Ariel Livshits Ariel Livshits - 1 month ago 8
AngularJS Question

AngularJS : use local storage

I want to save my web data in the local storage. I have a table which I add to it data, it works with AngularJS. I would like the data to be saved, how do I do it ?

the code :
the html code :

<!doctype html>
<html ng-app="ui.bootstrap.demo">

<head>
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.4.3/angular.js"></script>
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.4.3/angular-animate.js"></script>
<script src="//angular-ui.github.io/bootstrap/ui-bootstrap-tpls-0.13.3.js"></script>
<script src="app.js"></script>
<link href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
</head>

<body>

<div ng-controller="AppCtrl" >
<button type="button" class="btn btn-default" ng-click="openR()"> add user </button>
<button type="button" class="btn btn-default" ng-click="openC()"> connect </button>
<div class="btn btn-success" ng-show="User.connected">{{User.username}} is connected</div>
<table>
<thead>
<th class="col-lg-3">Username</th>
<th class="col-lg-3">Password</th>
<th class="col-lg-3">First name</th>
<th class="col-lg-3">Last name</th>
</thead>
<tbody>
<tr ng-repeat="User in Users.slice(((currentPage-1)*itemsPerPage), ((currentPage)*itemsPerPage))">
<td class="col-lg-3">{{User.userN}}</td>
<td class="col-lg-3">{{User.PassW}}</td>
<td class="col-lg-3">{{User.Name}}</td>
<td class="col-lg-3">{{User.LastName}}</td>
</tr>
</tbody>
</table>
<div>
<pagination total-items="totalItems" ng-model="currentPage" max-size="maxSize" class="pagination-sm" boundary-links="true" rotate="false" num-pages="numPages" items-per-page="itemsPerPage"></pagination>
</div>
</div>
<script type="text/ng-template" id="table.html">
<form ng-submit="okR()">
<div class="modal-header" >
<h3>users</h3>
</div>
<div class="modal-body">
<div class="panel-body">
<div class="form-group">
<label>Username :</label>
<input type="text" placeholder="Ariel73" ng-model="userN">
</div>
<div class="form-group">
<label>Password :</label>
<input type="text" placeholder="Aa123456" ng-model="PassW">
</div>
<div class="form-group">
<label>First name :</label>
<input type="text" placeholder="Ariel" ng-model="Name">
</div>
<div class="form-group">
<label>Last name :</label>
<input type="text" placeholder="Livshits" ng-model="LastName">
</div>
</div>
<div class="modal-footer">
<button type="submit" class="btn btn-success">Submit</button>
</div>
</div>
</form>
</script>
<script type="text/ng-template" id="connect.html">
<form ng-submit="okC()">
<div class="modal-header" >
<h3>users</h3>
</div>
<div class="modal-body">
<div class="panel-body">
<div class="form-group">
<label>Username :</label>
<input type="text" placeholder="Ariel73" ng-model="username">
</div>
<div class="form-group">
<label>Password :</label>
<input type="text" placeholder="Aa123456" ng-model="password">
</div>
</div>
<div class="modal-footer">
<button type="submit" class="btn btn-success">Submit</button>
</div>
</div>
</form>
</script>
</body>

</html>


the angular app code :

app = angular.module('ui.bootstrap.demo', ['ngAnimate', 'ui.bootstrap']);
app.controller('AppCtrl', function($scope, $modal, $log ) {
$scope.Users = [{
'userN': 'Ariel1',
'PassW': 'Aa123456',
'Name': 'Ariel',
'LastName': 'Livshits'
}, {
'userN': 'Ariel2',
'PassW': 'Aa123456',
'Name': 'Ariel',
'LastName': 'Livshits'
}, {
'userN': 'Ariel3',
'PassW': 'Aa123456',
'Name': 'Ariel',
'LastName': 'Livshits'
}, {
'userN': 'Ariel4',
'PassW': 'Aa123456',
'Name': 'Ariel',
'LastName': 'Livshits'
}, {
'userN': 'Ariel5',
'PassW': 'Aa123456',
'Name': 'Ariel',
'LastName': 'Livshits'
}, {
'userN': 'Ariel6',
'PassW': 'Aa123456',
'Name': 'Ariel',
'LastName': 'Livshits'
}, {
'userN': 'Ariel6',
'PassW': 'Aa123456',
'Name': 'Ariel',
'LastName': 'Livshits'
}, {
'userN': 'Ariel6',
'PassW': 'Aa123456',
'Name': 'Ariel',
'LastName': 'Livshits'
}];

$scope.User = {
'username': '',
'Password': '',
'connected': false
};
$scope.viewby = 3;
$scope.totalItems = $scope.Users.length;
$scope.currentPage = 4;
$scope.itemsPerPage = $scope.viewby;
$scope.maxSize = (($scope.Users.length / 3) + 1) ; //Number of pager buttons to show

$scope.setPage = function (pageNo) {
$scope.currentPage = pageNo;
};

$scope.pageChanged = function() {
console.log('Page changed to: ' + $scope.currentPage);
};

$scope.setItemsPerPage = function(num) {
$scope.itemsPerPage = num;
$scope.currentPage = 1; //reset to first paghe
};


$scope.openR = function() {

var modalInstance = $modal.open({
templateUrl: 'table.html',
controller: 'ModalInstanceCtrl'
});
modalInstance.result.then(function(newUser) {
$scope.Users.push(newUser);
}, function() {
$log.info('Modal dismissed at: ' + new Date());
});
};
$scope.openC = function() {

var modalInstance = $modal.open({
templateUrl: 'connect.html',
controller: 'ModalInstanceCtrl'
});
modalInstance.result.then(function(conUser) {
$scope.User = conUser;
}, function() {
$log.info('Modal dismissed at: ' + new Date());
});
};
});

// Please note that $modalInstance represents a modal window (instance) dependency.
// It is not the same as the $modal service used above.

app.controller('ModalInstanceCtrl', function($scope, $modalInstance) {
$scope.okR = function() {
$modalInstance.close({
'userN': $scope.userN,
'PassW': $scope.PassW,
'Name': $scope.Name,
'LastName': $scope.LastName
});
};

$scope.okC = function() {
$modalInstance.close({
'username': $scope.username,
'Password': $scope.password,
'connected': true
});
};

$scope.cancel = function() {
$modalInstance.dismiss('cancel');
};
});

Answer

AngularJS Service: Using window.localStorage directly is just fine, but having to set and parse Strings gets tiresome after a while. Use this simple AngularJS service for setting and retrieving strings or objects easily:

angular.module('ionic.utils', [])

.factory('$localstorage', ['$window', function($window) {
  return {
    set: function(key, value) {
      $window.localStorage[key] = value;
    },
    get: function(key, defaultValue) {
      return $window.localStorage[key] || defaultValue;
    },
    setObject: function(key, value) {
      $window.localStorage[key] = JSON.stringify(value);
    },
    getObject: function(key) {
      return JSON.parse($window.localStorage[key] || '{}');
    }
  }
}]);

And to use this service, just inject the $localstorage service into a controller or run function:

angular.module('app', ['ionic', 'ionic.utils'])

.run(function($localstorage) {

  $localstorage.set('name', 'Max');
  console.log($localstorage.get('name'));
  $localstorage.setObject('post', {
    name: 'Thoughts',
    text: 'Today was a good day'
  });

  var post = $localstorage.getObject('post');
  console.log(post);
});
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