app.js

var app = Davis(function () {

  this.configure(function () {
    this.linkSelector = 'nav a'
    this.formSelector = 'nav form'
  })

  this.get('/', function (req) {
    showHomePage()
  })

  this.get('/pay-bill', function (req) {
    showPayBillPage()
  })

  this.get('/send-money', function (req) {
    showSendMoneyPage()
  })

  this.get('/contact-us', function (req) {
    showContactPage()
  })

  this.get('/about-us', function (req) {
    showAboutPage()
  })

  this.get('/blog', function (req) {
    showBlog()
  })

  this.post('/search', function (req) {
    loadSearchResults(req.params['query'])
  })
})

nav.html

<nav>
  <ul>
    <li><a href="/">Home</a></li>
    <li><a href="/pay-bills">Pay Bills</a></li>
    <li><a href="/send-money">Send Money</a></li>
    <li><a href="/contact-us">Contact Us</a></li>
    <li><a href="/about-us">About Us</a></li>
    <li><a href="/blog">Blog</a></li>
    <li>
      <form action="/search" method="post">
        <input type="search" name="query" placeholder="Search…"></input>
      </form>
    </li>
  </ul>
</nav>

Hi Oliver, don't you think I should do a POST so that the server knows how to respond?

Which route do you think should be a POST? The search could either be a POST or a GET, it really depends on your app to be honest. I think the navigation links should definitly be GET requests as they are links, but again this is depends on how your app works.

As long as the routes you define in Davis match how the server responds then you should be fine, so if without Davis those navigation links make get requests then they should be get requests in davis too.