[Rails] Assigning variables from controller to JavaScript

def show
    @location = Location.find(params[:id])
  end

<script>
  {
    const num1 = <%= @location.num1 %>   <%#Substitution%>
    const num2 = <%= @location.num2 %>   <%#Substitution%>


    var MyLatLng = new google.maps.LatLng(num1, num2);
    var Options = {
      zoom: 15, //Map scale value
      center: MyLatLng, //Map center coordinates
      mapTypeId: 'roadmap' //Map type
    };
    var map = new google.maps.Map(document.getElementById('map'), Options);
  }
</script>

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