define campground engine

camp-ahead.js

// https://github.com/twitter/typeahead.js/blob/master/doc/bloodhound.md#options
var campBH = new Bloodhound({
    name: "camp",

    datumTokenizer: function (d) {
        return Bloodhound.tokenizers.whitespace(d.name);
    },
    queryTokenizer: Bloodhound.tokenizers.whitespace,
    remote: {
        // feature services currently only support query
        // if you are using a map server, use find
        //http://resources.arcgis.com/en/help/arcgis-rest-api/index.html#/Query_Feature_Service_Layer/02r3000000r1000000/
        url: config.featureServerUrl + config.featureLayerIndexes.camp + "/query?" +
        "where=REC_NAME Like '%%QUERY%'" +
        "&outFields=REC_NAME,OBJECTID"  +
        "&returnGeometry=false&f=json",

        // build the 'datums' that populate the search drop down
        // this happens on the callback to the query above
        filter: function (data) {
            // we only need the name,
            // objectid (to retrieve the feature if selected)
            // and the source (to later determine which type was selected by the user)
            return $.map(data.features, function (feature) {
                return {
                    name: feature.attributes.REC_NAME,
                    objectId: feature.attributes.OBJECTID,
                    source: "camp"
                };
            });
        },
        // set and remove spinners
        ajax: {
            beforeSend: function (jqXhr, settings) {
                $("#search-loading-icon").addClass("search-loading");
            },
            complete: function (jqXHR, status) {
                $("#search-loading-icon").removeClass("search-loading");
            }
        }
    },
    limit: 5
});
campBH.initialize();