This tutorial demonstrates how to connect to a Postgres database with knex.js.
It also demonstrates how to create database migrations with the knex.js migration tool.
This repository is contains the code for the Node knex.js tutorial on Youtube
Please also check out my website at jangoebel.com
For updates, please follow @_jgoebel on Twitter.
This application needs a local Postgres instance.
On macOS you can install Postgres with Homebrew.
brew install postgresql
and start it with
brew services start postgres
You can stop Postgres with
brew services stop postgres
For other operating systems, please check the Postgres website.
Make sure to update the configuration app with your database credentials in the ../db/knexfile.js file.
There you need to specify the user, password (per default no password required) and the database you want to connect to.
The default database we try to connect to is called knexjs_tutorial. Please make sure it exists in your local Postgres instance. You can either use a UI like PgAdmin to create the database or you can do so with psql
psql -h localhost -U <your-username> postgres
When installing locally, Postgres creates a database user with your operation system's username. You can run
whoami
on any Unix-like operating system to find out your user
Then you can create a new database with:
create database knexjs_tutorial;
Once you have installed Postgres and updated the credentials in the ./db/knexfile.js, you can run the initial migration
to create the database schema with.
npm run migrate
npm run dev