Rails - Paperclip - How to Check the Image Dimensions before saving

Yep! Here's a custom validation I wrote for my app, it should work verbatim in yours, just set the pixels to whatever you want. def file_dimensions dimensions = Paperclip::Geometry.from_file(file.queued_for_write[:original].path) self.width = dimensions.width self.height = dimensions.height if dimensions.width < 50 && dimensions.height < 50 errors.add(:file,'Width or height must be at least 50px')