Knowledge Factory

Here’s how you can build RESTful CRUD APIs using Ktor and MongoDB for a basic application: Step 1: Create Ktor Project Set Up Dependencies in your build.gradle.kts : dependencies { implementation( "io.ktor:ktor-server-core:2.3.3" ) implementation( "io.ktor:ktor-server-netty:2.3.3" ) implementation( "org.mongodb:mongodb-driver-sync:4.10.2" ) implementation( "ch.qos.logback:logback-classic:1.4.11" ) } Main Application File (Application.kt) : import io.ktor.application.* import io.ktor.features.ContentNegotiation import io.ktor.http.HttpStatusCode import io.ktor.jackson.jackson import io.ktor.response.respond import io.ktor.routing.* import io.ktor.server.engine.embeddedServer import io.ktor.server.netty.Netty import io.ktor.features.StatusPages import org.litote.kmongo.* import io.ktor.request.receive import io.ktor.http.HttpMethod // MongoDB client setup val client = KMongo.createClient() val database = client.ge...

To implement a basic CRUD (Create, Read, Update, Delete) application in Node.js using Next.js and MongoDB, follow these steps: Step 1: Set up a Next.js project Create a Next.js project (if you haven't already): npx create- next -app @latest nextjs-mongo-crud cd nextjs-mongo-crud Install necessary dependencies: npm install mongoose Step 2: Set up MongoDB connection Create a .env.local file in the root of your project and add your MongoDB connection string: MONGODB_URI= mongodb: //localhost:27017/your-database-name Create a utility file to manage the MongoDB connection. Create a new file lib/mongodb.js : import mongoose from 'mongoose' ; const connectToDatabase = async () => { if (mongoose.connection.readyState >= 1 ) { return ; } await mongoose.connect(process.env.MONGODB_URI, { useNewUrlParser: true , useUnifiedTopology: true , }); }; export default connectToDatabase; Step 3: Create a Mongoose Model Define a model for the data you want...

To create a CRUD application using Spring Boot and Next.js with MongoDB, you'll need to build the backend with Spring Boot to handle the database operations and the frontend with Next.js for the UI. Here's a step-by-step guide to set this up: 1. Set up Spring Boot Backend (Spring Boot + MongoDB) Dependencies (pom.xml) First, add the necessary dependencies to your pom.xml file. < dependencies > <!-- Spring Boot Starter Web --> < dependency > < groupId > org.springframework.boot </ groupId > < artifactId > spring-boot-starter-web </ artifactId > </ dependency > <!-- Spring Boot Starter Data MongoDB --> < dependency > < groupId > org.springframework.boot </ groupId > < artifactId > spring-boot-starter-data-mongodb </ artifactId > </ dependency > <!-- Spring Boot Starter Test (Optional) --> < depend...

Here’s a step-by-step guide to building a Spring Boot Reactive MongoDB React.js CRUD application: 1. Backend: Spring Boot Reactive MongoDB Setup the Spring Boot Project Dependencies : Spring WebFlux (for reactive programming) Spring Data Reactive MongoDB Lombok (optional) Spring Boot DevTools (for easier development) Example pom.xml dependencies: <dependencies> <dependency> <groupId> org.springframework.boot </groupId> <artifactId> spring-boot-starter-webflux </artifactId> </dependency> <dependency> <groupId> org.springframework.boot </groupId> <artifactId> spring-boot-starter-data-mongodb-reactive </artifactId> </dependency> <dependency> <groupId> org.projectlombok </groupId> <artifactId> lombok </artifactId> <optional> true </optional> </dependency> <dependen...

To create a registration and login system using Node.js and Angular,  follow these steps. This guide assumes you have Node.js , Angular , and MongoDB (for storing user data) installed. 1. Set up the Backend (Node.js with Express) a. Initialize Node.js project Create a new directory for your project and navigate into it. mkdir node -angular-auth cd node -angular-auth Initialize a new Node.js project. npm init -y Install necessary packages. npm install express mongoose bcryptjs jsonwebtoken body-parser cors b. Create the server In the root directory, create a server.js file. // server.js const express = require ( 'express' ); const mongoose = require ( 'mongoose' ); const cors = require ( 'cors' ); const bodyParser = require ( 'body-parser' ); const User = require ( './models/User' ); const jwt = require ( 'jsonwebtoken' ); const bcrypt = require ( 'bcryptjs' ); const app = express(); const PORT = process.env.PORT ||...