Ecto Stale Entry Error – Solving This Cryptic Elixir Error

The Ecto stale entry error (Ecto.StaleEntryError) is one of the more cryptic errors you'll see in Elixir. Elixir is pretty good about providing helpful error messages and information, but this one left me scratching my head. Until I figured out one simple cause of the Ecto stale entry error. Ecto Update If you are using Ecto's update/2 callback, you may have come across this error. To get to the...