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Wednesday, July 25, 2012

Pagination with jquery, Ajax and PHP

Pagination with jquery, Ajax and PHP

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//index.php
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script> 
<script type="text/javascript">
            $(document).ready(function(){
                function loading_show(){
                    $('#loading').html("<img src='images/loading.gif'/>").fadeIn('fast');
                }
                function loading_hide(){
                    $('#loading').fadeOut('fast');
                }                
                function loadData(page){
                    loading_show();                    
                    $.ajax
                    ({
                        type: "POST",
                        url: "load_data.php",
                        data: "page="+page,
                        success: function(msg)
                        {
                            $("#container").ajaxComplete(function(event, request, settings)
                            {
                                loading_hide();
                                $("#container").html(msg);
                            });
                        }
                    });
                }
                loadData(1);  // For first time page load default results
                $('#container .pagination li.active').live('click',function(){
                    var page = $(this).attr('p');
                    loadData(page);
                });           
                $('#go_btn').live('click',function(){
                    var page = parseInt($('.goto').val());
                    var no_of_pages = parseInt($('.total').attr('a'));
                    if(page != 0 && page <= no_of_pages){
                        loadData(page);
                    }else{
                        alert('Enter a PAGE between 1 and '+no_of_pages);
                        $('.goto').val("").focus();
                        return false;
                    }
                    
                });
            });
</script>
<style type="text/css">
            body{
                width: 800px;
                margin: 0 auto;
                padding: 0;
            }
            #loading{
                width: 100%;
                position: absolute;
                top: 100px;
                left: 100px;
    margin-top:200px;
            }
            #container .pagination ul li.inactive,
            #container .pagination ul li.inactive:hover{
                background-color:#ededed;
                color:#bababa;
                border:1px solid #bababa;
                cursor: default;
            }
            #container .data ul li{
                list-style: none;
                font-family: verdana;
                margin: 5px 0 5px 0;
                color: #000;
                font-size: 13px;
            }
            #container .pagination{
                width: 800px;
                height: 25px;
            }
            #container .pagination ul li{
                list-style: none;
                float: left;
                border: 1px solid #006699;
                padding: 2px 6px 2px 6px;
                margin: 0 3px 0 3px;
                font-family: arial;
                font-size: 14px;
                color: #006699;
                font-weight: bold;
                background-color: #f2f2f2;
            }
            #container .pagination ul li:hover{
                color: #fff;
                background-color: #006699;
                cursor: pointer;
            }
   .go_button
   {
   background-color:#f2f2f2;border:1px solid #006699;color:#cc0000;padding:2px 6px 2px 6px;cursor:pointer;position:absolute;margin-top:-1px;margin-left:3px;
   }
   .total
   {
   float:right;font-family:arial;color:#999;
   }
        </style>
<div align="center" style="font-size:24px;color:#cc0000;font-weight:bold">Pagination with jquery, Ajax and PHP</div>
        <div id="loading"></div>
        <div id="container">
            <div class="data"></div>
            <div class="pagination"></div>
        </div>
//load_data.php
<?php
if($_POST['page'])
{
$page = $_POST['page'];
$cur_page = $page;
$page -= 1;
$per_page = 15;
$previous_btn = true;
$next_btn = true;
$first_btn = true;
$last_btn = true;
$start = $page * $per_page;
include"db.php";

$query_pag_data = "SELECT mes_id,message from messages LIMIT $start, $per_page";
$result_pag_data = mysql_query($query_pag_data) or die('MySql Error' . mysql_error());
$msg = "";
while ($row = mysql_fetch_array($result_pag_data)) {
$htmlmsg=htmlentities($row['message']);
    $msg .= "<li><b>" . $row['mes_id'] . "</b> " . $htmlmsg . "</li>";
}
$msg = "<div class='data'><ul>" . $msg . "</ul></div>"; // Content for Data


/* --------------------------------------------- */
$query_pag_num = "SELECT COUNT(*) AS count FROM messages";
$result_pag_num = mysql_query($query_pag_num);
$row = mysql_fetch_array($result_pag_num);
$count = $row['count'];
$no_of_paginations = ceil($count / $per_page);

/* ---------------Calculating the starting and endign values for the loop----------------------------------- */
if ($cur_page >= 7) {
    $start_loop = $cur_page - 3;
    if ($no_of_paginations > $cur_page + 3)
        $end_loop = $cur_page + 3;
    else if ($cur_page <= $no_of_paginations && $cur_page > $no_of_paginations - 6) {
        $start_loop = $no_of_paginations - 6;
        $end_loop = $no_of_paginations;
    } else {
        $end_loop = $no_of_paginations;
    }
} else {
    $start_loop = 1;
    if ($no_of_paginations > 7)
        $end_loop = 7;
    else
        $end_loop = $no_of_paginations;
}
/* ----------------------------------------------------------------------------------------------------------- */
$msg .= "<div class='pagination'><ul>";

// FOR ENABLING THE FIRST BUTTON
if ($first_btn && $cur_page > 1) {
    $msg .= "<li p='1' class='active'>First</li>";
} else if ($first_btn) {
    $msg .= "<li p='1' class='inactive'>First</li>";
}

// FOR ENABLING THE PREVIOUS BUTTON
if ($previous_btn && $cur_page > 1) {
    $pre = $cur_page - 1;
    $msg .= "<li p='$pre' class='active'>Previous</li>";
} else if ($previous_btn) {
    $msg .= "<li class='inactive'>Previous</li>";
}
for ($i = $start_loop; $i <= $end_loop; $i++) {

    if ($cur_page == $i)
        $msg .= "<li p='$i' style='color:#fff;background-color:#006699;' class='active'>{$i}</li>";
    else
        $msg .= "<li p='$i' class='active'>{$i}</li>";
}

// TO ENABLE THE NEXT BUTTON
if ($next_btn && $cur_page < $no_of_paginations) {
    $nex = $cur_page + 1;
    $msg .= "<li p='$nex' class='active'>Next</li>";
} else if ($next_btn) {
    $msg .= "<li class='inactive'>Next</li>";
}

// TO ENABLE THE END BUTTON
if ($last_btn && $cur_page < $no_of_paginations) {
    $msg .= "<li p='$no_of_paginations' class='active'>Last</li>";
} else if ($last_btn) {
    $msg .= "<li p='$no_of_paginations' class='inactive'>Last</li>";
}
$goto = "<input type='text' class='goto' size='1' style='margin-top:-1px;margin-left:60px;padding:2px;text-align:center;'/><input type='button' id='go_btn' class='go_button' value='Go'/>";
$total_string = "<span class='total' a='$no_of_paginations'>Page <b>" . $cur_page . "</b> of <b>$no_of_paginations</b></span>";
$msg = $msg . "</ul>" . $goto . $total_string . "</div>";  // Content for pagination
echo $msg;
}
//db.php
<?php
$mysql_hostname = "localhost";
$mysql_user = "root";
$mysql_password = "ednalan";
$mysql_database = "dbname";
$prefix = "";
$bd = mysql_connect($mysql_hostname, $mysql_user, $mysql_password) or die("Opps some thing went wrong");
mysql_select_db($mysql_database, $bd) or die("Opps some thing went wrong");
?>

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