Issue encountered while retrieving information from an external API

I am facing an issue with my HTML page that includes Google ADWords and an ajax call from an external URL to retrieve JSON data. The external API has been created by me, and the API Controller in Laravel 5.2 looks like this:

public function index()
{
    $data = WeatherData::orderBy('created_at', 'DESC')->first();

    return Response::json($data);
}

The HTML ADWords Code causing trouble is:

$.ajax({
        url: 'https://weather.mnsc.com/api/v1/data',
        type: 'POST',
        dataType: 'JSON',
        cors: true,
        success: function (data) {
            console.log(data);
        }
    });

Unfortunately, when testing in Chrome, I receive the following error message:

XMLHttpRequest cannot load . No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'null' is therefore not allowed access. The response had HTTP status code 500.

I am wondering if there is a specific header that needs to be set in the Laravel API to resolve this issue?

javascriptajax

Answer №1

To ensure a successful AJAX request, make sure to include the crossDomain: true property instead of a regular one. The cors option in $.ajax() is not valid, so it has been removed. For a full list of available options, refer to the jQuery.ajax() settings on the official documentation page:

$.ajax({
    url: 'https://weather.mnsc.com/api/v1/data',
    type: 'POST',
    dataType: 'JSON',
    crossDomain: true,
    success: function (data) {
        console.log(data);
    }
});

Answer №2

To ensure your cross domain jquery ajax works properly, make sure to include this line of code before initiating the ajax call.

$.support.cors = true;

Answer №3

It appears that I have identified the issue at hand. The problem seems to lie with the request type being used. By changing from post to get in the ajax call, the functionality now aligns with expectations.

$.ajax({
  url: 'https://weather.mnsc.com/api/v1/data',
  type: 'GET',
  dataType: 'JSON',
  crossDomain: true,
  success: function (data) {
     console.log(data);
  }
});

However, this resolution is not ideal for me as Google AdWords specifically necessitate a post request...

There's a suspicion that the Laravel API may be causing this issue, indicating that certain configurations need to be adjusted for handling post requests.

UPDATE:

Indeed, it seems that the hindrance with post requests stems from Larvael's csrf token.. I've managed to overcome this by temporarily disabling the relevant line within Kernel.php.

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