Create a form style layout with filled in values for a PDF using Prawn

filledin_form.rb

require "prawn"

def form(pdf, fields)
  pdf.float do      
    pdf.bounding_box([5, pdf.cursor], width: 250, height: 200) do
      fields.keys.each do |label|
        pdf.pad(5) { pdf.text label }
      end
    end
  end

  pdf.bounding_box([260, pdf.cursor], width: 250, height: 200) do
    pdf.stroke_color "000000"
    fields.values.each do |value|
      pdf.fill_color  "ffffff"
      pdf.fill_and_stroke_rectangle([5, pdf.cursor], 240, 18) 
      fill_color  "000000"
      pdf.text_box value, at: [10, pdf.cursor - 5]
      pdf.move_down 24
    end
  end      
end

Prawn::Document.generate("filledinform.pdf") do
  move_down 5
  text "Application form", style: :bold, size: 25

  bounding_box([0,cursor], width: bounds.width, height: 120) do
    fill_color  "DCDCDC"
    fill_rectangle [0, cursor], bounds.right, bounds.top
    fill_color  "000000"
    transparent(0.5) { stroke_bounds }
    
    move_down 10
    
    form_fields = {
      "First name" => "John",
      "Last name" => "Doe",
      "Address line 1:" => "20 Shrimp lane",
      "Address line 2:" => ""
    }
    
    form(self, form_fields)
  end
      
end