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

Tom Dringer asked in Rails

Hi,

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

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If you are using ActiveStorage, check out this gem : https://github.com/igorkasyanchuk/active_storage_validations

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

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

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