initSelection is not getting called in select2 jquery plugin

Question

I am using select2 jquery plugin from http://ivaynberg.github.io/select2/.

I am using following code.

 $(document).ready(function () {
            $("#e6").select2({
                placeholder: "Search for a movie",
                minimumInputLength: 1,
                ajax: { // instead of writing the function to execute the request we use Select2's convenient helper
                    url: "http://api.rottentomatoes.com/api/public/v1.0/movies.json",
                    dataType: 'jsonp',
                    quietMillis: 1000,
                    data: function (term, page) {
                        return {
                            q: term, // search term
                            page_limit: 10,
                            apikey: "ju6z9mjyajq2djue3gbvv26t" // please do not use so this example keeps working
                        };
                    },
                    results: function (data, page) { // parse the results into the format expected by Select2.
                        // since we are using custom formatting functions we do not need to alter remote JSON data
                        return { results: data.movies };
                    }
                },
                initSelection: function (element, callback) {
                    var id = 9942;//$(element).val();
                    alert('initSelection');
                    if (id !== "") {
                        $.ajax("http://api.rottentomatoes.com/api/public/v1.0/movies/" + id + ".json", {
                            data: {
                                apikey: "ju6z9mjyajq2djue3gbvv26t"
                            },
                            dataType: "jsonp"
                        }).done(function (data) { callback(data); });
                    }
                },

                formatResult: movieFormatResult, // omitted for brevity, see the source of this page
                formatSelection: movieFormatSelection,  // omitted for brevity, see the source of this page
                dropdownCssClass: "bigdrop", // apply css that makes the dropdown taller
                escapeMarkup: function (m) { return m; } // we do not want to escape markup since we are displaying html in results
            });

        });


        $(document).ready(function () {
            $("#e6").on("select2-selecting", function (e) {
                var v = 10;
                alert("selecting val=" + e.val + " choice=" + JSON.stringify(e.choice));
                var id = document.getElementById('<%= savebtn.ClientID %>');
                id.value = e.val;
                id.click();

            });
        });

Problem: For some reasons initSelection is not getting called and because of this, I am not able to set value for the textbox across post-backs.

I am using loading remote data example from http://ivaynberg.github.io/select2/ site.

I looked at the documentation for initSelection and it says "This function will only be called when there is initial input to be processed.", I am not sure what exactly it means.

Am I doing something wrong? Please help

Answer 1

You should provide initial value:

<input ... value="192" ... />

or

$('#e6').select2('val', 192);

For multiple values, either:

<input ... value="192,193" ... />

or

$('#e6').select2('val', [192,193]);

See JSFiddle.