Samuel Tucker

Samuel Tucker

1570614069

Building Slack Bot using Node.js and MongoDB

The comprehensive step by step tutorial of building Slack Bot using Node.js and MongoDB with the help of Slackbots module. Slack become the popular tools recently that used by developers. There is a Bot feature on the Slack that can be accessed by Slack RTM. On the Node.js environment, there are a lot of modules that can use for accessing Slack RTM easily. We will be using this Slackbots module for this tutorial. You can find more available methods on their GitHub README.

The scenario for this tutorial same as Java version tutorial. There is catch the keyword from a conversation or chats that contains harsh words or bad words (ex: fuck, sht, b*tch) then save it to MongoDB include with User who sends it. The Slack will count that words from MongoDB until getting 5 words then the Bot will send back the message to channels to warns the sender of bad words.

The following tools, frameworks, and modules are required for this tutorial:

  • Node.js
  • Mongoose module
  • Bluebird module
  • Slackbots module
  • MongoDB
  • Slack Account
  • IDE and Text Editor
  • Terminal (OSX/Linux) or Node.js Command Line (Windows)
    Before continuing to the steps of the tutorial, make sure you have installed Recommended version of Node.js and MongoDB on your machine.

1. Generate Slack Bot Token

We need a Slack token before moving to Spring Boot MongoDB Slack Bot tutorial. For that, on the browser go to https://yourworkspace.slack.com/services/new/bot. You will redirect to the login form if not logged in yet. Log in using your workspaces user then you will entering Slack Bot configuration page.

Node.js and MongoDB Slack Bot Example - Create Bot

Give username for your bot then click Add Bot Integration button. That’s it, now you have your Bot token that ready to use. Save that code somewhere in your local, do not try to save it on public repositories or the bot will be disabled by Slack.

Node.js and MongoDB Slack Bot Example - Slack API Token

2. Create a Node.js Application

To create a Node.js application, open the terminal then go to your Node projects folder then create a folder for this Node.js app.

mkdir node-slackbot

Next, go to the newly created folder then type this command to initialize the Node.js application.

cd node-slackbot
npm init

Leave all question as default press enter few times, so the result will be like this.

{
  "name": "slackbot",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC"
}

Then type yes to complete this Node app wizard. Now, you will see a file package.json that contains required modules for creating Node application. Open and edit package.json then add dependencies for all modules that required for this tutorial by replacing all codes with this.

{
  "name": "slackbot",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "npm test",
    "start": "node index.js"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "bluebird": "^3.5.1",
    "mongoose": "^4.13.6",
    "slackbots": "^0.3.0"
  }
}

Next, install all modules and dependencies by type this command.

npm install

Now, create a new Javascript file on the root of the project folder.

touch index.js

Open and edit index.js then declare this required variables.

var SlackBot = require('slackbots'); // import slackbot library
var mongoose = require('mongoose');  // import mongoose library for accessing MongoDB

Declare the variable for handle HTTP request and response including server creation method.

var http = require('http');
http.createServer((req, res) => {}).listen(1337, '127.0.0.1');

Add the MongoDB connection using Mongoose.js and Bluebird module.

/* Create MongoDB Connection */
mongoose.Promise = require('bluebird');
mongoose.connect('mongodb://localhost/slackbot', { useMongoClient: true, promiseLibrary: require('bluebird') })
  .then(() =>  console.log('connection succesful'))
  .catch((err) => console.error(err));

Run your Node app by type this command.

npm start

You will see response below on the Terminal or Node.js command line if Node app is working.

