jQuery Autocomplete using extraParams to pass additional GET variables

Question

I am referring specifically to the jQuery Autocomplete v1.1 plugin by Jörn Zaefferer [source: http://bassistance.de/jquery-plugins/jquery-plugin-autocomplete/] as there seems to

Answer 1

You can use the built in jquery ui autocomplete like so:

          $(function() {
         $("#BurroughName").autocomplete({
                minLength: 0,
                source: function( request, response) {
                            $.ajax({
                                        url: "/JsonData/GetBurroughFromSearchTermJson",
                                        dataType: "json",
                                        data: {
                                                    term: request.term,
                                                    CityId: $("#CityId").val()
                                        },
                                        success: function( data ) {
                                                    response( data );
                                        }
                            });
                },                  
                select: function( event, ui) {
                    $("#BurroughId").val(ui.item.id);

                    if (ui.item.id != null) {
                         var cityId = $('#CityId').val();
                        $.getJSON("/AdSales/City.mvc/GetCityJSONListFromBrand", { burroughId: ui.item.id }, function(data) {
                             $("#CityId").fillSelect(data);
                             var foo = $("#CityId option[value=" + cityId + "]");
                             if(($("#CityId option[value=" + cityId + "]").length > 0) && cityId != "")
                             {
                                 $("#CityId").val(cityId);
                             }
                        });
                    }
                    $('#burroughSpinner').fadeOut('slow', function(){});
                }
         });
     });

Here's their jsonp example: http://jqueryui.com/demos/autocomplete/#remote-jsonp

Answer 2

I had the same problem, but oddly enough, only with the minified version of the autocomplete plugin. When I used the non-minified version, it works. I haven't looked at the minified version yet to see what the difference might be.

Answer 3

While less than ideal, I've hacked/modified the plugin to get it to work for me.

Simply, I've altered the AJAX jQuery function within the plugin.

Around line 363 you'll see:

        $.ajax({
            // try to leverage ajaxQueue plugin to abort previous requests
            mode: "abort",
            // limit abortion to this input
            port: "autocomplete" + input.name,
            dataType: options.dataType,
            url: options.url,
            data: $.extend({
                q: lastWord(term),
                search_type: $(input).attr('name'), // my mod to pickup multiple fields
                limit: options.max
            }, extraParams),
            success: function(data) {
                var parsed = options.parse && options.parse(data) || parse(data);
                cache.add(term, parsed);
                success(term, parsed);
            }
        });

I'm still looking for an elegant solution to this so feel free to keep suggestions coming.

Answer 4

Using the autocomplete in JQuery 1.7.something...

Using an aspx data grid: I needed autocomplete to fire for any record choosen but with different seed data based on the value entered. I also needed two other fields that are being displayed in the record on the data grid to get my data for the autocomplete. The fields I need to reference all have their own class name.

    $(".AutoSearch").autocomplete({
            DateTime: "",
            Maker: "",
            search: function (event, ui) {
                DateTime = $(this).parent().parent().parent().find(".DateTime").text();
                Maker = $(this).parent().parent().parent().find(".Maker").text();
            },
            source: function (request, response) {
                $.ajax({
                    type: "POST",
                    dataType: "json",
                    url: "AutoList.aspx/GetListOfAutos",
                    data: "{ " +
                        "'DateTime': '" + DateTime + "', " +
                        "'Maker': '" + Maker + "', " +
                        "'SearchSeed': '" + request.term + "', " +
                        "'NumberToRetrieve': '" + 100 + "'" +
                    " }",
                    contentType: "application/json; charset=utf-8",
                    success: function (data) {
                        response($.map(data.d, function (item) {
                            return {
                                label: item.Description,
                                value: item.Number
                            }
                        }));
                    },
            error: function (XMLHttpRequest, textStatus, errorThrown) {
                        alert("There was an error retrieving the Data.");
                    }
                });
            },
            change: function (event, ui) {
                $(this).parent().parent().parent().parent().parent().parent().css("background-color", "#EEC900");
                $(this).parent().parent().parent().parent().parent().parent().find(".chkReadyExport").find("input:checkbox").prop("checked", false);
            },
            select: function (event, ui) {
                this.value = ui.item.value;
                return false;
            },
            minlength: 6,
            open: function () {
                $(this).removeClass("ui-corner-all").addClass("ui-corner-top");
            },
            close: function () {
                $(this).removeClass("ui-corner-top").addClass("ui-corner-all");
            }
        });
    }

I added two properties; DateTime and Maker and then using search: which is fired before the autocomplete fires source: I was able to get the data I needed from the row that I was on. This provided me a nice way to keep all my searching and extra data items all in one place.

The .parent().parent() and so on is because I have multi-line tables to display my data in the gridview and I need to traverse up the tree and then find the text box or label I'm looking for and change the background color of the row with the changed data. I am not proficient at finding items with jQuery yet thus the parent.parent... thing.

Answer 5

jQuery( "#jac" ).autocomplete({
    source: autocompleteURL,
    minLength: 2,
    search: function( event, ui ) { 

        // update source url by adding new GET params
        $(this).autocomplete( 'option', 'source', autocompleteURL + 'var1=aaa&var2=bbb' );
    }
})

Works for me with jquery.ui.autocomplete 1.8.17

Answer 6

I am not sure why it is not working.

But you can first check/debug for value of $(this).attr('name').

Also one more thing as here explained [in options tab], you can check with Firebug to see ajax post request(for url and it's data) which will help you to resolve the problem.