Module: DynamicImage::Controller

Extended by:
ActiveSupport::Concern
Defined in:
lib/dynamic_image/controller.rb

Overview

DynamicImage Controller

Generating images is rather expensive, so all requests must be signed with a HMAC digest in order to avoid denial of service attacks. The methods in DynamicImage::Helper handles this transparently. As a bonus, this also prevents unauthorized URL enumeration.

Instance Method Summary collapse

Instance Method Details

#original ⇒ Object

Renders the original image data, without any processing.



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# File 'lib/dynamic_image/controller.rb', line 31

def original
  return unless stale?(@record)
  respond_to do |format|
    format.any(:gif, :jpeg, :png, :tiff) do
      send_data(
        @record.data,
        content_type: @record.content_type,
        disposition:  'inline'
      )
    end
  end
end

#requested_size ⇒ Object

Returns the requested size as a vector.



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# File 'lib/dynamic_image/controller.rb', line 45

def requested_size
  Vector2d.parse(params[:size])
end

#show ⇒ Object

Renders the image.



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# File 'lib/dynamic_image/controller.rb', line 21

def show
  render_image(format: requested_format)
end

#uncropped ⇒ Object

Same as show, but renders the image without any pre-cropping applied.



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# File 'lib/dynamic_image/controller.rb', line 26

def uncropped
  render_image(format: requested_format, uncropped: true)
end