Multi Select Array - Form - Bootstrap Multiselect


I have a form where I can select one attribute and it passed on to my
database. Is there any way to make multiple attributes passed on to my
database just via a change in the form? Or would I have to create a new
model and have it pass through that way?

<div class="form-group">
    <%= f.label :kind %><br>
       <select class="multiselect">
          <%= :kind,
['tea','4'], ['wine','5'], ['juice','6']], class: "form-control" %>

I tried adding a multiselect gem:

and added the js as indicated here:

But for my "" button, not sure what I need to add? If I do the
option list as in the plugin documentation, how would I make it save to
:kind in my database?