Need help fixing ColdFusion/JQuery based drag n' drop reordering of items

Need help fixing ColdFusion/JQuery based drag n' drop reordering of items


I'm trying to get a ColdFusion/JQuery based example of drag n' drop
reordering of items working, but am encountering some difficulty. A
non-working example (and the underlying source code) can be viewed at
the following url:
http://www.carolinegleason.com/test.cfm?add=true&cat=men&ID=18&thumb
Additionally -- the non-rendered source code is attached (see code
snippet below)
Can anywhere here identify specifically why my list items aren't drag
n' droppable?
My unrendered CFML, XHTML, and Javascript is below.
Thanks,
- Yvan
------- BEGIN CFML CODE ---------
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>TITLE</title>
<meta http-equiv="Content-Type" content="text/html;
charset=iso-8859-1">
<cfajaxproxy cfc="reorder" jsclassname="myProxy">
<link type="text/css" href="admin/css/ui-lightness/jquery-
ui-1.7.2.custom.css" rel="stylesheet" />
<script type="text/javascript" src="admin/js/jquery-1.3.2.min.js"></
script>
<script type="text/javascript" src="admin/js/jquery-
ui-1.7.2.custom.min.js"></script>
<script type="text/javascript">
// this creates an instance of the js proxy to cfc which we created
with cfajaxproxy //
var p = new myProxy();
// this jQuery function executes after page DOM is loaded
$(document).ready(function(){
$("ul.items").disableSelection(); // this disables selection of item
name text. not necessary, but a nice touch when you use Sortable
var $items = $("ul.menuitems"); // this is jQuery object of our
items' container
initSortablesArray($items, 'li', '#tabs', 'y',
'updateItemsOrder'); //initialize Sortable for our items container
});
// this function creates the Sortable for items
var initSortablesArray = function($arrEl, sortItems, sortContainer,
sortAxis, fnCallback) {
$arrEl.each(function() {
var $el = $(this);
$el.sortable({
items: sortItems, // element to be dragged, <li> in this example
containment: sortContainer, // element dragging is contained to,
div id="tabs" in this example
axis: sortAxis, // axis to allow dragging along, Y in this
example
update: function(event, ui){ // this function fires after an
item changes its position/order after drag
var arrOrder = $el.sortable('toArray'); //serialize the items
into array
console.log(arrOrder); //debug: will display the serialized
array of item in Firebug console - remove when everything is working
var fnToExecute = fnCallback+"('"+arrOrder+"')";
setTimeout(fnToExecute, 0); //execute callback fucntion
(updateItemsOrder in this example)
}
});
});
};
/*
this function is called on update event in Sortable list.
i use cfajaxproxy to create a js proxy to a remote cfc function which
updates the items order in the db.
see the CFC section above for the function code.
*/
var updateItemsOrder = function(arrOrder) {
p.setCallbackHandler(updateOrderCB); //js function to execute after
items order is updated in db
p.setErrorHandler(jsProxyError);//js function to execute on cfc/
proxy error
p.updateOrder(arrOrder);// cfc function to execute
};
//success handler
var updateOrderCB = function(result) {
if(result) {
alert("Items order updated!");//change to whatever you want to do
after items order has been updated
} else {
jsProxyError('n/a', 'Could not update items order...');// change
to whatever else you want to do on error in updating items order
}
};
// error handler
var jsProxyError = function(code, msg) {
alert("ERROR: "+msg+" (err code: "+code+")");//change to whatever
you do to show errors
};
</script>
</head>
<body>
<!--- QUERY DATABASE TO RETRIEVE PHOTOS //--->
<cfquery datasource="#application.datasource#" name="get_photos">
SELECT *
FROM photos
WHERE category = 'men' AND request_ID = #URL.ID#
ORDER BY priority ASC
</cfquery>
<!--- QUERY DATABASE TO RETRIEVE PHOTOS //--->
<cfset i = 1>
<cfset p = 1>
<h1>RE-ORDER ITEMS</h1>
<div id="tabs">
<ul class="items">
<cfoutput query="get_photos">
<li id="i_#ID#"><img src="photos/tn_#photo#"
border="0"></li>
<cfset i = i + 1>
<cfif currentrow MOD 2 EQ 0>
<cfset p = p + 1>
</cfif>
</cfoutput>
</ul>
</div>
</body>
</html>
------------------------- BEGIN CONTENTS OF reorder.cfc
----------------------
<cffunction name="updateOrder" access="remote" returntype="boolean"
output="no">
<cfargument name="items_order" required="yes" type="any">
<cfscript>
var itemsorder = listtoarray(trim(arguments.items_order));// create
local array from received list of element IDs
var qUpdateOrder = "";//create a local var for update query
var x = 0;// this local var will be the cfloop index, which is also
the new ordinal of each item
var itemid = 0;//local var for item's id
var result = true;// function result
</cfscript>
<cfloop from="1" to="#arraylen(itemsorder)#" index="x">
<!--- our items in the page are <li> elements with unique IDs like
i_#item_id#, thus to extract the item's id from received list of
ordered items we need to parse each list element and get the part
after _ - listlast() cf function makes it very easy. --->
<cfset itemid = listlast(trim(itemsorder[x]), "_")>
<cftry>
<cfquery name="qUpdateOrder"
datasource="#application.datasource#">
UPDATE photos
SET priority = <cfqueryparam cfsqltype="cf_sql_smallint"
value="#x#">
WHERE ID = <cfqueryparam cfsqltype="cf_sql_integer"
value="#itemid#">
</cfquery>
<cfcatch>
<cfset result = false>
</cfcatch>
</cftry>
</cfloop>
<cfreturn result />
</cffunction>