Select2: how to set data after init?

Question

I need to set an array of data after initializing select2. So I want to make something like this:

var select = $(\'#select\').select2({});
select.data([
  {id: 1         


        

Answer 1

Here's what I did.

1. Extend select2

    Select2.prototype.setAjax = function (ajaxOptions)
                {
                    // Set the new ajax properties
                    var oAjaxOpts = this.options.get('ajax');
                    if (oAjaxOpts != undefined && oAjaxOpts != null)
                    {
                        for (var sKey in ajaxOptions)
                        {
                            oAjaxOpts[sKey] = ajaxOptions[sKey];
                        }
                    }
                    var DataAdapter = this.options.get('dataAdapter');
                    this.dataAdapter = new DataAdapter(this.$element, this.options);
                }

2. Initialize as usual (for example --- yours could be different)

jHtmlFrag.select2({
            dropdownParent: $(oData.jDiv),
            placeholder: "Select Option",
            allowClear: true,
            minimumInputLength: 2,
            ajax: {
                url: "",
                method: "POST",
                dataType: 'json',
                delay: 250,
                processResults: function (oResults, params)
                {
                    let page = params.page || 1;
                    // console.log(oResults, (params.page * 10));
                    return {
                        results: oResults.data,
                        pagination: {
                            more: (page * 10) < oResults.recordsFiltered
                        }
                    };
                }
            }
        }).val(null).trigger('change');

3. Set Ajax options dynamically when you feel like by calling the new extension func

jCombo.select2('setAjax', {
            url: sUrl,
            data: function (params)
            {
                let query = {
                    search: params.term,
                    type: params._type,
                    page: params.page || 1,
                }
                return query;
            },
        });