How can I delete a key from my JSON if its empty - javascript

I am trying to delete the key from js object if key doesn't have value inside of it.
I have tried using delete foundBrief.Contents.url but not worked. I am doing this for alexa flash briefing skill. It throws error if the redirection url is blank I have to remove that attribute url in that case if its empty.
ContentSchema:
var contentSchema = new mongoose.Schema({
_id : { type: String, default: uuid.v1},
date: Date,
titleText: String,
mainText: String,
Url: String,
author:{
id: {
type: mongoose.Schema.Types.ObjectId,
ref: "User"
},
username: String
}
},{
versionKey: false
});
To display json object on the url using routes:
router.get("/:id/abcd.json", function(req, res) {
Brief.findById(req.params.id)
.populate("contents")
.exec(function(err, foundBrief) {
if (err) {
console.log(err);
} else {
console.log(foundBrief.contents);
//[{"uid":"00a3b980-4ccc-11e9-ab44-dd6a45baec41","date":"2019-03-22T02:30:00.000Z","title":"title test","main":"content text","Url":""}]
foundBrief.contents.forEach(function(element) {
if(element.Url === ""){
delete element.Url;
}
});
}
});
});
Have this
[
{
uid: "00a3b980-4ccc-11e9-ab44-dd6a45baec41",
date: "2019-03-22T02:30:00.000Z",
title: "title test",
main: "content text",
Url: ""
}
];
want this
[
{
uid: "00a3b980-4ccc-11e9-ab44-dd6a45baec41",
date: "2019-03-22T02:30:00.000Z",
title: "title test",
main: "content text"
}
];

for(let obj of foundBrief.contents){
Object.keys(obj).forEach(function(key){
if(obj[key] === ''){
delete obj[key];
}
})
}

Related

save() does not change using mongoose

I have this code that is supposed to edit an object grabbed from a MongoDB. One of the fields is a map that has an array in it. I push to that array in the map. I log the object itself and it definitely got put into the array of the Map. It just doesn't update in the Database
Guild Model:
let {
Schema,
model
} = require('mongoose');
let Guild = new Schema({
guildID: {
type: String,
required: true
},
guildname: {
type: String,
required: true
},
prefix: {
type: String,
required: false,
default: "y!"
},
welcome_channel: {
id: {
type: String,
required: false,
default: null
},
message: {
type: String,
required: false,
default: "has joined the server!",
}
},
mod_log: {
type: String,
required: false,
default: null
},
spaces: {
type: Map,
required: false,
default: []
}
})
module.exports = model('Guild', Guild);
I grab the guild object in my code later on, it isn't null or undefined.
let fetch_guild = await Guild.findOne({"guildid": id});
// successfully grabs the object from the db
let temp_space = fetch_guild.spaces.get(args[0]) ? fetch_guild.spaces.get(args[0]) : null;
if(temp_space.admins.includes(message.mentions.users.first().id)) return message.reply("That person is already an admin!");
temp_space.admins.push(message.mentions.users.first().id);
console.log(fetch_guild.spaces)
Result of that console.log:
Map {
'test' => { name: 'test', admins: [] },
'test2' => { name: 'test2', admins: [] },
'test3' => { name: 'test3', admins: [ '500765481788112916' ] }
}
And I save it using:
await fetch_guild.save();
In the database, it is still an empty array
try using updateOne() of mongoose.
await fetch_guild.updateOne(fetch_guild);

