Getting width and height of image in model in the Ruby Paperclip GEM

Question

Trying to get the width and height of the uploaded image while still in the model on the initial save.

Any way to do this?

Here\'s the snippet of code I\'ve

Answer 1

class Asset

include Mongoid::Paperclip
before_save :extract_dimensions

field :width, type: Integer
field :height, type: Integer

has_mongoid_attached_file :data

  def extract_dimensions
    return unless is_image?

    tempfile = data.queued_for_write[:original]
    unless tempfile.nil?
      geometry = Paperclip::Geometry.from_file(tempfile)
      self.width = geometry.width.to_i
      self.height = geometry.height.to_i
    end

    true # wont save if false 
  end

  def is_image?
    data_content_type =~ %r{^(image|(x-)?application)/(bmp|gif|jpeg|jpg|pjpeg|png|x-png)$}
  end

end