select2 为每个选项手动设置选项属性

Question

i have select2 dropdown like:

 <select class="form-control validateblank txtSelectChallan" id="txtSelectChallan" />

and i am setting dropdown data by ajax call like:

   $.ajax({
    type: "POST",
    url: "/Account/MaterialSheet.aspx/GetMaterialSheetByLedgerId",
    data: '{LedgerId: "' + AccId + '"}',
    contentType: "application/json; charset=utf-8",
    dataType: "json",
    success: function (data) {
        if (data.d.Result == "OK") {
            var challanresults = [];
            $.each(data.d.Records, function (index, challn) {
                challanresults.push({
                    id: challn.MaterialSheet_ID,
                    text: challn.Challan_No,
                    Amount: challn.Total_Amount
                });
            });

            eachtr.find('.txtSelectChallan').select2({
                placeholder: "Select Challan",
                data: challanresults,
                multiple: true
            });
            swal.close();
            challanresults = null;
        }
    },
    error: function (err) {
        swal(
           'Oops...',
           'Error occured while retrieving data',
           'error'
         );
    }
});

and i get dropdown like :

<select class="form-control validateblank txtSelectChallan select2 hidden-accessible" id="txtSelectChallan" tabindex="-1" aria-hidden="true" multiple="">
  <option value="1006">123123</option>
  <option value="1007">32123</option>

i have tried to set option attribute using:

             challanresults.push({
                    id: challn.MaterialSheet_ID,
                    text: challn.Challan_No,
                    Amount: challn.Total_Amount
                });

but i cant get amout as option attribute any idea how to set custom attribute for all option in select2 ?

Answer 1

Try like this inside foreach loop, and set the trigger after that.

var data = {
id: challn.MaterialSheet_ID,
text: challn.Challan_No
};

var newOption = new Option(data.text, data.id, false, false);
$('#txtSelectChallan').append(newOption).trigger('change');

Check this link for further solution on custom attributes

Or Simply you can do like this in a loop for the result set var option = "<option value="+challn.MaterialSheet_ID+" amount="+challn.Total_Amount+">"+challn.Challan_No+"</option>

This is what Select2 Official Site has to say about custom-data-fields

$('#mySelect2').select2({
// ...
templateSelection: function (data, container) {
// Add custom attributes to the <option> tag for the selected option
$(data.element).attr('data-custom-attribute', data.customValue);
return data.text;
}
});

// Retrieve custom attribute value of the first selected element
$('#mySelect2').find(':selected').data('custom-attribute');

Click here for the above reference link