activeadmin adding datepicker
<p>I'm working with rails' activeadmin and creating a custom form like so: </p>

<pre><code>&lt;%= semantic_form_for [:admin, Client.find(@wedding_cake.client_id), @wedding_cake] do |f| %&gt;
</code></pre>

<p>than I want to add an input for a date like so: </p>

<pre><code>&lt;%= f.input :date, as: :datepicker %&gt;
</code></pre>

<p>However, I'm getting "Unable to find input class for datepicker" from rails.
I've tried including jquery date picker in my gem file, but that didn't change anything. What am I doing wrong?</p>