How to save data in mongoDB and Schema is like bellow

Here is my schema by using mongoose npm package.
var StatusSchema = new mongoose.Schema({
empName: {
projectName: { type: String },
clientName: { type: String },
statusLastWeek: { type: String },
statusThisweek: { type: String },
planNextWeek: { type: String }
}
});
Here is my nodejs code to update the data
var Status = mongoose.model('Status', StatusSchema);
module.exports = Status;
Description: Want save data in MongoDB, data schema is like above mentioned,
save saving data is sored loke as bellow.
Inside Mongo DB :
{ "_id" : ObjectId("5d92f4aba4695e2dd90ab438"), "__v" : 0 }
{ "_id" : ObjectId("5d92f4b4a4695e2dd90ab439"), "__v" : 0 }
Expected collection in MongoDB :
Dave Smith {
projectName: BLE Mesh,
clientName: Tera,
statusLastWeek: BLE Scan,
statusThisweek: BLE List View,
planNextWeek: Mqtt config
}
Here you can see my NodeJS code :
router.post ('/update', (req,res,next)=>{
userStatus = new wkStatus(req.body)
userStatus.save()
.then(status => {
res.redirect('/success');
console.log ("Status saved in DB")
})
.catch(err => console.log(err))
// return next;
});
//You can use ODM like mongoose and define a schema with mongoose.Schema. You can just
// see mongoose module document from npm. Use .save() for save an object in DB.
// Example :
// schema as admin
const mongoose = require('mongoose');
mongoose.Promise = global.Promise;
const Schema = mongoose.Schema;
const bcrypt = require('bcrypt-nodejs');
const sha256 = require('sha256')
const adminSchema = new Schema({
fullName: { type: String, required: true },
userName: { type: String },
noc: { type: String, required: true },
mobileNumber: { type: String, required: true },
email: { type: String },
chacommAddress: {
contactPerson: { type: String },
country: { type: String },
address: { type: String },
city: { type: String },
pinCode: { type: String },
state: { type: String },
stateCode: { type: String },
},
address: {
country: { type: String },
city: { type: String },
pinCode: { type: String },
state: { type: String },
stateCode: { type: String },
address: { type: String },
CIN: { type: String },
GSTIN: { type: String }
},
password: { type: String, required: true },
userType: { type: Number, required: true },
createdAt: { type: Date, required: true },
uploadFile: { type: String, required: true },
bankdetails: {
bankName: { type: String },
accountNo: { type: String },
ifscCode: { type: String },
accountType: { type: String },
accountName: { type: String },
cancelledChequeCopy: { type: String }
},
isActive: { type: Boolean },
invoiceString:{type:String},
invoiceValue:{type:Number},
accountantName :{type:String} ,
accountantDesignation : {type:String},
referredBy:{type:String}
});
adminSchema.methods.comparePassword = function (password) {
let password_hash = sha256(password);
return bcrypt.compareSync(password_hash, this.password);
}
adminSchema.pre('save', function (next) {
if (!this.isModified('password'))
return next();
let password_hash = sha256(this.password);
bcrypt.hash(password_hash, null, null, (err, hash) => {
if (err)
return next(err);
this.password = hash;
next();
});
});
//export schema
// module.exports = mongoose.model('Admin', adminSchema)
// for save:
const admin = require('admin')
var obj= new admin({
// values as per model defined
})
obj.save()
const wkStatus = new wkStatus({
_id: new mongoose.Types.ObjectId(),
projectName: req.body.projectName,
clientName: req.body.clientName,
statusThisweek: req.statusThisweek,
statusLastWeek: req.statusLastWeek,
planNextWeek: req.planNextWeek
})
Status
.save()
.then(result => {
res.status(201).json({
message: "Data Created Successfully",
})
console.log(result) // show the response
})
.catch(err => {
res.status(500).json({error:err})
})
Try this way hope it will work. If need more you can message me
The schema what you are trying to create itself is wrong.
empName: {
projectName: { type: String },
clientName: { type: String },
statusLastWeek: { type: String },
statusThisweek: { type: String },
planNextWeek: { type: String }
}
The above schema can create objects like below: "empName" cannot be dynamic.
empName: {
projectName: BLE Mesh,
clientName: Tera,
statusLastWeek: BLE Scan,
statusThisweek: BLE List View,
planNextWeek: Mqtt config
}
If you want to store like what you have shown, where empName dynamically then you should make empName as Map
See https://mongoosejs.com/docs/schematypes.html#maps

Pushing objects into an array from nodejs server

my server side code
router.put('/api/user1', function(request, response){
Model.findById(request.body._id, function(err, user){
console.log(request.body);
if(err){
response.status(404).send(err);
}
else {
user.update(
{"_id": user._id },
{ '$push':
{ "feed": {"status":request.body.status, "comments":request.body.comments} }})
}
})
});
my client side code
vm.statusUpdateUser = function(user,status,comments){
console.log(status);
var payload = {_id: user._id, status: status, comments:comments }
if(user){
$http.put('/api/user1', payload).then(function(response){
console.log('status details send'+ user.feed.status);
vm.getUsers();
})
}
}
here is my mongoose model
var UsersSchema = new Schema({
name: {
type: String,
required: true
},
diameter: {
type: String,
required: true,
},
atno: {
type: Date,
default : Date.now
},
holder: {
type: Date,
},
toolType: {
type: String,
required: true
},
feed:[{
status: {
type: String
},
comments: {
type: String
},
posted_date: {
type: Date,
default : Date.now
}
}]
});
I am trying to push status and comments into my feed array
but it not going through, please help with this issue.
the get put delete post all working fine but adding a key value pair into an array is not working for me
any idea guys??

