How do I save tags locally to my device?
I am trying to store tags with local storage. It doesn't work and I don't know what's going on with it.
app.js:
var app = angular.module('plunker', ['ngTagsInput']);
app.controller('MainCtrl', function($scope, $http) {
$scope.tags = [
{ text: 'Tag1' },
{ text: 'Tag2' },
{ text: 'Tag3' }
];
});
index.html
<!DOCTYPE html>
<html ng-app="plunker">
<head>
<meta charset="utf-8" />
<title>AngularJS Plunker</title>
<script>document.write('<base href="' + document.location + '" />');</script>
<link rel="stylesheet" href="style.css" />
<link rel="stylesheet" href="http://mbenford.github.io/ngTagsInput/css/ng-tags-input.min.css" />
<script data-require="angular.js@1.2.x" src="http://code.angularjs.org/1.2.28/angular.js" data-semver="1.2.15"></script>
<script src="http://mbenford.github.io/ngTagsInput/js/ng-tags-input.min.js"></script>
<script src="app.js"></script>
</head>
<body ng-controller="MainCtrl">
<tags-input ng-model="tags"></tags-input>
<p>Model: {{tags}}</p>
</body>
</html>
I'm trying to do this using localStorage so that the tags stay there when the user leaves the app, returns to another page, or just refreshes it.
window.localStorage['name'] = {{tags}};
Document link: http://learn.ionicframework.com/formulas/localstorage/
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You need to store your tag model in localStorage and update it every time the collection changes: remove / add tags. To do this, it is convenient to create an auxiliary service:
var app = angular.module('plunker', ['ngTagsInput']);
app.controller('MainCtrl', function($scope, $http, storage) {
$scope.tags = storage.get('tags') || [
{ text: 'Tag1' },
{ text: 'Tag2' },
{ text: 'Tag3' }
];
$scope.$watchCollection('tags', function(tags) {
storage.set('tags', tags);
});
});
app.factory('storage', function() {
return {
get: function(key) {
return JSON.parse(localStorage[key] || 'null');
},
set: function(key, value) {
window.localStorage[key] = JSON.stringify(value);
}
};
});
Notice how in your controller code, you check the stored items first and, if not available, drop the tags by default:
$scope.tags = storage.get('tags') || [
{ text: 'Tag1' },
{ text: 'Tag2' },
{ text: 'Tag3' }
];
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This code will read tags from localStorage, put it in controller
$scope.tags = JSON.parse(window.localStorage['tags'] || '[]');
This code will store the tags in localStorage:
window.localStorage['tags'] = JSON.stringify($scope.tags);
For example, a controller would look like this:
app.controller('MainCtrl', function($scope, $http) {
$scope.tags = JSON.parse(window.localStorage['tags'] || '[]');
//Another methods
});
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