Cross-origin resource sharing for an Ionic app and server

I'm fairly new to AngularJS and I am facing an issue in my Ionic app where I am trying to send a JSON to my server. Here is the code snippet from the controller:

`enter code here`.controller('DashCtrl', ['$scope','$http',function($scope, $http) {
    $scope.formData = {};
    $scope.sendForm = function(){
         
        $http({
        method  : 'POST',
        url     : 'http://www.---.org/appForm.php',
        data    : JSON.stringify($scope.formData),  
        headers : {'Access-Control-Allow-Origin':'*'}
        })
        .success(function(data) {
            console.log(data);

            if (!data.success) {
                $scope.errorName = data.errors.name;
                $scope.errorSuperhero = data.errors.superheroAlias;
            } else {
                $scope.message = data.message;
            }
        });
    };

However, when I try to send the POST request, the console displays the following error messages:

-[Error] Failed to load resource: Origin htt.. is not allowed by Access-Control-Allow-Origin. (appForm.php, line 0)

-[Error] XMLHttpRequest cannot load htt.. Origin http://localhost:8100 is not allowed by Access-Control-Allow-Origin. (localhost, line 0)

I attempted to add this .htaccess file in my home directory:

Header add Access-Control-Allow-Origin "*" Header add Access-Control-Allow-Headers "origin, x-requested-with, content-type" Header add Access-Control-Allow-Methods "PUT, GET, POST, DELETE, OPTIONS"

but it resulted in another error:

-Failed to load resource: the server responded with a status of 500 (Internal Server Error).

I'm feeling quite frustrated! Does anyone have any suggestions or ideas? Thank you for your attention.

Answer №1

To include a service proxy in your ionic.project configuration file, follow these steps:

{
  "name": "appname",
  "email": "",
  "app_id": "",
  "proxies": [
    {
      "path": "/v1",
      "proxyUrl": "https://api.instagram.com/v1"
    }
  ]
}

For more information on this topic, refer to the relevant section at https://github.com/driftyco/ionic-cli

Answer №2

To access the Chrome directory via command line, follow these steps:

C:\Program Files (x86)\Google\Chrome\Application

Enter:

chrome.exe --disable-web-security

In your browser, navigate to http://localhost:8100, and your issue will be resolved

Answer №3

Dealing with cross-origin issues is crucial in the development of Ionic framework.

Check out this informative blog post by the Ionic team that explains the problem thoroughly.

Here's an overview:

Step 1: Update proxy details in your ionic.project file

{
 "name": "proxy-example",
  "app_id": "",
  "proxies": [
    {
      "path": "/api",
      "proxyUrl": "http://cors.api.com/api"
    }
  ]
}

Step 2: Consider adding an angular constant to manage external endpoints for better organization (optional)

angular.module('starter', ['ionic', 'starter.controllers', 'starter.services'])
.constant('ApiEndpoint', {
  url: 'http://localhost:8100/api'
})

Step 3: Don't forget to restart "ionic serve" to apply the changes made in ionic.project

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