I'm building a custom plugin on WP admin to insert data on custom MySQL tables. For nearly a week I was trying to do a confirmation dialog for a delete item event on a Wordpress table. After I almost lost all my hair searching for an answer, it seemed too good and simple to be true. But worked. Follows the code.
EDIT: turns out that the wp standard jquery wasn't working properly, and the Google hosted jQuery included in another class was making the correct calls for the JS. When I removed the unregister/register added below, ALL the other dialog calls stopped working. I don't know why this happened, or the jQuery version included in this particular WP distribution, but when I returned to the old registrations, using Google hosted scripts as seen below, everything went back to normality.
On PHP (first, register and call the script):
add_action('admin_init', 'init_scripts_2'); function init_scripts_2(){ ///deregister the WP included jQuery and style for the dialog and add the libs from Google wp_deregister_script('jquery-ui'); wp_register_script('jquery-ui', 'http://ajax.googleapis.com/ajax/libs/jqueryui/1.10.2/jquery-ui.min.js'); wp_deregister_style('jquery-ui-pepper-grinder'); wp_register_style('jquery-ui-pepper-grinder', 'http://ajax.googleapis.com/ajax/libs/jqueryui/1.10.2/themes/pepper-grinder/jquery-ui.min.css'); wp_enqueue_script('jquery-ui'); ///call the recently added jquery wp_enqueue_style('jquery-ui-pepper-grinder'); ///call the recently added style wp_deregister_script('prevent_delete'); ///needed the deregister. why? don't know, but worked ///register again, localize and enqueue your script wp_register_script('prevent_delete', WP_PLUGIN_URL . '/custom_plugin/js/prevent_delete.js', array('jquery-ui')); wp_localize_script('prevent_delete', 'ajaxdelete', array('ajaxurl' => admin_url('admin-ajax.php'))); wp_enqueue_script('prevent_delete'); }
Next, if you're opening the dialog on a click event, like me, make sure you ALWAYS use class instead of id to identify the button or link later, on jQuery.
<a class="delete" href="?page=your_plugin&action=delete">Delete</a>
We also need to use a tag that holds the dialog text. I needed to set the style to hide the div.
<div id="dialog_id" style="display: none;"> Are you sure about this? </div>
Finally, the jQuery.
/*jslint browser: true*/ /*global $, jQuery, alert*/ jQuery(document).ready(function ($) { "use strict"; ///on class click $(".delete").click(function (e) { e.preventDefault(); ///first, prevent the action var targetUrl = $(this).attr("href"); ///the original delete call ///construct the dialog $("#dialog_id").dialog({ autoOpen: false, title: 'Confirmation', modal: true, buttons: { "OK" : function () { ///if the user confirms, proceed with the original action window.location.href = targetUrl; }, "Cancel" : function () { ///otherwise, just close the dialog; the delete event was already interrupted $(this).dialog("close"); } } }); ///open the dialog window $("#dialog_id").dialog("open"); }); });
EDIT: The call for the standard wp dialog style didn't work after all. The "pepper-grinder" style made the dialog appear correctly in the center of the window. I know the looks for the dialog are not very easy on the eye, but i needed the confirmation dialog and this worked just fine for me.
