jQuery可排序PHP

Question

I am using jQuery sortable to manipulate image order and write to a DB. That functionality works well.

PHP

 echo "<div class='revisionNum'>";
            echo "<ul id='sortable_" . $count ."'>";

            while($row = mysql_fetch_array($result)) {
                $sortImageName = $row['OrgImageName']; 
                $sortPath = "../data/gallery/" . $galleryID . "/images/album/" . $sortImageName;
                echo "<li class='sortPhotos' id='item_{$row['id']}' >";
                echo '<img class="sortImage" src="'. $sortPath .'"/>';
                echo "<p>" . $sortImageName . "</p>";
                echo "</li>";
            }
            echo "</ul>";
            echo "</div>";

jQuery

//make sortable
    $(".revisionNum").each(
        function(e) {
        num = e + 1;
        $("#sortable_" + num).sortable(
            {stop:function(i) {
                serial = $("#sortable_"  + num).sortable("serialize");
                $.ajax({
                    type: "GET",
                    url: "../albumUploader/queries/sort.php",
                    data: serial
                });
            },
            opacity:1.0,
            //cursor: move
        });    
    });

MYSQL

foreach($_GET['item'] as $key=>$value) {

    mysql_query("   UPDATE galleryimage
                    SET sort = '{$key}'
                    WHERE id = '{$value}'  
                ");

} The issue is when I have multiple <div class=''revisionNum> i am only grabbing the serial = $("#sortable_" + num) of the last UL if the [.revisionNum], not the actual UL that I am sorting. Thanks for the help on this. Let me know if further clarification is needed.

Answer 1

I am not sure I fully understand your question, but I think you are looking for the following:

The variable num will change every loop you make in the each-loop. But at the end it will have the value of the last loop. Because num seems to be a global variable you can't call it in the stop function. Then it will just use the last value it had. The value of the last loop. (Explains your problem)

To solve this I recommend to change your code to:

$(".revisionNum").each(
    function(e) {
    $(this).children("ul").sortable(
        {stop:function(i) {
            num = $(this).children("ul").attr("id").replace("sortable_", "");
            serial = $(this).children("ul").sortable("serialize");
            ...

$(this) refers to the $(".revisionNum") you are looping through and it will be remembered, also in the stop function.