Enable select2 multi-select search box

user_2444020 0
Viewed 114440

I need to be able to add a search box to my multi-select fields using select2.

For whatever reason, while search boxes appear as expected in single-select fields, the same select2() call on a multi-select field does not add a search box.

var data = []; // Programatically-generated options array with > 5 options
var placeholder = "select";
$(".mySelect").select2({
    data: data,
    placeholder: placeholder,
    allowClear: false,
    minimumResultsForSearch: 5});

Does select2 not support search boxes with multi-selects? Does anyone have a good similarly-functioning alternative?

jquery-select2 jquery javascript
4 Answers

You can use dropdownAdapter options to set original Dropdown with SearchBox. This code working for me (select2 v. 4.0.13):

//Set Dropdown with SearchBox via dropdownAdapter option (https://stackoverflow.com/questions/35799854/how-to-add-selectall-using-dropdownadapter-on-select2-v4)
var Utils = $.fn.select2.amd.require('select2/utils');
var Dropdown = $.fn.select2.amd.require('select2/dropdown');
var DropdownSearch = $.fn.select2.amd.require('select2/dropdown/search');
var CloseOnSelect = $.fn.select2.amd.require('select2/dropdown/closeOnSelect');
var AttachBody = $.fn.select2.amd.require('select2/dropdown/attachBody');

var dropdownAdapter = Utils.Decorate(Utils.Decorate(Utils.Decorate(Dropdown, DropdownSearch), CloseOnSelect), AttachBody);

$('#select2').select2({
    ...
    dropdownAdapter: dropdownAdapter,
    minimumResultsForSearch: 0,
    ...
}).on('select2:opening select2:closing', function (event) {
    //Disable original search (https://select2.org/searching#multi-select)
    var searchfield = $(this).parent().find('.select2-search__field');
    searchfield.prop('disabled', true);
});
user_2895180

If none of the answers above work for you (new comers), consider wrapping everything between $(document).ready(function() { // your select2 declaration here... }); Sometimes it's a common issue!

user_20410960
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