Heroku Commands

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Mon Jun 14 2021 12:11:52 GMT+0000 (Coordinated Universal Time)

Saved by @hisam #heroku #nodejs #commandline

# Push the commit and update the deployed version on Heroku
git push heroku main

# Open the app in the browser (from terminal)
heroku open

#fetch heroku logs
heroku logs

#specify number of logs
heroku logs -n 200

#find all your fucking heroku deployment errors then cry yourself to sleep
heroku logs --tail

# Open the terminal in the app dyno in Heroku
heroku run bash
 
# Run a file 
node seeds/index.js

COPY

Heroku is terrifying, here's some commands

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#html #javascript #nodejs

How to Save HTML Form Data in JSON - Express

<form action="/new" method="post">
 
  <input name="title" type="text">
  <input name="description" type="text">
  <button type="submit">Submit Form</button>
 
</form>

> More steps

#javascript #nodejs #commandline

HTTPS Redirect in Nodejs

npm install heroku-ssl-redirect

> More steps

#javascript #nodejs

Save to MongoDB without Duplicates Using Mongoose

var mongoose = require('mongoose');
var Schema = mongoose.Schema;

const exampleSchema = new Schema({
    title: { type: String , required: true},
    content: [{type: String}]
});


var Example = mongoose.model('Example', exampleSchema);
module.exports = Example;

> More steps

#commandline #interesting #windows #ubuntu #linux

Useful snippet to easily access Ubuntu from Windows (in WSL2)

ip addr | grep eth0 | grep inet | awk '{print $2}' | awk -F '/' '{print $1}' | awk '{printf "%s:3000", $0}' | clip.exe

#commandline #interesting #cyberattacks #security #unix

The Fork-bomb: the One-Line Virus of colons and brackets that would crash a Unix system

: ( ) { : | : & } ; :

#nodejs

Express Post Request to Edit Post

router.post('/:id/edit', auth.requireLogin, (req, res, next) => {
  Post.findByIdAndUpdate(req.params.id, req.body, function(err, post) {
    if(err) { console.error(err) };

     res.redirect(`/`+req.params.id);
  });
});

#nodejs

Memcached Cloud session store with express-session to preserve sessions off-server

var express = require("express");
var app = express();
const session = require('express-session');
var MemcachedStore = require('connect-memjs')(session);

// configure sessions
var store = new MemcachedStore({servers: [process.env.MEMCACHEDCLOUD_SERVERS], username: process.env.MEMCACHEDCLOUD_USERNAME, password: process.env.MEMCACHEDCLOUD_PASSWORD});
app.use(session({ secret: 'keyboard cat',
   resave: true,
   saveUninitialized: true,
   cookie: { secure: true }, 
   store: store
}))

#javascript #nodejs

Slugify a Field in Mongoose Schema

var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var slug = require('mongoose-slug-generator');

mongoose.plugin(slug);

const pageSchema = new Schema({
    title: { type: String , required: true},
    slug: { type: String, slug: "title" }
});

var Page = mongoose.model('Page', pageSchema);
module.exports = Page;

#commandline #git #github #howto

Cloning a Github Repository with git

$ git clone https://github.com/YOUR-USERNAME/YOUR-REPOSITORY

#javascript #nodejs #handlebars #express

Pagination Helper for Handlebars - Node.js Express

https://gist.github.com/trantorLiu/5924389

#sql #nodejs

javascript - Import sql file in node.js and execute against PostgreSQL - Stack Overflow

function processSQLFile(fileName) {

  // Extract SQL queries from files. Assumes no ';' in the fileNames
  var queries = fs.readFileSync(fileName).toString()
    .replace(/(\r\n|\n|\r)/gm," ") // remove newlines
    .replace(/\s+/g, ' ') // excess white space
    .split(";") // split into all statements
    .map(Function.prototype.call, String.prototype.trim)
    .filter(function(el) {return el.length != 0}); // remove any empty ones

  // Execute each SQL query sequentially
  queries.forEach(function(query) {
    batch.push(function(done) {
      if (query.indexOf("COPY") === 0) { // COPY - needs special treatment
        var regexp = /COPY\ (.*)\ FROM\ (.*)\ DELIMITERS/gmi;
        var matches = regexp.exec(query);
        var table = matches[1];
        var fileName = matches[2];
        var copyString = "COPY " + table + " FROM STDIN DELIMITERS ',' CSV HEADER";
        var stream = client.copyFrom(copyString);
        stream.on('close', function () {
          done();
        });
        var csvFile = __dirname + '/' + fileName;
        var str = fs.readFileSync(csvFile);
        stream.write(str);
        stream.end();
      } else { // Other queries don't need special treatment
        client.query(query, function(result) {
          done();
        });
      }
    });
  });
}

#bcrypt #authentication #express #nodejs #password

Async function for bcrypt.compare()

const comparePassword = async (password, hash) => {
    try {
        // Compare password
        return await bcrypt.compare(password, hash);
    } catch (error) {
        console.log(error);
    }

    // Return false if error
    return false;
};

//use case
(async () => {
    // Hash fetched from DB
    const hash = `$2b$10$5ysgXZUJi7MkJWhEhFcZTObGe18G1G.0rnXkewEtXq6ebVx1qpjYW`;

    // Check if password is correct
    const isValidPass = await comparePassword('123456', hash);

    // Print validation status
    console.log(`Password is ${!isValidPass ? 'not' : ''} valid!`);
    // => Password is valid!
})();

#mbpfan #ubuntu20.04 #commandline #macbookpro #terminal #fanspeed

A beginner's tutorial for mbpfan under Ubuntu - I need coffee ☕️

https://ineed.coffee/Old+Posts/A+beginner's+tutorial+for+mbpfan+under+Ubuntu

#heroku #seed #nodejs

Seed db after deploying app to Heroku

# Open the terminal in the app dyno in Heroku

heroku run bash

 

# We may then run the seed file

node bin/seed.js

#nodejs #mongoose #mongodb

Split the customerName into firstName..the fisrt letter..the first index

db.customers.updateMany({},
  [{ $set : { m : {$arrayElemAt:[{ $split: ["$customerName", " "] },0]}} }],

);

Heroku Commands

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