PHP implements the drag-and-drop grouping effect of friends on Google plus_php example

Have you been looking for the drag-and-drop friend grouping function of Google PLS? Google's implementation is so cool! I have used PHP and jQuery to implement the same application of dragging friends to add groups. This PHP tutorial will tell you how to implement it. I hope my examples will be helpful to your social networking site project.

The effect is as follows:

The sample database contains three tables, namely relationships between users and user groups.

User table Members

The table contains member (user) data, such as member_id, member_image, etc.

CREATE TABLE IF NOT EXISTS `members` ( 
`member_id` int(9) NOT NULL AUTO_INCREMENT, 
`member_name` varchar(220) NOT NULL, 
`member_image` text NOT NULL, 
`dated` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, 
PRIMARY KEY (`member_id`) 
); 

User GroupsGroups

CREATE TABLE IF NOT EXISTS `groups` ( 
`group_id` int(9) AUTO_INCREMENT, 
`group_name` varchar(220), 
`sort` int(9), 
`date` timestamp DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, 
PRIMARY KEY (`group_id`), 
KEY `sort` (`sort`) 
); 

Relationship between user groups User_group

The relationship table user_group between users and user rental tables contains user_id (same as member_id), group_id, member_id() and sort (sort) fields.

CREATE TABLE IF NOT EXISTS `user_group` ( 
`id` int(9) NOT NULL AUTO_INCREMENT, 
`user_id` int(9) NOT NULL, 
`group_id` int(9) NOT NULL, 
`member_id` int(9) NOT NULL, 
`sort` int(9) NOT NULL, 
PRIMARY KEY (`id`) 
); 

Javascript

We use drag and drop on two class attributes: .members and .group.

<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.js"></script> 
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.8.14/jquery-ui.js"></script> 
<script type="text/javascript" src="jquery.livequery.min.js"></script> 
<script type="text/javascript" > 
$(function() 
{ 
// Initiate draggable for public and groups 
var $gallery = $( ".members, .group" ); 
$( "img", $gallery ).live("mouseenter", function() 
{ 
var $this = $(this); 
if(!$this.is(':data(draggable)')) 
{ 
$this.draggable({ 
helper: "clone", 
containment: $( "#demo-frame" ).length &#63; "#demo-frame" : "document", 
cursor: "move" 
}); 
} 
}); 
// Initiate Droppable for groups 
// Adding members into groups 
// Removing members from groups 
// Shift members one group to another 
$(".group").livequery(function(){ 
var casePublic = false; 
$(this).droppable({ 
activeClass: "ui-state-highlight", 
drop: function( event, ui ) { 
var m_id = $(ui.draggable).attr('rel'); 
if(!m_id) 
{ 
casePublic = true; 
var m_id = $(ui.draggable).attr("id"); 
m_id = parseInt(m_id.substring(3)); 
} 
var g_id = $(this).attr('id'); 
dropPublic(m_id, g_id, casePublic); 
$("#mem"+m_id).hide(); 
$( "<li></li>" ).html( ui.draggable ).appendTo( this ); 
}, 
out: function(event, ui) { 
var m_id = $(ui.draggable).attr('rel'); 
var g_id = $(this).attr('id'); 
$(ui.draggable).hide("explode", 1000); 
removeMember(g_id,m_id); 
} 
}); 
}); 
// Add or shift members from groups 
function dropPublic(m_id, g_id,caseFrom) 
{ 
$.ajax({ 
type:"GET", 
url:"groups.php&#63;m_id="+m_id+"&g_id="+g_id, 
cache:false, 
success:function(response){ 
$.get("groups.php&#63;reload_groups", function(data){ 
$("#groupsall").html(data); 
$("#added"+g_id).animate({"opacity" : "10" },10); 
$("#added"+g_id).show(); 
$("#added"+g_id).animate({"margin-top": "-50px"}, 450); 
$("#added"+g_id).animate({"margin-top": "0px","opacity" : "0" }, 450); 
}); 
} 
}); 
} 
// Remove memebers from groups 
// It will restore into public groups or non grouped members 
function removeMember(g_id,m_id) 
{ 
$.ajax({ 
type:"GET", 
url:"groups.php&#63;do=drop&mid="+m_id, 
cache:false, 
success:function(response){ 
$("#removed"+g_id).animate({"opacity" : "10" },10); 
$("#removed"+g_id).show(); 
$("#removed"+g_id).animate({"margin-top": "-50px"}, 450); 
$("#removed"+g_id).animate({"margin-top": "0px","opacity" : "0" }, 450); 
$.get("groups.php&#63;reload", function(data){ $("#public").html(data); }); 
} 
}); 
} 
}); 
</script> 

groups.php

Here we deal with the data processing function of dragging and adding user groups.

<&#63;php 
require_once("multipleDiv.inc.php"); 
// Initiate Object 
$obj = new Multiplediv(); 
// Add or Update Ajax Call 
if(isset($_GET['m_id']) and isset($_GET['g_id'])) 
{ 
$obj->addMembers((int)$_GET['m_id'], (int)$_GET['g_id']); 
exit; 
} 
// Remove Memebers from groups Ajax call 
if(isset($_GET['do'])) 
{ 
$obj->removeMember($_GET['mid']); 
exit; 
} 
// Reload groups each ajax call 
if(isset($_GET['reload'])){ echo $obj->getMembers_reload(); exit; } 
if(isset($_GET['reload_groups'])){ echo $obj->getmembergroups_reload(); exit; } 
// Initiate Groups and members 
$members = $obj->public_members(); 
$groups = $obj->groups(); 
&#63;> 
Friends 
<div id="main_portion"> 
<div id="public"> 
<!-- Initiate members --> 
<&#63;php 
if(!isset($members)) 
$members = $obj->public_members(); 
if($members) 
{ 
foreach($members as $member) 
{ 
extract($member); 
echo "<div class='members' id='mem".$member_id."'>\n"; 
echo "<img src='images/".$member_image."' rel='".$member_id."'>\n"; 
echo "<b>".ucwords($member_name)."</b>\n"; 
echo "</div>"; 
} 
} 
else 
echo "Members not available"; 
&#63;> 
</div> 
<div id="groupsall"> 
Groups 
<!-- Initiate Groups --> 
<&#63;php 
if(!isset($groups)) 
$groups = $obj->groups(); 
if($groups) 
{ 
foreach($groups as $group) 
{ 
extract($group); 
echo "<div id='".$group_id."' class='group'>\n"; 
echo ucwords($group_name); 
echo "<div id='added".$group_id."' class='add' style='display:none;' ><img src='images/green.jpg'></div>"; 
echo "<div id='removed".$group_id."' class='remove' style='display:none;' ><img src='images/red.jpg'></div>"; 
echo "<ul>\n"; 
echo $obj->updateGroups($group_id); 
echo "</ul></div>"; 
} 
} 
&#63;> 
</div> 
</div> 

multipleDiv.inc.php

Modify the database connection information here.

<&#63;php 
// Database declaration's 
define("SERVER", "localhost"); 
define("USER", "username"); 
define("PASSWORD", "password"); 
define("DB", "database"); 
 
class Multiplediv 
{ 
........................ 
........................ 
......................... 
} 
&#63;> 

At this point, we are finished with how to implement Google plus’s drag-and-drop friend grouping function. The above is the entire content of this article. I hope it will be helpful to everyone's study. I also hope that everyone will support Script Home.