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Commitf834e4c

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‎.gitignore

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build
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node_modules
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package-lock.json

‎README.md

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#Typescript ORM with Postgres example
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Sequelize ORM using Typescript with Postgres database - CRUD operations example with Express REST API.
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For more detail, please visit:
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>[TypeScript ORM with Postgres example](https://www.bezkoder.com/typescript-orm-postgres/)
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>[Express Typescript example](https://www.bezkoder.com/express-typescript-example/)
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>[TypeScript ORM with MySQL example](https://www.bezkoder.com/typescript-orm-mysql/)
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##Project setup
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```
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npm install
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```
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###Run
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```
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npm run start
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```
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Front-end that works well with this Back-end
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>[Axios Client](https://www.bezkoder.com/axios-request/)
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>[Angular 8](https://www.bezkoder.com/angular-crud-app/) /[Angular 10](https://www.bezkoder.com/angular-10-crud-app/) /[Angular 11](https://www.bezkoder.com/angular-11-crud-app/) /[Angular 12](https://www.bezkoder.com/angular-12-crud-app/) /[Angular 13](https://www.bezkoder.com/angular-13-crud-example/) /[Angular 14](https://www.bezkoder.com/angular-14-crud-example/) /[Angular 15](https://www.bezkoder.com/angular-15-crud-example/) /[Angular 16 Client](https://www.bezkoder.com/angular-16-crud-example/)
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>[Vue 2 Client](https://www.bezkoder.com/vue-typescript-crud/) /[Vue 3 Client](https://www.bezkoder.com/vue-3-typescript-axios/)
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>[React Client](https://www.bezkoder.com/react-typescript-api-call/)
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##More Practice
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>[Node.js Express Pagination with PostgreSQL example](https://bezkoder.com/node-js-pagination-postgresql/)
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>[Node.js Express File Upload Rest API example](https://bezkoder.com/node-js-express-file-upload/)
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>[Node.js Express File Upload with Google Cloud Storage example](https://bezkoder.com/google-cloud-storage-nodejs-upload-file/)
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Security:
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>[Node.js JWT Authentication & Authorization with PostgreSQL example](https://bezkoder.com/node-js-jwt-authentication-postgresql/)
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Associations:
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>[Sequelize Associations: One-to-Many Relationship example](https://bezkoder.com/sequelize-associate-one-to-many/)
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>[Sequelize Associations: Many-to-Many Relationship example](https://bezkoder.com/sequelize-associate-many-to-many/)
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Fullstack:
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>[Vue + Node.js + Express + PostgreSQL example](https://www.bezkoder.com/vue-node-express-postgresql/)
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>[React + Node.js + Express + PostgreSQL example](https://www.bezkoder.com/react-node-express-postgresql/)
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>[Angular 8 + Node.js + Express + PostgreSQL example](https://www.bezkoder.com/angular-node-express-postgresql/)
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>[Angular 10 + Node.js + Express + PostgreSQL example](https://www.bezkoder.com/angular-10-node-express-postgresql/)
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>[Angular 11 + Node.js + Express + PostgreSQL example](https://www.bezkoder.com/angular-11-node-js-express-postgresql/)
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>[Angular 12 + Node.js + Express + PostgreSQL example](https://www.bezkoder.com/angular-12-node-js-express-postgresql/)
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>[Angular 13 + Node.js + Express + PostgreSQL example](https://www.bezkoder.com/angular-13-node-js-express-postgresql/)
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>[Angular 14 + Node.js + Express + PostgreSQL example](https://www.bezkoder.com/angular-14-node-js-express-postgresql/)
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>[Angular 15 + Node.js + Express + PostgreSQL example](https://www.bezkoder.com/angular-15-node-js-express-postgresql/)
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>[Angular 16 + Node.js + Express + PostgreSQL example](https://www.bezkoder.com/angular-16-node-js-express-postgresql/)
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Integration (run back-end & front-end on same server/port)
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>[Integrate React with Node.js Restful Services](https://bezkoder.com/integrate-react-express-same-server-port/)
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>[Integrate Angular with Node.js Restful Services](https://bezkoder.com/integrate-angular-10-node-js/)
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>[Integrate Vue with Node.js Restful Services](https://bezkoder.com/serve-vue-app-express/)

