faq/app/views/admin/faqs/order.html.erb

<% content_for :page_specific_css do %>
  <%= stylesheet_link_tag "admin/faqs" %>
<% end %>
<div class="order-edit-notification">Please click "Save Order" button when you are done.</div>
<table width="100%" id="web_resource_order_table" class="table table-striped" class="web_soursce_table">
	<thead>
		<tr>
			<th>Position</th>
			<th>Link</th>
	</thead>
	<tbody>
		<% @qas.each_with_index do |qa,i| %>
			<tr>
				<td class="position-text">
					<div class="position-text-div" data-value="<%= (i + 1).to_s %>"><%= (i + 1).to_s  %></div>
				</td>
				<td>
					<div class="link-text-id" data-link-id="<%= qa.id.to_s %>"><%= qa.title %></div>
				</td>
			</tr>
		<% end %>
	</tbody>
</table>
<div class="bottomnav clearfix" style="left: 81px;">
    <div class="action pull-right">
    <a class="btn btn-info disabled" id="save-order-button" href="#">Save Order</a>
    </div>
    <div class="pagination pagination-centered"></div>
  </div>
<script type="text/javascript">

	var makeEditable = function(){
		var input_box = $("<input type='text'/>"),
			el = $(this);
		input_box.addClass("editable-input");
		input_box.val(el.data("value"));
		input_box.attr("data-old-id",el.data("value"));
		input_box.on("blur",function(){
			putBackdiv($(this));
		});
		input_box.on("keypress",function(e){
			if(e.keyCode == 13 || e.keyCode == 27){
				putBackdiv($(this),e.keyCode);
			}
		})
		el.parent().html(input_box);
		input_box.focus();
	}

	var putBackdiv = function(el,keyCode){
			current_value = parseInt((el.val() == "" ? el.data("old-id") : el.val())),
			old_value = parseInt(el.data("old-id"));
			if(isNaN(current_value) || keyCode == 27){
				current_value = old_value;
			}
		if(old_value != current_value){
			var new_index_value = (current_value > old_value ? current_value + 1 : current_value - 1),
				div = $("<div class='position-text-div' data-value='" + current_value + "'>" + new_index_value + "</div>");
			div.on("click",makeEditable);
			el.parent().html(div);
			$("#save-order-button").removeClass("disabled");
			$(".order-edit-notification").slideDown();
			sortTable(el.data("old-id"),current_value);
		}else{
			var div = $("<div class='position-text-div' data-value='" + current_value + "'>" + current_value + "</div>");
			div.on("click",makeEditable);
			el.parent().html(div);
		}
	}

	var sortTable = function(changed_index,changed_to){
		var table_element = document.getElementById("web_resource_order_table"),
			data = [],
			allRows = table_element.rows;
		for(i = 1; i < allRows.length; i++){
			var thisRow = allRows[i],
				text = thisRow.cells[0].textContent.trim(),
				hash = {};
			hash.index = parseInt(text);
			text = thisRow.cells[1].innerHTML.trim();
			if(text != "&nbsp;"){
				hash.link = text;
			}
			data.push(hash);
		}
		data = data.sort(function(a,b){return a.index - b.index});
		renderSortedTable(data,table_element);
	}

	var renderSortedTable = function(data,table_element){
		var allRows = table_element.rows;
		for(i = 0;i < data.length; i++){
			var thisRow = allRows[i + 1],
				current_value = i + 1;
			thisRow.cells[0].innerHTML = "<div class='position-text-div' data-value='" + current_value + "'>" + current_value + "</div>";
			thisRow.cells[1].innerHTML = data[i].link;
		}
		$("#web_resource_order_table div.position-text-div").on("click",makeEditable);
	}

	$("#save-order-button").on("click",function(){
		var el = $(this);
		if(!el.hasClass("disabled")){
			var data = [];
			$("#web_resource_order_table .link-text-id").each(function(){
				data.push($(this).data("link-id"));
			})
			$.ajax({
				url : "/admin/faqs/updateorder",
				data : {"order" : data},
				dataType : "json",
				type  : "post"
			}).done(function(){
				el.addClass("disabled");
				$(".order-edit-notification").slideUp();
			})
		}
		return false;
	})

	$("#web_resource_order_table div.position-text-div").on("click",makeEditable);

</script>