How to retrieve EXIF information of an image in Rails

Question

I am using Rails paperclip for displaying the images in my page. I want to know how to retrieve EXIF information of an image(like dimensions, camera model,height,width., etc).Ca

Answer 1

after_photo_post_process :copy_exif_data 
  private 
  def copy_exif_data 
    exif =EXIFR::JPEG.new(photo.queued_for_write[:original]) 
    self.exif_value = exif
  end 

This is working code which i am used.