> [email protected] start /Users/didin/Documents/NodeApps/node-slackbot
> node index.js

connection succesful

3. Create Mongoose.js Model

To create a model that represents MongoDB collection, create a folder with a new Javascript file on the root of the project directory.

mkdir models
touch models/Badword.js

Open and edit Badword.js file then add this lines of codes.

var mongoose = require('mongoose');

var BadwordSchema = new mongoose.Schema({
  user_id: String,
  keyword: String,
  receive_date: { type: Date, default: Date.now },
});

module.exports = mongoose.model('Badword', BadwordSchema);

4. Create Helper for Retrieve and Send Slack Bot Messages

For accessing Slack Bot or Slack RTM, create a new folder and Javascript file.

mkdir helpers
touch helpers/bot.js

Open and edit helpers/bot.js then import and declare the required modules.

var SlackBot = require('slackbots');
var mongoose = require('mongoose');
var Badword = require('../models/Badword.js');

Next, instantiate Slackbots library with your own Slack Bot token.

var bot = new SlackBot({
    token: 'BOT_API_KEY',
    name: 'SlackBot'
});

Create initial methods for first run.

exports.run = () => {
  bot.on('start', onStart);
  bot.on('message', onMessage);
}

Create onStart function to start the Slack Bot on the Slack Team.

var onStart = () => {
  console.log('Bot started');
}

Create save function and count bad words function including sending the message back to Slack channel.

var saveWord = (channel,user, word) => {
  Badword.create({user_id:user.id,keyword:word}, (err, post) => {
    if (err) {
      console.log(err);
      return;
    } else {
      countWord(channel,user);
    }
  });
}

var countWord = (channel,user) => {
  Badword.find({user_id:user.id}).exec((err, badwords) => {
    if (err) {
      console.log(err);
      return;
    } else {
      if(badwords.length > 5) {
        bot.postMessageToChannel(channel.name, 'It\'s enough '+user.name+' you will kicked from this channel!', {as_user: true});
      } else {
        bot.postMessageToChannel(channel.name, 'Becareful '+user.name+' you have say bad word '+badwords.length+' times.', {as_user: true});
      }
    }
  });
}

Create function for retrieve message from Slack channel.

var onMessage = (message) => {
  users = [];
  channels = [];
  var botUsers = bot.getUsers();
  users = botUsers._value.members;
  var botChannels = bot.getChannels();
  channels = botChannels._value.channels;

  if(message.type === 'message' && Boolean(message.text)) {
    var channel = channels.find(channel => channel.id === message.channel);
    var usr = users.find(user => user.id === message.user);

    if(usr.name !== 'attitudebot') {
      if(message.text.toLowerCase().indexOf('shit') || message.text.toLowerCase().indexOf('fuck') || message.text.toLowerCase().indexOf('bitch')) {
        var keyword = '';
        if(message.text.toLowerCase().indexOf('shit')) {
          keyword = 'shit';
        }
        if(message.text.toLowerCase().indexOf('fuck')) {
          keyword = 'fuck';
        }
        if(message.text.toLowerCase().indexOf('bitch')) {
          keyword = 'bitch';
        }
        saveWord(channel,usr,keyword);
      }
    }
  }
}

5. Test and Run The Slack Bot App

Before test and run the Slack Bot app, make sure MongoDB service is running or you can type this on the other Terminal tab.

mongod

Now, run the Node.js app.

npm start

Open your Slack on the browser or desktop then invite Slack Bot to the Team. After that, you can test using the bad word to your channel as below example.

Node.js and MongoDB Slack Bot Example - Slack Bot Example

That’s it, a simple example of Slack Bot using Node.js, Mongoose.js and Slackbots module. You can find the full source code on our GitHub.

#node-js #mongodb #chatbot

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Buddha Community

Building Slack Bot using Node.js and MongoDB
Aria Barnes

Aria Barnes

1622719015

Why use Node.js for Web Development? Benefits and Examples of Apps

Front-end web development has been overwhelmed by JavaScript highlights for quite a long time. Google, Facebook, Wikipedia, and most of all online pages use JS for customer side activities. As of late, it additionally made a shift to cross-platform mobile development as a main technology in React Native, Nativescript, Apache Cordova, and other crossover devices. 

Throughout the most recent couple of years, Node.js moved to backend development as well. Designers need to utilize a similar tech stack for the whole web project without learning another language for server-side development. Node.js is a device that adjusts JS usefulness and syntax to the backend. 

