Ask A Question


You’re not receiving notifications from this thread.

Is there a way to validate image uploads to validate dimensions?

Tom Dringer asked in Rails


I want to validate my image upload field by making a user upload only a square image (i.e 200px x 200px). I'm basically wanting square image dimentions so it will resize and nicely and not look disproportional. Can this be done? Thanks


If you are using ActiveStorage, check out this gem :

You can use square aspect validation on this gem : validates :avatar, aspect_ratio: :square


@axel kee how can I write model test for the aspect_ratio?

Join the discussion
Create an account Log in

Want to stay up-to-date with Ruby on Rails?

Join 78,890+ developers who get early access to new tutorials, screencasts, articles, and more.

    We care about the protection of your data. Read our Privacy Policy.

    Screencast tutorials to help you learn Ruby on Rails, Javascript, Hotwire, Turbo, Stimulus.js, PostgreSQL, MySQL, Ubuntu, and more.

    © 2023 GoRails, LLC. All rights reserved.