Simple SelectView: Triggers Event and Returns Model When Chosen http://www.beardedhacker.com/blog/2015/05/13/simple-selectview-triggers-event-and-returns-model-when-chosen/

index.html

<header>

<script type="text/html" id="options-template">
    <% for (i = 0; i < items.length; i++) { %>
        <option value="<%= items[i].id %>"><%= items[i].value %></option>
    <% } %>
</script>

</header>

select_view.js

var SelectView = Marionette.ItemView.extend({
    template: "#options-template",
    tagName: "select",

    events: {
        'change' : 'optionSelected'
    },

    optionSelected: function(e){
        this.trigger('item:chosen', this.collection.get(e.target.value));
    }
});