What is Node.js? 

Node.js isn’t a language, or library, or system. It’s a runtime situation: commonly JavaScript needs a program to work, however Node.js makes appropriate settings for JS to run outside of the program. It’s based on a JavaScript V8 motor that can run in Chrome, different programs, or independently. 

The extent of V8 is to change JS program situated code into machine code — so JS turns into a broadly useful language and can be perceived by servers. This is one of the advantages of utilizing Node.js in web application development: it expands the usefulness of JavaScript, permitting designers to coordinate the language with APIs, different languages, and outside libraries.

What Are the Advantages of Node.js Web Application Development? 

Of late, organizations have been effectively changing from their backend tech stacks to Node.js. LinkedIn picked Node.js over Ruby on Rails since it took care of expanding responsibility better and decreased the quantity of servers by multiple times. PayPal and Netflix did something comparative, just they had a goal to change their design to microservices. We should investigate the motivations to pick Node.JS for web application development and when we are planning to hire node js developers. 

Amazing Tech Stack for Web Development 

The principal thing that makes Node.js a go-to environment for web development is its JavaScript legacy. It’s the most well known language right now with a great many free devices and a functioning local area. Node.js, because of its association with JS, immediately rose in ubiquity — presently it has in excess of 368 million downloads and a great many free tools in the bundle module. 

Alongside prevalence, Node.js additionally acquired the fundamental JS benefits: 

  • quick execution and information preparing; 
  • exceptionally reusable code; 
  • the code is not difficult to learn, compose, read, and keep up; 
  • tremendous asset library, a huge number of free aides, and a functioning local area. 

In addition, it’s a piece of a well known MEAN tech stack (the blend of MongoDB, Express.js, Angular, and Node.js — four tools that handle all vital parts of web application development). 

Designers Can Utilize JavaScript for the Whole Undertaking 

This is perhaps the most clear advantage of Node.js web application development. JavaScript is an unquestionable requirement for web development. Regardless of whether you construct a multi-page or single-page application, you need to know JS well. On the off chance that you are now OK with JavaScript, learning Node.js won’t be an issue. Grammar, fundamental usefulness, primary standards — every one of these things are comparable. 

In the event that you have JS designers in your group, it will be simpler for them to learn JS-based Node than a totally new dialect. What’s more, the front-end and back-end codebase will be basically the same, simple to peruse, and keep up — in light of the fact that they are both JS-based. 

A Quick Environment for Microservice Development 

There’s another motivation behind why Node.js got famous so rapidly. The environment suits well the idea of microservice development (spilling stone monument usefulness into handfuls or many more modest administrations). 

Microservices need to speak with one another rapidly — and Node.js is probably the quickest device in information handling. Among the fundamental Node.js benefits for programming development are its non-obstructing algorithms.

Node.js measures a few demands all at once without trusting that the first will be concluded. Many microservices can send messages to one another, and they will be gotten and addressed all the while. 

Versatile Web Application Development 

Node.js was worked in view of adaptability — its name really says it. The environment permits numerous hubs to run all the while and speak with one another. Here’s the reason Node.js adaptability is better than other web backend development arrangements. 

Node.js has a module that is liable for load adjusting for each running CPU center. This is one of numerous Node.js module benefits: you can run various hubs all at once, and the environment will naturally adjust the responsibility. 

Node.js permits even apportioning: you can part your application into various situations. You show various forms of the application to different clients, in light of their age, interests, area, language, and so on. This builds personalization and diminishes responsibility. Hub accomplishes this with kid measures — tasks that rapidly speak with one another and share a similar root. 

What’s more, Node’s non-hindering solicitation handling framework adds to fast, letting applications measure a great many solicitations. 

Control Stream Highlights

Numerous designers consider nonconcurrent to be one of the two impediments and benefits of Node.js web application development. In Node, at whatever point the capacity is executed, the code consequently sends a callback. As the quantity of capacities develops, so does the number of callbacks — and you end up in a circumstance known as the callback damnation. 

