CloudFlare + Azure Functions Custom Domain Setup

How to do it In CloudFlare, setup your DNS entry to look like this: The key part is, leaving the “cloud” set to DNS only (only for setup, you can enable CDN after setup). Once you do that, click “Validate” in Azure and you’ll get that “Domain Ownership” box

Serverless + Cloudflare Workers + NPM Modules

Here is how I got NPM modules working with Cloudflare workers + Serverless. 1. Install webpack npm install --save-dev webpack 1. Add a webpack config. webpack.config.js module.exports = { target: 'webworker' }; 1. Add build to your package.json "build": "webpack yourFunctionFile.js", 1. Update

Highlight.js with Webpacker and Rails

Key is: use the hightlightjs shim. Install it using yarn. yarn add highlightjs Inside one of your packs (or application.js), add: import hljs from 'highlightjs' hljs.initHighlightingOnLoad();

Quick tip for sending better Slack DMs

Quickly improve the effectiveness of your communication via Slack by making your messages actionable. Bad Hey, can you do me a favor? Better Hey, can you do me a favor? This user account is locked out. Best Hey, can you do me a favor? This user account is locked out

AWS Policy - Full S3 Access for a Single Bucket

I’ve found myself googling this every couple months. So I’m posting an example here to save you and myself in the future. If you’re creating an API user with full access to only a SINGLE S3 bucket, this example policy will work for you. If you want

Storing Emails in Postgres + Rails - Use Citext

Text fields in Postgres are case sensitive. This is a problem when storing emails because coutermarsh.mike@gmail.com and Coutermarsh.Mike@Gmail.com are not equal. If you do any lookups by email address, you have a few options. 1. always use downcase on write 2. use a functional

Selecting a value from JSONB - Postgres

Quick postgres tip. If you have a JSONB column named “options” and it has a key “favorite_color”. Here is an example on how you select the value from it: SELECT options->'favorite_color' FROM table_name; Filter by a jsonb value: SELECT COUNT(*) FROM table_name

Mistakes implementing avatars

In the past 3 years, we’ve gone through several iterations of how we host avatars on Product Hunt. There were a lot of mistakes. This is what I recommend doing if you’re adding avatars to your web app. Short version: 1. Upload the original image directly to S3.

Rails: Should I have a separate model for a user profile?

Every case is different. But I’d be wary of ever creating a dedicated model for a UserProfile. It sounds like a very general “throw everything here” type of model. Which is something you should avoid. It’s better to be very specific about the type of data being stored.

My Top 3 Rails Best Practices

Here are my top 3 suggestions to improve your Rails codebase. 1. Learn the presenter and service object patterns. This allows you to break down complex logic into small, self contained and easily tested classes. This makes writing/changing/reading code easy. Remember to namespace things and create clear separation

How do I know if I'll be interested in Computer Science?

Rails + Capybara + Selenium + Chrome Driver setup

Just setup our Capybara tests to use Chrome driver. Here is how I did it. First, added group :test do gem 'capybara' gem 'selenium-webdriver' gem 'chromedriver-helper' # <- New! end Then in the spec_helper.rb Capybara.register_driver :selenium do |app| Capybara::Selenium:

Rails Mailer Preview URL

The Rails mailer preview URL is impossible to remember. URL: http://localhost:3000/rails/mailers So I’m putting it here. Hopefully this just saved you time while googling. If you need more info about how to use previews. Read this.

Purge image from imgix with Ruby

Here’s how we purge images from imgix’s cache at Product Hunt with Ruby. If you’re googling around for a solution, hopefully this code helps you out. Imgix docs: https://docs.imgix.com/setup/purging-images # usage: Set env variable IMGIX_API_KEY to your api key # Need to

The IO object for media must respond to to_io

If you’re getting this error with the Twitter gem’s update_with_media method. And googling around for the solution. I’m here to help you. Twitter::Error::UnacceptableIO The IO object for media must respond to to_io Why this happens When you call open in Ruby with

Where can I find people to learn to code with?

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What is the best way to become a great programmer?

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Jr. Developers #6: You feel like you have no idea what you’re doing and that’s totally OK

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Rails + Storing User Settings — 2016 Edition

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How important is it to choose a first programming language?

Jr. Developers #5: How to Improve Code Without Anyone Hating You

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Jr. Developers #4: Don’t Be Afraid of Meetups

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Jr. Developers #3: Should I Learn X or Y?

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Jr. Developers #2: Think Small to Ship Fast

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A Ruby Developers Guide to Creating Node Modules

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