Passing Custom Headers to Ajax request on Select2

Question

We are trying to implement Ajax Remote data loading in Select2:-

 $scope.configPartSelect2 =  {
        minimumInputLength: 3,
        ajax: {
            ur         


        

Answer 1

Taken from select2's demo page:

Select2 will pass any options in the ajax object to jQuery's $.ajax function, or the transport function you specify.

Using JQuery 2+, I was able to successfully set OAuth 2.0 and Content-Type headers.

ajax: {
    headers: {
        "Authorization" : "Bearer "+Cookies.get('accessToken'),
        "Content-Type" : "application/json",
    },
}

Answer 2

You can do like this:

transport: function (params, success, failure) {

    params.beforeSend = function (request) {
        request.setRequestHeader("Authorization-Token", http.defaults.headers.common['Authorization-Token']);
    };
    var $request = $.ajax(params);

    $request.then(success);
    $request.fail(failure);

    return $request;
}

Answer 3

another option:

ajax: {
    url: '/api/Part',
    params: { headers: { "Authorization": "XXX" } },
    ...
}

Answer 4

I solved my above problem by supplying custom transport method.. Then I was stuck with Drop-down item not getting selected on mouse hover & drop-down item not being selected after click. After debugging I found proeprty "id" is must to have in returned json object.

Below is my code:-

    var fetchPart = function (queryParams) {

        var result = http.get(queryParams.url, queryParams.data).success(queryParams.success);

    result.abort = function() {
        return null;
    };
    return result;
};

var partFormatResult = function (part) {
    return "<div><h4>" + part.PartNumber + "</h4><p>"+ part.PartDescription + "</p></div>";
};

var partFormatSelection = function (part, container) {
    console.log(part.Id + "number - " + part.PartNumber);
    return part.PartNumber;
//    return part.PartNumber;
    //return part.Id;
};

$scope.configPartSelect2 =  {
    minimumInputLength: 3,
    ajax: {
        url: "/api/Part",
        data: function (term, page) {
            return { params: { isStockable: true, query: term, pageNo: page } };
        },
        transport: fetchPart,
        results: function (data, page) {
            console.log("result is called by select2");
            var more = (page * 10) <= data.length; // whether or not there are more results available
            return { results: data, more: more };
        }
    },
    formatResult: partFormatResult,
    formatSelection: partFormatSelection,
    dropdownCssClass: "bigdrop" // apply css that makes the dropdown taller
};

Answer 5

This is how I fixed sending auth token. Just add this as Select2 ajax param;

transport: function(params){
    params.beforeSend = function(request){
        request.setRequestHeader("Authorization", 'OAuth ' + api_access_token);
    };
    return $.ajax(params);
},