how can i exit nodejs script after mongo db write

I have 400,000 lines to enter and I need to break it up. Unfortunately I cannot get this script to exit until it's completed everything. It invariably runs out of memory of course. I thought setting a value at .on('end',function() would be useful but I can't see that value once the .on data has completed.
'use strict';
var mongoose = require('mongoose');
var fs = require('fs');
var parse = require('csv-parse');
var Schema = mongoose.Schema;
var done;
mongoose.connect('mongodb://127.0.0.1:27017/auth');
var userSchema = new mongoose.Schema({
username: {
type: String,
unique: true
},
password: String,
email: {
type: String,
unique: true
},
isActive: String,
roles: {
account: {
type: mongoose.Schema.Types.ObjectId,
ref: 'Account'
}
},
timeCreated: {
type: Date,
default: Date.now
},
search: [String]
});
var accountSchema = new mongoose.Schema({
user: {
id: {
type: mongoose.Schema.Types.ObjectId,
ref: 'User'
},
name: {
type: String,
default: ''
}
},
isVerified: {
type: String,
default: ''
},
verificationToken: {
type: String,
default: ''
},
name: {
first: {
type: String,
default: ''
},
middle: {
type: String,
default: ''
},
last: {
type: String,
default: ''
},
full: {
type: String,
default: ''
}
},
company: {
type: String,
default: ''
},
phone: {
type: String,
default: ''
},
zip: {
type: String,
default: ''
},
memberid: {
type: String,
default: ''
},
status: {
id: {
type: String,
ref: 'Status'
},
name: {
type: String,
default: ''
},
userCreated: {
id: {
type: mongoose.Schema.Types.ObjectId,
ref: 'User'
},
name: {
type: String,
default: ''
},
time: {
type: Date,
default: Date.now
}
}
},
userCreated: {
id: {
type: mongoose.Schema.Types.ObjectId,
ref: 'User'
},
name: {
type: String,
default: ''
},
time: {
type: Date,
default: Date.now
}
},
search: [String]
});
var User = mongoose.model('User', userSchema);
var Account = mongoose.model('Account', accountSchema);
fs.createReadStream('./ipart')
.pipe(parse({
delimiter: ','
}))
.on("data-invalid", function(data) {})
.on('data', function(csvrow) {
var u = {
isActive: 'yes',
username: csvrow[0],
email: csvrow[0],
search: [
csvrow[1] + ' ' + csvrow[2],
csvrow[0],
]
};
User.create(u, function(err, createdUser) {
if (err) {
console.log(err);
return;
}
var user = createdUser;
var displayName = csvrow[1] + ' ' + csvrow[2] || '';
var nameParts = displayName.split(' ');
var acct = {
isVerified: 'no',
'name.first': nameParts[0],
'name.last': nameParts[1] || '',
'name.full': displayName,
user: {
id: user._id,
name: user.username
},
search: [
nameParts[0],
nameParts[1] || ''
]
};
Account.create(acct, function(err, account) {
if (err) {
return workflow.emit('exception', err);
}
var fieldstoset = {
roles: {
account: account._id
}
};
User.findByIdAndUpdate(account.user.id, fieldstoset, function(err, user) {
if (err) throw err;
});
});
});
})
.on('end', function() {
console.log('complete');
});
You really need to use bulk inserts, I found this code somewhere and pasting it for you
var Potato = mongoose.model('Potato', PotatoSchema);
var potatoBag = [/* a humongous amount of potato objects */];
Potato.collection.insert(potatoBag, onInsert);
function onInsert(err, docs) {
if (err) {
// TODO: handle error
} else {
console.info('%d potatoes were successfully stored.', docs.length);
}
}
I would recommend you to break down your entire logic of importing your CSV data into these following steps:
1. Write a simple script file which imports the CSV into a temporary collection like this:
YourImportScript
#!/bin/bash
mongoimport -d YourDBName -c YourTempCollectionName --drop --type csv --file pathToYourCSVFile.csv --headerline
2. Run the scripts before creating your Users:
var exec = require('child_process').exec;
function importCSV(callback) {
exec("./pathToYourImportScript/YourImportScript", function (error, stdout, stderr) {
console.log(stdout);
if (error !== null)
console.log('exec error: ' + error);
});
callback()
}
MongoImport will import the CSV pretty quickly.
Get the documents from the temp collection and insert them into your Users Collection.
You can also use async module to control the flow of your code mode neatly:
async.series([
function (callback) {
//CSV Import function
},
function (callback) {
//User Manupulation function
}]);
And it is better to put headers into your CSV columns, as you can create a model when importing documents from the temp collections, and it would be easier to get the properties of users by column headers like username:myCSVModel.username instead of username: csvrow[0].

Meteor: Add subdocument to existing record

I have the following Scheme:
dGroup = new SimpleSchema({
title: { type: String, optional: true },
element: { type: String, optional: true }
});
MongoDB.attachSchema(new SimpleSchema({
title: { type: String },
slug: { type: String, unique: true },
language: { type: String, defaultValue: "en" },
group: { type: [dGroup], optional: true },
}));
... and in the DB I got this:
{ "_id" : "ag9qXWpCYm87kZbEk", "title" : "Test", "slug" : "test", "language" : "en" }
Now I want to add a dGroup -> title:
updates['group.title'] = 'insert this as a new group title with no element';
MongoDB.update({ _id: Id }, { $push: updates }, function(error) { if(error) console.warn(error); });
But this doesn't work. So I need some help to add subdocuments in meteor in case they do not exist.
Try declaring your object first and push it properly, like this:
var newGroup = {
title: 'insert this as a new group title with no element'
};
MongoDB.update({ _id: Id }, { $push: {group: newGroup }}, function(error) { if(error) console.warn(error); });

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