silverstripe-dms/javascript/DMSDocumentAddExistingField.js

(function($) {
	"use strict";

	$.entwine('ss', function($) {

	$('.document-add-existing .document-autocomplete').entwine({
		onmatch: function() {
			var self = this;
			this.autocomplete({
				source: 'admin/pages/adddocument/documentautocomplete',
				select: function(event, ui) {
					if(ui.item) {
						var page_id = $(this).closest('form').find(':input[name=ID]').val();
						var document_id = ui.item.value;

						jQuery.ajax(
							'admin/pages/adddocument/linkdocument?ID=' + page_id + '&documentID=' + document_id,
							{
								dataType: 'json',
								success: function(data, textstatus) {
									var fn = window.tmpl.cache['ss-uploadfield-downloadtemplate'];
									var fnout = fn({
										files: [data],
											formatFileSize: function (bytes) {
											if (typeof bytes !== 'number') return '';
											if (bytes >= 1000000000) return (bytes / 1000000000).toFixed(2) + ' GB';
											if (bytes >= 1000000) return (bytes / 1000000).toFixed(2) + ' MB';
											return (bytes / 1000).toFixed(2) + ' KB';
										},
										options: self.fileupload('option')
                                    });

									$('.ss-add-files').append(fnout);
								}
							}
						);
					}
				}
			});
		}
	});

	});
}(jQuery));