Category Archives: Development

CircleCI, Rails 5, Minitest, and avoiding the OptionParser::InvalidOption exception

After updating a project to rails 5 I was no longer able to use the minitest-ci gem without making a few changes. My project was failing with the following exception: /home/ubuntu/ebth-com/vendor/bundle/ruby/2.2.0/gems/railties-5.0.1/lib/rails/test_unit/minitest_plugin.rb:57:in `plugin_rails_options’: invalid option: –ci-dir=/tmp/circle-junit.pSCJhIM/minitest (OptionParser::InvalidOption) To fix I basically had to override the test command so –ci-dir wouldn’t be specified. Here is the process… Read More »

VTDecoderXPCService using 100% of your CPU? Use cputhrottle

Since upgrading to macOS Sierra (10.12.1) I’ve been having problems with the VTDecoderXPCService process spinning out of control. Closing the Messages app will fix this, but inevitably starting Messages at a later time will cause the problem to resurface. I didn’t really want to fire up IDA Pro and dig into why VTDecoderXPCService was doing… Read More »

Check for a NULL/nil YAML value stored in a database column

I was trying to google for searching a database for a nil yaml value and it took me a bit so I thought I would post my findings. Basically if you do this in the rails console: nil.to_yaml you’ll receive: — \n…\n Kind of irritating when you’re trying to write a SQL query. So to… Read More »

Pinterest Chrome Extension – Disable “Pin It” on Hover

You can easily disable this as an individual who has installed the extension, but if you don’t want it to conflict with any other social software you may have on your site, all you need to do is add this to ever IMG tag: <img src=”myimage.jpg” data-pin-no-hover /> Or you can use nopin. Found in… Read More »

PostgreSQL + Chef – Automatically configure based on server RAM

I was sick of changing shared_buffers, effective_cache_size, maintenance_work_mem, work_mem, SHMMAX, SHMALL each time we’d spin up a new server. So I decided instead to have chef calculate it for me! It takes the available RAM of the server and then calculates each value based on: shared_buffers = 25% of maximum memory maintenance_work_mem = 10% of… Read More »

Ruby – Uploading files greater than 5GB to Amazon S3

I was struggling with finding a method to upload files greater than 5GB to S3 using the Amazon aws-s3 gem, then I came across this great post by Gavin. I’m adding the code here in case the site eventually goes down. All credit to Gavin! #!/usr/bin/env ruby # # Testing multipart uploads into s3 with… Read More »

Rails testing – Setup multiple databases when running rake spec

We currently have 2 databases for our application and I had a need to basically setup both databases, our test database, and another stats database. I also noticed an issue where running rake spec wouldn’t run in the test environment, which we always wanted it to run it. My solution is the below (Note: We… Read More »

Postgresql Activity Monitor Installation – pg_activity

Needed to install pg_activity on ubuntu 12.04 x64 and there were a decent amount of dependencies, here’s how to do it: sudo apt-get install git python2.7-dev libpq-dev python-setuptools git clone https://github.com/julmon/pg_activity.git cd pg_activity sudo python setup.py install sudo -u postgres pg_activity Done!

You tried to set `adapter` property to an instance of `DS.Adapter`, where it should be a name or a factory

We were running into this issue with our ember application and it turned out we just needed to set the adapter! See below: App.ApplicationAdapter = DS.RESTAdapter; Using ember data 1.0.0 beta 3 and ember 1.0

Interesting ruby error… Infinity instead of ZeroDivisionError

Did the internet just explode? >> ((1 – 0).to_f / 0.to_f) => Infinity >> (1 – 0)/0 !! #