Solved

Reordering items in an ordered list using Jquery, Ajax, PHP & Mysql

Posted on 2012-03-16
3
1,312 Views
Last Modified: 2012-03-20
I'm currently developing a site using PHP/MySQL which is also using Jquery pretty extensively, and I need to add in functionality that allows the user to re-order items within an ordered list using drag and drop.  

When list items are dragged and dropped to a new position within the ordered list -- I'd like to trigger an ajax function that updates the order of those list items in the MySQL database.  My ordered list will have a structure similar to the following (where the dynamic record ID values will be appended each list items ID attributes):

<ul id="task_list_55">
     <li id="task_39"></li>
     <li id="task_40"></li>
     <li id="task_41"></li>
     <li id="task_42"></li>
</ul>

I've achieved the functionality that I've described using Prototype & Scriptaculous in the past -- though I'd much prefer to use JQuery to accomplish this if possible.  How would I accomplish something this using JQuery, PHP, and MySQL ?

One last note -- there will be multiple different ordered lists on the same page -- each with their own unique ID attributes assigned to them -- and each of those ordered lists will need to be sortable.  Please advise on how I would accomplish this.

Thanks!
- Yvan
0
Comment
Question by:egoselfaxis
  • 2
3 Comments
 
LVL 8

Accepted Solution

by:
Ahmed Merghani earned 500 total points
ID: 37730190
I suggest to do such thing using jQuery UI. See this link:

http://jqueryui.com/demos/draggable/#sortable

After the ordering, you can handle the changes and trigger the AJax call within these events:
http://jqueryui.com/demos/draggable/#events
0
 

Author Comment

by:egoselfaxis
ID: 37738967
I'm already aware of jquery's ability to do drag n' drop using unordered lists.

I was actually looking for examples of the ajax function triggering (which somehow extracts the record ID values from each list item's ID attribute and passes them to the PHP script that does the re-ordering).  

Are you aware of any tutorials on this (or plugins) that might be helpful?

Thanks,
- yg
0
 

Author Comment

by:egoselfaxis
ID: 37743404
I ended up figuring this out myself:

$(function() {

	$( "ul.tasklist" ).sortable({	
		revert: true,
		stop: function(event, ui) { 
		
			document.getElementById("page").style.opacity = ".15";
			document.getElementById("page").style.filter = "alpha(opacity=15)";
			document.getElementById("loading").style.display = "block";		

			var ul_div_name = "#" + $(this).attr('ID');			
			
			var num_list_items = $(ul_div_name).children().length;
			
			var stage_ul_id = $(this).attr('ID');
			
			var stage_id = stage_ul_id.substring(stage_ul_id.indexOf('_')+6);	
			
			var list_of_task_ids = new Array();
			
			var num = 0;

			$(ul_div_name + ' li').each(function() {
			
				var id = $(this).attr('id').split('_')[1];
				
				list_of_task_ids[num] = id;	

				num++;	
				
			});				
			
			$.ajax({

				type : 'POST',
				url : '../user/packages.php?action=reorderTasks',
				dataType : 'json',
				
				data: {
					stage_id : stage_id,
					num_list_items : num_list_items,
					list_of_task_ids : list_of_task_ids,
				},
				 
				success: function(data) {
				
					document.getElementById("page").style.opacity = "1";
					document.getElementById("page").style.filter = "alpha(opacity=100)";
					document.getElementById("loading").style.display = "none";	
					
					alert(data.msg);		
					
					$('#package_edit').before('<div class="successtext"><input name="dismiss" type="button" class="deletebutton floatright" value="X" onclick="dismissWindow()" /><p><strong>The Tasks have been reordered successfully</strong></p></div>');
					
					$(".successtext").delay(1000).fadeOut(2000);

				},
				 
				error : function(XMLHttpRequest, textStatus, errorThrown) {
				 
					alert('ERROR!');
						
				}
				
			});	
		
		}	
		
	});	
	
});

Open in new window

0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Things That Drive Us Nuts Have you noticed the use of the reCaptcha feature at EE and other web sites?  It wants you to read and retype something that looks like this.Insanity!  It's not EE's fault - that's just the way reCaptcha works.  But it is …
Password hashing is better than message digests or encryption, and you should be using it instead of message digests or encryption.  Find out why and how in this article, which supplements the original article on PHP Client Registration, Login, Logo…
The viewer will learn how to create and use a small PHP class to apply a watermark to an image. This video shows the viewer the setup for the PHP watermark as well as important coding language. Continue to Part 2 to learn the core code used in creat…
The viewer will learn how to create a basic form using some HTML5 and PHP for later processing. Set up your basic HTML file. Open your form tag and set the method and action attributes.: (CODE) Set up your first few inputs one for the name and …

910 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

25 Experts available now in Live!

Get 1:1 Help Now