POS-Server/app/views/special_prices/create.js.erb

<% if @error.blank? %>
	//toastr["error"]("Error, El cliente ya tiene asignado el producto seleccionado.");

	var table = $('#products_table').DataTable();
	var newRow = '<%= j render (@special_price) %>';
	table.row.add($(newRow)).draw();

	//agregar variantes
	<% @variantes.each do |v| %>
		<% existing_variant = SpecialPrice.find_by_product_id(v) %> //ver si ya está agregado el producto
		  <% if existing_variant.blank? %>
			<% special_price = SpecialPrice.new %>
	        <% special_price.product_id = v.id %>
	        <% special_price.customer_id = @special_price.customer_id %>
	        <% special_price.user_id = current_user.id %>
	        <% special_price.save %>
	    	var newRow = '<%= j render (special_price) %>';
	    	table.row.add($(newRow)).draw();
	      <% end %>
    <% end %>
    //
<% else %>

//agregar variantes
	<% @variantes.each do |va| %>
		<% existing_variant = SpecialPrice.find_by_product_id(va) %> //ver si ya está agregado el producto
		<% if existing_variant.blank? %>
		  <% special_price = SpecialPrice.new %>
	      <% special_price.product_id = va.id %>
	      <% special_price.customer_id = @special_price.customer_id %>
	      <% special_price.user_id = current_user.id %>
	      <% special_price.save %>
	      var newRow = '<%= j render (special_price) %>';
	      table.row.add($(newRow)).draw();
      	<% end %>
    <% end %>
//
<% end %>