Rails on Nicholas Shirley

Verify That an ActiveRecord Object has at Least One Attribute

Thu, 09 May 2019 09:04:42 +0000

Rails ActiveRecord callbacks make validation a breeze, but what happens if you want to verify that a record has at least one attribute present, but you don’t care which attribute it is? This was a recent case I was working on for a client who was having their operators fill in a form with a lot of uncertainty. They couldn’t know which record would be needed, but we didn’t want to allow all records to be blank.

Re-associate ActiveStorage attachments after changing a table name

Thu, 26 Apr 2018 13:51:52 +0000

Sometimes you have to change a table name. When you do, don’t forget to update ActiveStorage relationships otherwise your files will be orphaned.

Deleting ActiveStorage Attachments From the Controller, 3 Ways

Thu, 19 Apr 2018 20:04:41 +0000

ActiveStorage in Rails 5.2 is awesome, but where do handle deleting attachments on the controller? Here are some possible options.

Retrieve Associated Parent Attributes from Child Record in Rails

Fri, 13 Apr 2018 12:44:05 +0000

Calling attributes of associated records isn’t “directional”. Or, how I learned to stop worrying and love foreign keys.

Error Better: Effectively Utilize Active Model Errors with Rails in API Mode

Mon, 26 Mar 2018 08:39:54 +0000

Go beyond delivering just full_messages in Rails to send well formatted error messages using Rails API

Using Font Awesome 5 in the Rails Asset Pipeline with Turbolinks

Mon, 26 Feb 2018 20:05:26 +0000

Want to use Font Awesome 5 with the Rails Asset Pipeline and Turbolinks? Read on to find out what you need.

User authorization without cancan(can)

Wed, 21 Feb 2018 18:42:27 +0000

Building custom user authorization that integrates into Devise’s current_user helper.