WordPress 3.5 custom media upload for your theme options

Question

WordPress 3.5 has been released recently, I used the WordPress Media Upload system via thickbox and window.send_to_editor for some options in my WordPress theme (backgrounds, logos etc...).

But as you know WordPress has integrated a new Media Manager, I wanted to used this new feature to upload images/files as custom fields. So I spent the morning to find a way to get the wished result.

I found with this solution, which can be useful for some of you. Thanks to give me your feedback on the code or any improvements you have in mind!

HTML Sample:

<a href="#" class="custom_media_upload">Upload</a>
<img class="custom_media_image" src="" />
<input class="custom_media_url" type="text" name="attachment_url" value="">
<input class="custom_media_id" type="text" name="attachment_id" value="">

jQuery Code:

$('.custom_media_upload').click(function() {

    var send_attachment_bkp = wp.media.editor.send.attachment;

    wp.media.editor.send.attachment = function(props, attachment) {

        $('.custom_media_image').attr('src', attachment.url);
        $('.custom_media_url').val(attachment.url);
        $('.custom_media_id').val(attachment.id);

        wp.media.editor.send.attachment = send_attachment_bkp;
    }

    wp.media.editor.open();

    return false;
});

If you want to see every settings contained in the attachment variable you can do a console.log(attachment) or alert(attachment).

Answer 1

Your going about it in a way that was unintended. Your javascript code should probably look something like this:

$('.custom_media_upload').click(function(e) {
    e.preventDefault();

    var custom_uploader = wp.media({
        title: 'Custom Title',
        button: {
            text: 'Custom Button Text'
        },
        multiple: false  // Set this to true to allow multiple files to be selected
    })
    .on('select', function() {
        var attachment = custom_uploader.state().get('selection').first().toJSON();
        $('.custom_media_image').attr('src', attachment.url);
        $('.custom_media_url').val(attachment.url);
        $('.custom_media_id').val(attachment.id);
    })
    .open();
});

Answer 2

I found nothing to trigger a custom function if the editor closes. I uses this:

wp.media.editor.open();
$('.media-modal-close, .media-modal-backdrop').one('click', function(){
    //do some stuff
});

or better:

var id = wp.media.editor.id();
var editor = wp.media.editor.get( id );
if('undefined' != typeof( editor )) editor = wp.media.editor.add( id );

if ( editor ) {
    editor.on('close', function(){
        //do some stuff
    });
}

Answer 3

I modified this code a bit more to make it usable for multiple fields at once:

HTML:

<!-- Image Thumbnail -->
<img class="custom_media_image" src="" style="max-width:100px; float:left; margin: 0px     10px 0px 0px; display:inline-block;" />

<!-- Upload button and text field -->
<input class="custom_media_url" id="" type="text" name="" value="" style="margin-bottom:10px; clear:right;">
<a href="#" class="button custom_media_upload">Upload</a>

jQuery:

jQuery(document).ready(function($){

$('.custom_media_upload').click(function() {

        var send_attachment_bkp = wp.media.editor.send.attachment;
        var button = $(this);

        wp.media.editor.send.attachment = function(props, attachment) {

            $(button).prev().prev().attr('src', attachment.url);
            $(button).prev().val(attachment.url);

            wp.media.editor.send.attachment = send_attachment_bkp;
        }

        wp.media.editor.open(button);

        return false;       
    });

});