title: Ruby on Rails: Get next item in model
body: <p>Say I have simply ran <code>rails g scaffold book name:string about:text</code> On the 'show' view, how would I implement a button to go to the next item in the model. </p>
  
  <p>I can't simply do <code>@next = @book.id + 1</code> because if <code>@book.id = 2</code> (for example) and I clicked destroy on the book with an id of 3. It would result in a broken page.</p>