The issue of jQuery Dialog form serialization causing incorrect data to be reposted in future interactions

Question

The issue of jQuery Dialog form serialization causing incorrect data to be reposted in future interactions

Currently, I am facing some challenges with the data being posted when working with forms inside jQuery Dialog. The initial load and save of the data work correctly. However, after refreshing the page, subsequent loads display the correct data in the form but end up posting the data from the first load every time.

function formdialog(url, tack, divid, scriptload){
    $.getJSON(url+tack+"/form", function(data){
        var formwin = '<div><form id="formdialog">'+data['form']+'</form></div>';
        var dialog = $(formwin).dialog({
            title: data['title'],
            autoOpen: false,
            modal: true,
            buttons: {
                "Save": function(){    
                    $.post(url+tack+"/process", 
                        $("#formdialog").serialize(),
                        function(data){
                            alert($("#formdialog").serialize());
                            $(this).dialog('close');
                            $(this).remove();
                        }
                    );
                },
                "Cancel": function(){$(this).dialog('close'); $(this).remove();}
            }
        });

        dialog.dialog("open");
    });
}

$(function(){        
    $("a.edlnk").click(function(){
        var url = $(this).attr("href");
        formdialog(CONFIG_HREF_SITE+"ajax/"+appControl, "/"+url, divid);
        return false;
    });
});

javascript ajax webforms jquery-dialog

Answer 1

Answer №1

It seems like the issue lies within

$(this).dialog('close');
$(this).remove();

...in your post callback because there is no specified context for the callback function. To resolve this, you can modify the post to include the following:

$.ajax({
    url:        url+tack+"/process",
    type:       'POST',
    data:       $("#formdialog").serialize(),
    context:    this,
    success:    function(data){
        alert($("#formdialog").serialize());
        $(this).dialog('close');
        $(this).remove();
    }
});

By doing so, you maintain the reference to this when the success function is executed.

The behavior you are experiencing is likely occurring because if you do not remove the formwin div, the formdialog form will still be present, resulting in multiple form elements on the page with the same ID. Although having duplicate IDs is invalid and may lead to undefined behavior, most browsers will retrieve the first matching element when an element is requested by ID — in this case, it would be the initial form with the original data.

Edit Regarding your comment: It appears I overlooked the $(this).dialog('close'). Here are a couple of solutions: one option is to store $(formwin) in a local variable and use it within the callback, as shown below:

var formwin = '<div><form id="formdialog">'+data['form']+'</form></div>';
var formwinElement = $(formwin);     // <== Store it here
var dialog = formwinElement.dialog({ // <== Utilize it here

// ...

                $.post(url+tack+"/process", 
                    $("#formdialog").serialize(),
                    function(data){
                        alert($("#formdialog").serialize());
                        $(this).dialog('close');
                        formWinElement.remove(); // <== Also here
                    }
                );

...and eliminate the need for the context parameter (thus reverting to your original $.post method in this update). This approach works because the post success handler encapsulates the formwinElement variable (along with other variables).

Answer 2

It seems like the issue lies within

$(this).dialog('close');
$(this).remove();

...in your post callback because there is no specified context for the callback function. To resolve this, you can modify the post to include the following:

$.ajax({
    url:        url+tack+"/process",
    type:       'POST',
    data:       $("#formdialog").serialize(),
    context:    this,
    success:    function(data){
        alert($("#formdialog").serialize());
        $(this).dialog('close');
        $(this).remove();
    }
});

By doing so, you maintain the reference to this when the success function is executed.

The behavior you are experiencing is likely occurring because if you do not remove the formwin div, the formdialog form will still be present, resulting in multiple form elements on the page with the same ID. Although having duplicate IDs is invalid and may lead to undefined behavior, most browsers will retrieve the first matching element when an element is requested by ID — in this case, it would be the initial form with the original data.

Edit Regarding your comment: It appears I overlooked the $(this).dialog('close'). Here are a couple of solutions: one option is to store $(formwin) in a local variable and use it within the callback, as shown below:

var formwin = '<div><form id="formdialog">'+data['form']+'</form></div>';
var formwinElement = $(formwin);     // <== Store it here
var dialog = formwinElement.dialog({ // <== Utilize it here

// ...

                $.post(url+tack+"/process", 
                    $("#formdialog").serialize(),
                    function(data){
                        alert($("#formdialog").serialize());
                        $(this).dialog('close');
                        formWinElement.remove(); // <== Also here
                    }
                );

...and eliminate the need for the context parameter (thus reverting to your original $.post method in this update). This approach works because the post success handler encapsulates the formwinElement variable (along with other variables).

The issue of jQuery Dialog form serialization causing incorrect data to be reposted in future interactions

Answer №1

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