rails gem prawn, image and anchor

Question

Can you tell me how to insert image which will be a link to for example page 20? I know how to make with normal text:

text \"Go to          


        

Answer 1

Partly thanks to lightswitch05 for some prodding in the right direction, I've found a way to get the effect I want through this inelegant way:

• Insert an image in a bounding_box (the page cursor is at this point at the bottom of the image)
• Move the cursor back up to the top of the image
• Insert a text link over the image (in my case I just used however many vertical bars '|' were needed to cover the image)
• Confirm visually that the clickable link area is about the same as the boundaries of the image
• Make the text link transparent, and voilà, it looks like you're clicking the image.

Here's some example code (measurements not exact; there was a lot of tweaking involved):

bounding_box([0, cursor], width: 35) do
  image open("http://mysite.com/remote_image.jpg"), 
        fit: [35, 35], 
        align: :center
  move_up 35
  transparent(0) do
    formatted_text([{
      text: "|||", # placeholder
      size: 40,
      link: "http://example.com/"
    }], align: :center)
  end
  # stroke_bounds
end

Needless to say, this experience has got me looking a bit more at Wicked PDF in order to do what I think I want to do with PDFs.

I'm sure a better/more elegant solution exists, so I'm not planning on considering this my final answer.