130 lines
4.3 KiB
JavaScript
130 lines
4.3 KiB
JavaScript
/*
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* Unobtrusive autocomplete
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*
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* To use it, you just have to include the HTML attribute autocomplete
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* with the autocomplete URL as the value
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*
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* Example:
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* <input type="text" data-autocomplete="/url/to/autocomplete">
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*
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* Optionally, you can use a jQuery selector to specify a field that can
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* be updated with the element id whenever you find a matching value
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*
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* Example:
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* <input type="text" data-autocomplete="/url/to/autocomplete" data-id-element="#id_field">
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*/
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(function(jQuery)
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{
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var self = null;
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jQuery.fn.railsAutocomplete = function() {
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return this.live('focus',function() {
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if (!this.railsAutoCompleter) {
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this.railsAutoCompleter = new jQuery.railsAutocomplete(this);
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}
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});
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};
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jQuery.railsAutocomplete = function (e) {
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_e = e;
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this.init(_e);
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};
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jQuery.railsAutocomplete.fn = jQuery.railsAutocomplete.prototype = {
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railsAutocomplete: '0.0.1'
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};
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jQuery.railsAutocomplete.fn.extend = jQuery.railsAutocomplete.extend = jQuery.extend;
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jQuery.railsAutocomplete.fn.extend({
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init: function(e) {
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e.delimiter = jQuery(e).attr('data-delimiter') || null;
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function split( val ) {
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return val.split( e.delimiter );
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}
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function extractLast( term ) {
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return split( term ).pop().replace(/^\s+/,"");
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}
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jQuery(e).autocomplete({
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source: function( request, response ) {
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jQuery.getJSON( jQuery(e).attr('data-autocomplete'), {
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term: extractLast( request.term )
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}, function() {
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if(arguments[0].length == 0) {
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arguments[0] = []
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arguments[0][0] = { id: "", label: "no existing match" }
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}
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jQuery(arguments[0]).each(function(i, el) {
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var obj = {};
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obj[el.id] = el;
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jQuery(e).data(obj);
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});
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response.apply(null, arguments);
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});
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},
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change: function( event, ui ) {
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if(jQuery(jQuery(this).attr('data-id-element')).val() == "") {
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return;
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}
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jQuery(jQuery(this).attr('data-id-element')).val(ui.item ? ui.item.id : "");
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var update_elements = jQuery.parseJSON(jQuery(this).attr("data-update-elements"));
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var data = ui.item ? jQuery(this).data(ui.item.id.toString()) : {};
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if(update_elements && jQuery(update_elements['id']).val() == "") {
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return;
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}
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for (var key in update_elements) {
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jQuery(update_elements[key]).val(ui.item ? data[key] : "");
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}
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},
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search: function() {
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// custom minLength
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var term = extractLast( this.value );
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if ( term.length < 2 ) {
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return false;
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}
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},
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focus: function() {
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// prevent value inserted on focus
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return false;
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},
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select: function( event, ui ) {
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var terms = split( this.value );
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// remove the current input
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terms.pop();
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// add the selected item
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terms.push( ui.item.value );
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// add placeholder to get the comma-and-space at the end
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if (e.delimiter != null) {
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terms.push( "" );
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this.value = terms.join( e.delimiter );
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} else {
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this.value = terms.join("");
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if (jQuery(this).attr('data-id-element')) {
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jQuery(jQuery(this).attr('data-id-element')).val(ui.item.id);
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}
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if (jQuery(this).attr('data-update-elements')) {
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var data = jQuery(this).data(ui.item.id.toString());
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var update_elements = jQuery.parseJSON(jQuery(this).attr("data-update-elements"));
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for (var key in update_elements) {
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jQuery(update_elements[key]).val(data[key]);
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}
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}
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}
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var remember_string = this.value;
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jQuery(this).bind('keyup.clearId', function(){
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if(jQuery(this).val().trim() != remember_string.trim()){
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jQuery(jQuery(this).attr('data-id-element')).val("");
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jQuery(this).unbind('keyup.clearId');
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}
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});
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jQuery(e).trigger('railsAutocomplete.select', ui);
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return false;
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}
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});
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}
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});
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jQuery(document).ready(function(){
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jQuery('input[data-autocomplete]').railsAutocomplete();
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});
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})(jQuery);
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