‎package.json

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{
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"name":"typescript-orm-postgres",
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"version":"1.0.0",
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"description":"Rest API using Node.js, TypeScript ORM Sequelize, Express, Postgres",
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"main":"server.ts",
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"scripts": {
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"test":"echo\"Error: no test specified\" && exit 1",
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"build":"tsc",
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"dev":"node ./build/server.js",
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"start":"tsc && npm run dev"
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},
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"keywords": [
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"nodejs",
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"typescript",
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"orm",
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"sequelize",
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"express",
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"postgres",
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"postgresql",
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"restapi",
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"rest",
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"api",
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"crud"
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],
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"author":"bezkoder",
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"license":"ISC",
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"devDependencies": {
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"@types/cors":"^2.8.13",
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"@types/express":"^4.17.17",
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"@types/node":"^20.4.2",
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"ts-node":"^10.9.1",
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"typescript":"^5.1.6"
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},
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"dependencies": {
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"cors":"^2.8.5",
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"express":"^4.18.2",
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"pg":"^8.11.1",
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"sequelize":"^6.32.1",
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"sequelize-typescript":"^2.1.5"
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}
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}

‎server.ts

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importexpress,{Application}from"express";
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importServerfrom"./src/index";
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constapp:Application=express();
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constserver:Server=newServer(app);
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constPORT:number=process.env.PORT ?parseInt(process.env.PORT,10) :8080;
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app
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.listen(PORT,"localhost",function(){
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console.log(`Server is running on port${PORT}.`);
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})
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.on("error",(err:any)=>{
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if(err.code==="EADDRINUSE"){
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console.log("Error: address already in use");
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}else{
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console.log(err);
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}
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});

‎src/config/db.config.ts

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exportconstconfig={
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HOST:"localhost",
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USER:"postgres",
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PASSWORD:"123",
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DB:"testdb",
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pool:{
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max:5,
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min:0,
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acquire:30000,
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idle:10000
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}
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};
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exportconstdialect="postgres";

‎src/controllers/home.controller.ts

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import{Request,Response}from"express";
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exportfunctionwelcome(req:Request,res:Response):Response{
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returnres.json({message:"Welcome to bezkoder application."});
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}
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import{Request,Response}from"express";
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importTutorialfrom"../models/tutorial.model";
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importtutorialRepositoryfrom"../repositories/tutorial.repository";
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exportdefaultclassTutorialController{
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asynccreate(req:Request,res:Response){
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if(!req.body.title){
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res.status(400).send({
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message:"Content can not be empty!"
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});
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return;
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}
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try{
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consttutorial:Tutorial=req.body;
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if(!tutorial.published)tutorial.published=false;
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constsavedTutorial=awaittutorialRepository.save(tutorial);
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res.status(201).send(savedTutorial);
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}catch(err){
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res.status(500).send({
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message:"Some error occurred while retrieving tutorials."
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});
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}
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}
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asyncfindAll(req:Request,res:Response){
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consttitle=typeofreq.query.title==="string" ?req.query.title :"";
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try{
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consttutorials=awaittutorialRepository.retrieveAll({ title});
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res.status(200).send(tutorials);
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}catch(err){
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res.status(500).send({
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message:"Some error occurred while retrieving tutorials."
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});
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}
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}
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asyncfindOne(req:Request,res:Response){
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constid:number=parseInt(req.params.id);
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try{
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consttutorial=awaittutorialRepository.retrieveById(id);
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if(tutorial)res.status(200).send(tutorial);
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else
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res.status(404).send({
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message:`Cannot find Tutorial with id=${id}.`
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});
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}catch(err){
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res.status(500).send({
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message:`Error retrieving Tutorial with id=${id}.`
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});
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}
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}
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asyncupdate(req:Request,res:Response){
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lettutorial:Tutorial=req.body;
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tutorial.id=parseInt(req.params.id);
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try{
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constnum=awaittutorialRepository.update(tutorial);
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if(num==1){
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res.send({
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message:"Tutorial was updated successfully."
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});
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}else{
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res.send({
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message:`Cannot update Tutorial with id=${tutorial.id}. Maybe Tutorial was not found or req.body is empty!`
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});
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}
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}catch(err){
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res.status(500).send({
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message:`Error updating Tutorial with id=${tutorial.id}.`
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});
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}
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}
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asyncdelete(req:Request,res:Response){
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constid:number=parseInt(req.params.id);
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try{
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constnum=awaittutorialRepository.delete(id);
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if(num==1){
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res.send({
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message:"Tutorial was deleted successfully!"
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});
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}else{
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res.send({
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message:`Cannot delete Tutorial with id=${id}. Maybe Tutorial was not found!`,
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});
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}
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}catch(err){
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res.status(500).send({
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message:`Could not delete Tutorial with id==${id}.`
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});
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}
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}
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asyncdeleteAll(req:Request,res:Response){
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try{
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constnum=awaittutorialRepository.deleteAll();
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res.send({message:`${num} Tutorials were deleted successfully!`});
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}catch(err){
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res.status(500).send({
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message:"Some error occurred while removing all tutorials."
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});
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}
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}
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asyncfindAllPublished(req:Request,res:Response){
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try{
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consttutorials=awaittutorialRepository.retrieveAll({published:true});
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res.status(200).send(tutorials);
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}catch(err){
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res.status(500).send({
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message:"Some error occurred while retrieving tutorials."
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});
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}
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}
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}

