hegdemegha / WebApp-Workshop2

NodeJS workshop

One Day workshop on understanding the Nestjs framework and to build the basic CRUD operation with postgres database.

Prerequisite

1. Basic knowledge of docker and docker-compose
2. Basics of express-app
   1. Which is covered in Workshop 1 Go through this repo if you haven't completed it
3. preferred Tools:
   1. IDE: VS Code - Download Link
      Note: Install using apt
   2. API client for REST : Insomnia - Download link

Github - respository clone

1. Fork Workshop2 repository into your account.
2. Clone repo into your local machine run the follwing commands
   1. Create a folder GITHUB

   $ mkdir GITHUB
   $ cd GITHUB
   

   2. Clone your repository

   $ git clone [e-mail]:<your-username>/WebApp-Workshop2.git
   

   Note WebApp-Workhop2 folder is created.

   $ cd WebApp-Workshop2
   

   1. Add upstream

   $ git remote add upstream [e-mail]:UniCourt/WebApp-Workshop2.git
   

   1. Create a branch called dev in your local

   $ git fetch --all
   $ git checkout -b dev upstream/main
   

NestJS - Application setup with Docker

1. Open terminal and naviagte to /GITHUB/WebApp-Workshop2/

2. Build the docker images

   $ docker-compose build --no-cache
   

3. Setup Postgres

   1. Bring up the Postgres docker service

   $ docker-compose up -d service-workshop-postgres
   

   2. Import database schema

   $ docker exec -i workshop-postgres psql -h localhost -U workshop_user -d nest_app < database/master.sql
   

   3. You should get a message CREATE TABLE
   4. Verify by logging into the database

   $ docker exec -ti workshop-postgres psql -h localhost -U workshop_user -d nest_app
   
   nest_app=# \d
   

   5. Note: The command \d will list all the relations.

4. Bring up the NestJS Application

5. Open new tab in the terminal /GITHUB/WebApp-Workshop2/

6. Bring up the NestJS and Postgres application using docker-compose

   $ docker-compose up -d
   

7. Execute into NestJS container to run the server

   $ docker exec -ti workshop-nestjs /bin/sh
   
   /app # npm run start:dev
   

8. Open http://localhost:3000 on your browser

9. You will get a message

   Hello from NESTJS <3

10. To close the application open new tab in the terminal /GITHUB/WebApp-Workshop2/

    $ docker-compose down
    

What will you learn by the end of this workshop?

• By the end of this workshop you will understand Nest framework structure.
• Controller, Module and Service in NesjJS
• Connection to Database
• Basic CRUD operation with NestJS