AWS Deploying Rails 5.x on AWS ElasticBeanstalk using AWS CodeCommit How to deploy your Rails app on ElasticBeanstalk (including S3 buckets, security groups, load balancers, auto-scalling groups and more) using CodeCommit.
Ruby How to install Rails 6.x on a Mac We will use four different package managers to set up our environment. Homebrew [https://brew.sh/] is a package manager for Mac. We will use brew to install rbenv. rbenv [https://github.com/rbenv/rbenv] is a Ruby manager that makes it easy to install modern versions of the language.
Ruby Statistics: Calculating Mean, Median, Mode, Standard Deviation using Ruby, R, or Javascript Unsure what is mean median and mode? Here's how to find mean, median, mode and standard deviation using Ruby, R, and Javascript.
Radio Radio: Preparing WAV files for cloud-based radio The team at USC Radio Labs [http://www.uscradiogroup.org/labs] has been working to solve a pretty exciting problem: converting 60k+ audio files from WAV format to something more internet-ready. For context, in the 1990s, many radio stations started moving towards automating their music programming. The benefits were clear:
For Developers AWS: Using Rake Tasks to SSH into EC2 I work a lot with EC2 and one thing I always have to Google is how to SSH into an AMI, Ubuntu, Fedora, or CentOS instance. Part of the challenge is that the usernames slightly differ so I wrote this Rakefile to help me remember how to complete simple tasks.
Radio Radio: From WAV to FLAC with ID3 using Echoprint I'm currently learning about different ways to do music fingerprinting. In this article, I'm simply identifying how to do it using Echoprint. Here's how I did it. I used Ruby Rake to run command line scripts. You can certainly type these commands inside of Terminal but this method allows me
For Developers Rails: Troubleshooting Strategies There are about a dozen or so reasons why your Rails app might fail to load locally or on a host like Heroku. Below are a few common traps I often fall into (with solutions). 80% of the time, the problem has to do with the combination of Ruby, Rails,
Ruby Creating GIF previews out of MOV files Here's how to convert MOV files into animated GIF's for quick preview and e-mail friendly sharing.
For Developers AWS: Working with CodeCommit Elastic Beanstalk is a one-stop shop for Ruby on Rails developers to publish their apps. In this tutorial, I'll show you how to first commit your app to AWS CodeCommit so that you can then publish over to EB. There are a lot of steps so here's a high-level overview:
For Developers Ruby: Pathmap The Ruby library Rake has an awesome tool called Filelist that is great for manipulating files. For example, suppose you had an array of files with different path names, using the pathmap method, you can do some elegant file path parsing without the need for regular expressions. require 'rake' list
For Developers Rails: List Objects Using Rails Console I was looking for a way to get a collection of every model using the Rails console. Here are a few simple ways to do it. Step 0 If you do not have Ruby on Rails installed, please read this tutorial [https://www.chrisjmendez.com/2016/12/02/how-do-you-install-multiple-rails-versions-with-rbenv-2/] Step
For Developers Using Jenkins to Trigger Rake Tasks This tutorial [https://www.chrisjmendez.com/2017/01/08/installing-jenkins-using-virtualbox-and-vagrant/] will show you how to install Jenkins on Linux Debian using VirtualBox and Vagrant. After you've installed Jenkins server, make sure you have both ruby and rake installed by typing: Step 0 - Install Ruby and Rake which ruby which
For Developers Rails: Running a scheduler Heroku offer's a pretty nifty scheduler [https://elements.heroku.com/addons/scheduler] add-on for running jobs on your app at scheduled time intervals, much like cron in a traditional server environment. If you ever need to create something similar in a non-Heroku environment, here's how using whenever [https://github.com/
For Developers Rails: Order by DESC Three different ways to get data from a Model and group by descending order.
For Developers Ruby: Converting XML to JSON Today I was asked to convert an XML file full of e-mail addresses into JSON. I thought this solution might help others learn how to create an XML, parse it, and covert it over to JSON. This tutorial requires you to create four files: 1. my_app/Gemfile for managing
For Developers Rails: Database Relationships When dealing with relational databases –such as Postgresql, MySQL or AWS RDS– it helps to understand how tables interact with one another. This cheatsheet is is designed to remind me how to connect the dots between different tables using Rails command-line generators. For the past few years, I've been working
For Developers Heroku: Managing Multiple Accounts I feel like this is the first thing Heroku should tell you about after installing Toolbelt [https://devcenter.heroku.com/articles/heroku-cli]. For the longest time, I thought the only way to switch between different accounts was by logging out and logging back in. Here's how you can work with
For Developers Heroku: Upgrading your database Here's a process I've found for upgrading your database on Heroku. There are many more commands and I highly suggest reviewing the Heroku Documentation [https://devcenter.heroku.com/articles/heroku-postgres-backups]. First, check the status of your databse. heroku pg:info Set your app to maintenance mode. heroku maintenance:on Create
For Developers Heroku: Dynamically capture your Dyno URL Today I needed my Rails app to look at it's own production URL and capture the HOST information. After spending an hour looking for an answer, I found this very elegant answer. heroku config:set HEROKU_URL=$(heroku info -s | grep web_url | cut -d= -f2) Source [http://stackoverflow.com/
For Developers Rails: Populating Your Database using Seeds.rb When I'm building a new app, I prefer to populate my site with fake data so that I can see how the app actually starts responding to queries. There are a few examples of how I populate my rails app with development data. LOREM IPSUM The Easy Way Step 1
For Developers Ruby: Loops There are a lot of different ways to complete a loop. Here's a list of the most popular ones. Loop Loop in increments of 2 until x reaches 20. x = 0 loop do x += 2 break if x >= 20 puts x end Loop through in increments of 2 until you
For Developers Heroku: How to Publish an Existing Rails App With Rails 5, the deployment process to Heroku has gotten even easier. Here are the steps to publishing a new Heroku app without using a one-click install. STEP 1 - Create Rails App Make sure you have a Rails 5 app that uses a postgresql database. rails _5.0.0_
