Display Backend Errors to the Frontend - DEV Community

Errors are awesome. Errors tell you that something needs to be fixed. If one would not have the error, it would be very frustrating as things would not work and we would not know why. The more specific an error is, the more helpful it is. The best errors are the ones that tell you what is wrong and what you can do to fix it.When users sign up for an account, or fill out a form on an app, there are (hopefully) validations being checked before a new instance is added to the database. If the data being submitted is not valid, the best case scenario would be for a very specific error message to show up on the screen and direct the user in what to do to submit their information correctly. In this post we will describe how to grab an error from a rails backend and conditionally display it on a react frontend.