$http upload file progress in AngularJS

Question

How can I get a 'progress' event from my AngularJS $http POST request that is uploading an image? Is it possible to do this client-side, or do I need the server to report the progress as it receives the data?

Answer 1

Using pure angular:

function upload(data) {
    var formData = new FormData();
    Object.keys(data).forEach(function(key){formData.append(key, data[key]);});
    var defer = $q.defer();
    $http({
        method: 'POST',
        data: formData,
        url: <url>,
        headers: {'Content-Type': undefined},
        uploadEventHandlers: { progress: function(e) {
            defer.notify(e.loaded * 100 / e.total);
        }}
    }).then(defer.resolve.bind(defer), defer.reject.bind(defer));
    return defer.promise;
}

and somewhere else ...

// file is a JS File object
upload({avatar:file}).then(function(responce){
    console.log('success :) ', response);
}, function(){
    console.log('failed :(');
}, function(progress){
    console.log('uploading: ' + Math.floor(progress) + '%');
});