POS-Server/app/views/sales/_add_haggle.html.erb

<!-- BEGIN FORM-->
<%= form_for(@pre_sale, url: create_haggle_path(@pre_sale), :remote => true, :html => {:class=>"form-horizontal"}) do |f| %>
<div class="portlet-body form">
    <% if @pre_sale.errors.any? %>
        <div class="alert alert-danger">
            <strong>Tiene <%= pluralize(@product.errors.count, "error") %> no se puede guardar el descuento a producto.</strong><br>
        </div>
    <% end %>
    <div class="form-body">
        <div class="row">     
            <div class="col-md-12">
                <p style="margin-top:0px;">
                    Producto: <strong> <%= @pre_sale.product.name  %> </strong> <br>
                    Precio de venta: <strong> <%= number_to_currency(@pre_sale.unit_price, precision: 2) %> MXN </strong>
                </p>
                <div class="form-group">
                   <%= label_tag :haggle,  {:class=>"col-md-4 control-label"} do %>Descuento a aplicar
                    <span class="required">*</span>
                  <% end %> 
                    <div class="col-md-6">
                        <div class="input-group">
                            <span class="input-group-addon"> $ </span>
                            <%= text_field_tag :haggle, @suggested_haggle, class: "form-control input-mask_decimal" %>
                            <span class="input-group-addon"> MXN </span>
                        </div>
                        <span class="help-block">El descuento que se muestra es el sugerido en base al establecido en la configuración.</span>  
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>
<div class="form-actions">
    <h4 class="form-section"> </h4>
    <div class="row">
        <div class="col-md-12">
            <button type="submit" class="btn green" >Aplicar descuento</button>
            <button type="button" class="btn default" onclick="cerrarDialog()">Cerrar</button>
        </div>
    </div>
</div>
<% end %>
<script>
    function cerrarDialog() {
        $('#dialog').modal('toggle');
    }
</script>