rxctionzz / GoPostgresAPI

Building and implementing REST API with Test Driven Development using Go with Gorilla Mux and PostgreSQL. Includes DB Migrations and CI integrated automated tests as well.

Packages to get mux and pg driver:

go get -u github.com/gorilla/mux

go get -u github.com/lib/pq

https://dev.to/techschoolguru/how-to-write-run-database-migration-in-golang-5h6g

Guide:

https://semaphoreci.com/community/tutorials/building-and-testing-a-rest-api-in-go-with-gorilla-mux-and-postgresql

MIGRATIONS

Source: https://github.com/golang-migrate/migrate/blob/master/database/postgres/TUTORIAL.md

-> Download the migrate command line for windows from: https://github.com/golang-migrate/migrate/releases/tag/v4.14.1

-> Set the POSTGRESQL_URL environment variable for migrate cli to create migrations for us. export POSTGRESQL_URL='postgres://mux:password@localhost:5432/mux_db?sslmode=disable'

-> Now we need to create up and down files for a table that our application needs. This CLI tool will create it for us

mkdir migrations && cd migrations

migrate create -ext sql -dir ./ -seq create_products_table

This will generate two files:

000001_create_products_table.up.sql & 000001_create_products_table.up.sql

-> Now add SQL in these files (create table and drop table sql)

-> Now use migrate CLI to run these migrations.

migrate -database ${POSTGRESQL_URL} -path <path_to_migration_files> up

OR migrate -database ${POSTGRESQL_URL} -path <path_to_migration_files> down

-> Now check if the table was created:

psql mux_db -c "\d products"

psql <db_name> -c "\d <table_name>"