Abrir Mídia do wordpress

functions_admin.js

 jQuery(document).ready(function($){
        var custom_uploader;
        $('#upload_image_button').click(function(e) {
           e.preventDefault();
           if (custom_uploader) {
            custom_uploader.open();
            return;
        }
        custom_uploader = wp.media.frames.file_frame = wp.media({
            title: 'Escolha a imagem para o banner',
            button: {
                text: 'Selecionar'
            },
            multiple: false
        });
        custom_uploader.on('select', function() {
            attachment = custom_uploader.state().get('selection').first().toJSON();
            $('#upload_image').val(attachment.url);
        });
        custom_uploader.open();
    });
    });