JavaScript Angular + image upload. Having trouble getting form data to back end angular image upload with preview,angular image upload component,angular

I have been struggling to include a profile picture upload along with regular text data and send that all to the back end to create a new user through mongoose. I have tried everything from ng-file-upload/angular-file-upload to building a custom directive but to not avail I still can't get the image or the data to make it to the server side.

My photo upload html snippet can be seen below:

  <div ng-show="!Login">
    <label class="col-xs-12 col-sm-4">Profile Picture</label>
    <div class="col-xs-12 col-sm-4">
      <input type="file" file-input="files" multiple/>
      <button ng-click="upload()">Upload</button>
    </div>
  </div>

I've created a custom directive "file-input" that looks like this:

app.directive('fileInput', ['$parse', function($parse){
  return {
  restrict: "A",
  link: function(scope, elm, attrs){
    elm.bind("change", function(){
      $parse(attrs.fileInput)
      .assign(scope, elm[0].files)
      scope.$apply()
    });
  }
} 
}])

and my controller looks like this:

  $scope.upload = function(){
    var fd = new FormData();
    fd.append('file', $scope.files[0])
    console.log(fd);
    userFactory.addPhoto(fd)
    .success(function(data){
      console.log("Data: ", data);
    })
  }

this is my service for the form data post to the backend:

   userFactory.addPhoto = function(fd){
    return $http.post('/users/addPhoto', fd, {
      transformRequest:angular.identity,
      headers:{
        'Content-Type': undefined
      }
    })
  }

So the problem with this is that when I send the data to the backend and it gets there I get a blank req.body object with nothing inside of it

router.post('/addPhoto', function(req, res, next){
  console.log(req.body);
  // var profilePicture = new Buffer(req.file.buffer, 'base64').toString('ascii')
  // console.log(profilePicture);
});

What's happening here? I'd like to get the image in a buffer in the backend so i can base64 encode it and store it in mongodb with mongoose.

If anyone has a way to send both the image and text data together by passing them into a ng-click function, getting them to the controller so I can put them both in an object, and then sending that object through to the backend together to register a new user I would greatly prefer that solution.

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