Add Objection

.env

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+DATABASE_URL=postgres://postgres:docker@localhost:5432/postgres

README.md

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 # Reducing mental fatigue: NestJS + Objection.js
 
+This is a companion repository for my article.
+
+Practical part of this article shows how to use NestJS with Objection.js ORM.
+There I've developed a toy API, which purpose is to show concepts I've described.
+
+## Prerequisites
+
 ## Hot to run
+
 - `npm i`
+- `npm run run:pg-docker`
+- `npm run migrate && npm run seed`
 - `npm run start`
 
 API is accessible at `http://localhost:3001`
 
 ## Example API requests
+
 ### Themes
+
 ```bash
 # findAll
 curl http://localhost:3001/api/themes
@@ -26,6 +38,7 @@ curl -X DELETE http://localhost:3001/api/themes/6
 ```
 
 ### Tags
+
 ```bash
 # findAll
 curl http://localhost:3001/api/tags
@@ -44,6 +57,7 @@ curl -X DELETE http://localhost:3001/api/tags/6
 ```
 
 ### Notes
+
 ```bash
 # findAll
 curl http://localhost:3001/api/notes

knexfile.ts

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+import 'dotenv/config';
+import * as Knex from 'knex';
+import { knexSnakeCaseMappers } from 'objection';
+
+module.exports = {
+  client: 'pg',
+  connection: process.env.DATABASE_URL,
+  migrations: {
+    directory: './src/database/migrations',
+    stub: './src/database/migration.stub',
+  },
+  seeds: {
+    directory: './src/database/seeds',
+    stub: './src/database/seed.stub'
+  },
+  ...knexSnakeCaseMappers()
+} as Knex.Config;