
Here is the code yo enter name to item. But how to enter id to array of id's (itemsinstore)?
app.post('/api/stores', function(req, res) {
Store.create({
name: req.body.name,
}, function(err, store) {
if (err)
res.send(err);
});
})
You should use model reference and populate() method:
http://mongoosejs.com/docs/populate.html
Define your models:
var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var storeSchema = Schema({
name : String,
itemsInStore: [{ type: Schema.Types.ObjectId, ref: 'Item' }]
});
var Store = mongoose.model('Store', storeSchema);
var itemSchema = Schema({
name : String,
storeForItem: [{ type: Schema.Types.ObjectId, ref: 'Store' }]
});
var Item = mongoose.model('Item', itemSchema);
Save a new item into an existing store:
var item = new Item({name: 'Foo'});
item.save(function(err) {
store.itemsInStore.push(item);
store.save(function(err) {
// todo
});
});
Get items from a store
Store
.find({}) // all
.populate('itemsInStore')
.exec(function (err, stores) {
if (err) return handleError(err);
// Stores with items
});
You can do using the best practices with Virtuals.
Store.js
const mongoose = require('mongoose')
const Schema = mongoose.Schema
const StoreSchema = new Schema({
name: {
type: String,
required: true
},
createdAt: {
type: Date,
default: Date.now
}
})
StoreSchema.virtual('items', {
ref: 'Item',
localField: '_id',
foreignField: 'storeId',
justOne: false // set true for one-to-one relationship
})
module.exports = mongoose.model('Store', StoreSchema)
Item.js
const mongoose = require('mongoose')
const Schema = mongoose.Schema
const ItemSchema = new Schema({
storeId: {
type: Schema.Types.ObjectId,
required: true
},
name: {
type: String,
required: true
},
createdAt: {
type: Date,
default: Date.now
}
})
module.exports = mongoose.model('Item', ItemSchema)
StoreController.js
const Store = require('Store.js')
module.exports.getStore = (req, res) => {
const query = Store.findById(req.params.id).populate('items')
query.exec((err, store) => {
return res.status(200).json({ store, items: store.items })
})
}
Keep in mind that virtuals are not included in toJSON() output by default. If you want populate virtuals to show up when using functions that rely on JSON.stringify(), like Express' res.json() function, set the virtuals: true option on your schema's toJSON options.
// Set `virtuals: true` so `res.json()` works
const StoreSchema = new Schema({
name: String
}, { toJSON: { virtuals: true } });
Okay, this is how you define a dependancy:
var mongoose = require('mongoose');
module.exports = mongoose.model('Todo', {
name : String,
itemsinstore: [{ type: Schema.Types.ObjectId, ref: 'Item' }]
});
And make sure you have different names:
var mongoose = require('mongoose');
module.exports = mongoose.model('Item', {
name : String,
storeforitem: [String]
});
Keep an eye on Item in both cases.
And then you just want to pass the array of ObjectIDs in it. See more here: http://mongoosejs.com/docs/populate.html
Try this:
Store.findOne({_id:'5892b603986f7a419c1add07'})
.exec (function(err, store){
if(err) return res.send(err);
var item = new Item({name: 'Foo'});
item.save(function(err) {
store.itemsInStore.push(item);
store.save(function(err) {
// todo
});
});