Save object to JSON file in angularjs?

Question

I am new to angularjs and trying create an single page application. I have a home controller with very simple code. Something along the lines of this tutorial

Angular JS controller is initialized with code like:

var phonecatApp = angular.module('phonecatApp', []);
phonecatApp.controller('PhoneListCtrl', function ($scope) {
  $scope.phones = [
    {'name': 'Nexus S',
     '_id': 1,
     'snippet': 'Fast just got faster with Nexus S.'},
    {'name': 'Motorola XOOM™ with Wi-Fi',
     '_id': 2,
     'snippet': 'The Next, Next Generation tablet.'},
    {'name': 'MOTOROLA XOOM™',
     '_id': 3,
     'snippet': 'The Next, Next Generation tablet.'}
  ];
});

but in production data might not be so neatly packed. Now my problem is:

Can I create a download link to a JSON representation of my objects?

<li ng-repeat="phone in phones">
<a 
  href="data:text/json;charset=utf-8,{{encodeURIComponent(JSON.stringify(phone))}}" 
  download="{{phone._id}}.json">
    JSON
</a>
</li>

I basically want to access the current object phone with the formatting function encodeURIComponent(JSON.stringify(phone)).

Is there a way to do this neatly?

Answer 1

I basically want to access the current object phone with the formatting function encodeURIComponent(JSON.stringify(phone)).

You simply add a method to your controller: working example (collections)

$scope.encodeJson = function(phone) {
  return encodeURIComponent(JSON.stringify(phone));
}

<a href="data:text/json;charset=utf-8,{{encodeJson(data)}}" download="{{filename}}">

You may also need sanitize the URL

For collections it's basically the same:

<p ng-repeat="item in collection">
  <a href="data:text/json;charset=utf-8,{{encodeJson(item)}}" download="{{item.id}}.json">
</p>

Additionally you may need remove the $$HashKey -added by ng-repeat- by using "track by item.id" syntax in the ng-repeat.

Another approach could be add those functions to the $scope itself and using them inside ng-* attributes.

$scope.encodeURIComponent = encodeURIComponent;
$scope.JSON = JSON;