Palapa.rb

page :home do

  header do
    add_link 'Home',  to: :home
    add_link 'Posts', to: :posts
  end

  section :description, layout: :horizontal do
    section :image do
      add_image '/some/image'
    end
    
    section :text do
      add_paragraph %{ Lorem ipsum something something }
    end
  end
  
  section :contact do
    form :contact_form do
      text_input      :fullname
      email_input     :email
      textarea_input  :message
      
      submit do |data, ctx|
        # the code of this block will be executed on the server
        something(data[:email])
        something(data[:message])
        ctx.redirect :thank_you_page
      end
    end
  end
end

page :post, params: [:id] do |params|

  header do
    add_link 'Home',  to: :home
    add_link 'Posts', to: :posts
  end

  section :content do
    add_paragraph do
      Database.getPost(params[:id]).text # dynamic content
    end
  end
end