Tips for managing ng-click to route asynchronously to server-side controller?

I'm having some difficulties incorporating AngularJS into my web application and I need assistance with implementing the onClick event for my upload button.

Check out this snippet from my code:

 <form action="" method="post" enctype="multipart/form-data>
        <table style="margin-top:20px">
            <tr>
                <td><label for="file">Filename:</label></td>
                <td><input type="file" name="file" id="file" accept=".csv" /></td>
                <td><button type="submit" value="Upload" ng-click="uploadFile()" /></td>
            </tr>
        </table>
    </form>

In the Controller (ASP.NET MVC):

 [HttpPost]
 public ActionResult Index(HttpPostedFileBase file)
 { 
    //CSvReader reads in contents of the file and adds them to a list
    //Stores the list in session
 } 

The challenge lies in writing the AngularJS script for the uploadFile() method.

I believe that, upon clicking, I need to utilize an $http service to post the data to my controller. However, I am unsure about how to accomplish this. How can I pass the necessary information from my view to my server-side controller? Are there additional steps I need to take in my AngularJS script apart from using that service?

Furthermore, I would like to know where should I place my onClick event within my module's code?

var myApp = angular
                .module("myModule", [])
                .controller("myController", function ($scope) {

                $scope.uploadFile = function () {
                    // your upload logic here
                    var data = {
                        //file? What should be included in data?
                    };

                $http
                    .post('Home/Index', data)
                    .success(function (data, status, headers, config) {
                    })
                    .errors(function (data, status, headers, config) {
                    });
                };

            });

Answer №1

Your controller is where the onclick handler logic should be placed:

var myApp = angular
                .module("myModule", [])
                .controller("myController", function ($scope) {

                $scope.uploadFile = function() {
                // insert your upload logic here
                }

            });

To access the values of your form, you must bind each form field to a model. However, file upload functionality is not built into Angular by default. There are various modules available that can help you achieve this:

Learn more about File Upload using AngularJS here

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