Install pg-connection-string to parse db options from env variable (a…

…dpating to Heroku)

.example.env

@@ -1,3 +1,5 @@
 NODE_PORT=3000
 NODE_ENV=development
-JWT_SECRET=your-secret-whatever
+JWT_SECRET=your-secret-whatever
+DATABASE_URL=postgres://user:pass@localhost:5432/apidb
+TYPEORM_DRIVER_TYPE=postgres

package.json

@@ -56,6 +56,7 @@
     "koa-jwt": "^3.3.2",
     "koa-router": "^7.4.0",
     "pg": "^7.4.3",
+    "pg-connection-string": "^2.0.0",
     "reflect-metadata": "^0.1.12",
     "typeorm": "^0.2.6",
     "winston": "^2.4.2"

src/server.ts

@@ -6,22 +6,29 @@ import * as winston from 'winston';
 import * as dotenv from 'dotenv';
 import { createConnection } from 'typeorm';
 import 'reflect-metadata';
+import * as PostgressConnectionStringParser from 'pg-connection-string';
 
 import { User } from './entity/user';
 import { logger } from './logging';
 import { config } from './config';
 import { router } from './routes';
 
+// Load environment variables from .env file, where API keys and passwords are configured
+dotenv.config({ path: '.env' });
+
+// Get DB connection options from env variable
+const connectionOptions = PostgressConnectionStringParser.parse(process.env.DATABASE_URL);
+
 // create connection with database
 // note that its not active database connection
 // TypeORM creates you connection pull to uses connections from pull on your requests
 createConnection({
-    type: 'postgres',
-    host: 'localhost',
-    port: 5432,
-    username: 'user',
-    password: 'pass',
-    database: 'apidb',
+    type: process.env.TYPEORM_DRIVER_TYPE,
+    host: connectionOptions.host,
+    port: connectionOptions.port,
+    username: connectionOptions.user,
+    password: connectionOptions.password,
+    database: connectionOptions.database,
     synchronize: true,
     logging: false,
     entities: [
@@ -31,9 +38,6 @@ createConnection({
 
     const app = new Koa();
 
-    // Load environment variables from .env file, where API keys and passwords are configured
-    dotenv.config({ path: '.env' });
-
     // Provides important security headers to make your app more secure
     app.use(helmet());