Jamie's Blog

Lessons from a life of startups, coding, countryside, and kids

Deprecations header

Add Deprecation Warnings to your Rails App

You’ve probably seen deprecation warnings in Rails, especially if you made the jump to 5.2 recently, but did you know you can use them in your own app?

I suspected so but hadn’t done it before. Here’s a Rails model with a url attribute.

# == Schema...

Security Threats Introduced By GDPR

GDPR is supposed to protect the privacy of individuals but it also opens up new security threats which can threaten a company.

I’m not a lawyer, or any sort of GDPR expert, but like lots of people I’m becoming very interested in the GDPR rules as...

Heroku ci

Rails Testing with Headless Chrome on Heroku CI

I recently started setting up a Rails app on Heroku CI . It was mostly pretty painless but there were a few tricks to getting our Capybara specs running.

Heroku don’t fully support running browser tests yet; I mean, it works but it took a little finagling...


The one thing

I reached the end of the pool, finishing another 200m interval, and was taking a quick breather and a drink, before setting off again.

“Hi”, said the girl in the other lane. “Do you mind if I ask you a question?”


“What’s the one thing someone...


Does your backpack come with an instructional video?

Well, does it?

I mean, that would be pretty ridiculous, right? Who needs a video to learn how to use a backpack? How bad would a backpack need to be that it needs you to sit through a 30min —thirty minute— video to figure out how to use it.


Querying CSV files in SQL

I had a need to query a CSV file this morning. It was an export of users in Intercom and I wanted to find all the users with duplicate email addresses.


You can kinda do this in Numbers by creating a new column with the formula


Moving from Wordpress to Middleman

I’ve been unhappy running Wordpress for a few years, particularly the effort required to keep the server, the Wordpress instances, plugins, and themes updated. Of course, you don’t have to do this, and most of the internet doesn’t, which is why we...

Appy New Year

I looked back over the past year to find the new apps that changed the way I work, those that lived up to their promise, and those which have earned their place on my laptop (or iPhone, or web browser).

ZoomIt (mac)

A great little app for inspecting...


Microconf Europe 2015

Microconf Europe 2015

It’s been 3 weeks since Microconf Europe and I’m finally getting time to reflect on the experience. I felt like a seasoned veteran now that it was my second Microconf; last year’s conference in Prague was hand-down the best conference...

2015 07 02 at 23.00

Why Rollbar is the exceptional Exception Tracker

I’ve used a few exception trackers over the years: first Airbrake (I won a lifetime account way back when); BugSnag for about a year; and Rollbar for the past few years.1

What does an Exception Tracker do?

We all make mistakes. Sometimes we forget...

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