PostgreSQL 9.6.1数据库不显示在Heroku应用程序

我在Herokutesting应用程序中configuration了一个PostgreSQL数据库。 导航到URL / db不显示testing数据库,返回错误不能GET / db

Papertrail日志条目:

https://papertrailapp.com/systems/glacial-bayou-96122/events?focus=833501717949202435&selected=833501717949202435

我已经包括了我提供数据库的步骤,并在下面列出了相关的代码。

我已经更新了我的package.json文件来添加pg npm module

 { "name": "node-js-getting-started", "version": "0.2.6", "description": "A sample Node.js app using Express 4", "engines": { "node": "6.11.1" }, "main": "index.js", "scripts": { "start": "node index.js", "test": "node test.js" }, "dependencies": { "ejs": "2.5.6", "express": "4.15.2" }, "dependencies": { "pg": "6.x", "ejs": "2.5.6", "express": "4.15.2", "cool-ascii-faces": "1.3.4" }, "devDependencies": { "request": "^2.81.0", "tape": "^4.7.0" }, "repository": { "type": "git", "url": "https://github.com/heroku/node-js-getting-started" }, "keywords": [ "node", "heroku", "express" ], "license": "MIT" } 

跑了npminstall

并更新我的index.js文件:

 var express = require('express'); var app = express(); var pg = require('pg'); app.set('port', (process.env.PORT || 5000)); app.use(express.static(__dirname + '/public')); // views is directory for all template files app.set('views', __dirname + '/views'); app.set('view engine', 'ejs'); app.get('/', function(request, response) { response.render('pages/index'); }); app.get('/cool', function(request, response) { response.send(cool()); }); app.get('/times', function(request, response) { var result = '' var times = process.env.TIMES || 5 for (i=0; i < times; i++) result += i + ' '; response.send(result); }); app.get('/db', function (request, response) { pg.connect(process.env.DATABASE_URL, function(err, client, done) { client.query('SELECT * FROM test_table', function(err, result) { done(); if (err) { console.error(err); response.send("Error " + err); } else { response.render('pages/db', {results: result.rows} ); } }); }); }); app.listen(app.get('port'), function() { console.log('Node app is running on port', app.get('port')); });