AngularJS controller unable to access RESTful API

Let me break this down simply for you. I have set up a Node and Express server with MySQL running a RESTful API. The common get, post, put, delete methods are all working fine as I can test them using Postman and directly in Chrome. This setup is currently running locally on my machines. Specifically, I have an Ubuntu box hosting the REST api. When I query it in Chrome, I get the expected output of the fields I am working with.

For example, when I make a request to "", this is the response I receive:

{
"Plates": [
    {
        "lot_number": "P234",
        "plate_number": "NGE-781",
        "date_and_time": "2016-07-08T21:14:31.000Z"
    },
    ...
   ]
 }

The above data represents some sample entries from my MySQL database that are successfully displayed on screen. However, my issue arises when I attempt to create a basic HTML page with an Angular script to display this data. Instead of seeing the information, all I get is a blank page. Interestingly, when I run the same code with other online APIs, everything works perfectly fine. I will share the identical code snippet below for reference.

<!DOCTYPE html>
<html>
</style>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<body>

<div ng-app="myApp" ng-controller="platesCtrl">

{{plates}}

</div>

<script>
var app = angular.module('myApp', []);
app.controller('platesCtrl', function($scope, $http) {
   $http.get("http://192.168.239.130:1337/api/plates")
   .then(function (response) {$scope.plates = response.data;});
});
</script>

</body>
</html>

Despite this code working flawlessly with external APIs, it fails to render the data from my local API. Could this be due to its local nature? Even though I can easily access the JSON output by visiting the corresponding address in a browser.

If you have any insights or suggestions, please feel free to share.

Thank you.

Answer №1

After considering feedback from other users, I decided to investigate and resolve an error on my own. Upon examining the console, I discovered a cross-domain issue with a missing 'Access-Control-Allow-Origin' header. To remedy this, I made modifications to my API calling functions by including the following code snippet:

res.header("Access-Control-Allow-Origin", "*");

This solution resolved the issue temporarily, although I acknowledge that there may be more sophisticated approaches to address the same problem.

I appreciate the guidance provided. Thank you.

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