In any case, Node.js offers an exit plan. You can utilize systems that will plan capacities and sort through callbacks. Systems will associate comparable capacities consequently — so you can track down an essential component via search or in an envelope. At that point, there’s no compelling reason to look through callbacks.

 

Final Words

So, these are some of the top benefits of Nodejs in web application development. This is how Nodejs is contributing a lot to the field of web application development. 

I hope now you are totally aware of the whole process of how Nodejs is really important for your web project. If you are looking to hire a node js development company in India then I would suggest that you take a little consultancy too whenever you call. 

Good Luck!

Original Source

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Hire Dedicated Node.js Developers - Hire Node.js Developers

If you look at the backend technology used by today’s most popular apps there is one thing you would find common among them and that is the use of NodeJS Framework. Yes, the NodeJS framework is that effective and successful.

If you wish to have a strong backend for efficient app performance then have NodeJS at the backend.

WebClues Infotech offers different levels of experienced and expert professionals for your app development needs. So hire a dedicated NodeJS developer from WebClues Infotech with your experience requirement and expertise.

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Node JS Development Company| Node JS Web Developers-SISGAIN

Top organizations and start-ups hire Node.js developers from SISGAIN for their strategic software development projects in Illinois, USA. On the off chance that you are searching for a first rate innovation to assemble a constant Node.js web application development or a module, Node.js applications are the most appropriate alternative to pick. As Leading Node.js development company, we leverage our profound information on its segments and convey solutions that bring noteworthy business results. For more information email us at hello@sisgain.com

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sophia tondon

sophia tondon

1625114985

Top 10 NodeJs app Development Companies- ValueCoders

Node.js is a prominent tech trend in the space of web and mobile application development. It has been proven very efficient and useful for a variety of application development. Thus, all business owners are eager to leverage this technology for creating their applications.

Are you striving to develop an application using Node.js? But can’t decide which company to hire for NodeJS app development? Well! Don’t stress over it, as the following list of NodeJS app development companies is going to help you find the best partner.

Let’s take a glance at top NodeJS application development companies to hire developers in 2021 for developing a mind-blowing application solution.

Before enlisting companies, I would like to say that every company has a foundation on which they thrive. Their end goals, qualities, and excellence define their competence. Thus, I prepared this list by considering a number of aspects. While making this list, I have considered the following aspects:

  • Review and rating
  • Enlisted by software peer & forums
  • Hourly price
  • Offered services
  • Year of experience (Average 8+ years)
  • Credibility & Excellence
  • Served clients and more

I believe this list will help you out in choosing the best NodeJS service provider company. So, now let’s explore the top NodeJS developer companies to choose from in 2021.

#1. JSGuru

JSGuru is a top-rated NodeJS app development company with an innovative team of dedicated NodeJS developers engaged in catering best-class UI/UX design, software products, and AWS professional services.

It is a team of one of the most talented developers to hire for all types of innovative solution development, including social media, dating, enterprise, and business-oriented solutions. The company has worked for years with a number of startups and launched a variety of products by collaborating with big-name corporations like T-systems.

If you want to hire NodeJS developers to secure an outstanding application, I would definitely suggest them. They serve in the area of eLearning, FinTech, eCommerce, Telecommunications, Mobile Device Management, and more.

  • Ratings: 4.9/5.0

  • Founded: 2006

  • Headquarters: Banja Luka, Bosnia, and Herzegovina

  • Price: Starting from $50/hour

Visit Website - https://www.valuecoders.com/blog/technology-and-apps/top-node-js-app-development-companies

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The  NineHertz

The NineHertz

1611828639

Node JS Development Company | Hire Node.js Developers

The NineHertz promises to develop a pro-active and easy solution for your enterprise. It has reached the heights in Node js web development and is considered as one of the top-notch Node js development company across the globe.

The NineHertz aims to design a best Node js development solution to improve their branding status and business profit.

Looking to hire the leading Node js development company?

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