‎src/db/index.ts

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import{Sequelize}from"sequelize-typescript";
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import{config,dialect}from"../config/db.config";
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importTutorialfrom"../models/tutorial.model";
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classDatabase{
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publicsequelize:Sequelize|undefined;
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constructor(){
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this.connectToDatabase();
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}
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privateasyncconnectToDatabase(){
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this.sequelize=newSequelize({
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database:config.DB,
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username:config.USER,
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password:config.PASSWORD,
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host:config.HOST,
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dialect:dialect,
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pool:{
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max:config.pool.max,
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min:config.pool.min,
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acquire:config.pool.acquire,
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idle:config.pool.idle
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},
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models:[Tutorial]
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});
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awaitthis.sequelize
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.authenticate()
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.then(()=>{
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console.log("Connection has been established successfully.");
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})
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.catch((err)=>{
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console.error("Unable to connect to the Database:",err);
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});
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}
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}
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exportdefaultDatabase;

‎src/index.ts

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importexpress,{Application}from"express";
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importcors,{CorsOptions}from"cors";
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importRoutesfrom"./routes";
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importDatabasefrom"./db";
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exportdefaultclassServer{
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constructor(app:Application){
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this.config(app);
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this.syncDatabase();
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newRoutes(app);
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}
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privateconfig(app:Application):void{
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constcorsOptions:CorsOptions={
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origin:"http://localhost:8081"
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};
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app.use(cors(corsOptions));
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app.use(express.json());
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app.use(express.urlencoded({extended:true}));
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}
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privatesyncDatabase():void{
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constdb=newDatabase();
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db.sequelize?.sync();
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}
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}

‎src/models/tutorial.model.ts

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import{Model,Table,Column,DataType}from"sequelize-typescript";
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@Table({
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tableName:"tutorials",
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})
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exportdefaultclassTutorialextendsModel{
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@Column({
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type:DataType.INTEGER,
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primaryKey:true,
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autoIncrement:true,
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field:"id"
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})
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id?:number;
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@Column({
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type:DataType.STRING(255),
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field:"title"
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})
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title?:string;
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@Column({
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type:DataType.STRING(255),
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field:"description"
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})
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description?:string;
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@Column({
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type:DataType.BOOLEAN,
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field:"published"
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})
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published?:boolean;
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}

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