olatom olatom - 28 days ago 12
AngularJS Question

AngularJS - Passing data between pages

I am an AngularJS starter. I am trying to send data from :


  • Page A : Van Listing page

    to

  • Page B: Van Update page.



When user click the update link for a van, I am invoking a controller and retrieving the van details in the controller. But, I cannot assign the van details to the Page B ( Van Update Page) using the same controller... Error
"Cannot set property 'vanNumber' of undefined"


*** Page A: Van List ****

<form name="listVanForm" >
<table>
<tr> <td ng-controller="VanUpdateCtrl"><a href="#/van-update" ng-click="prePopulateForm(row.members.vanNumber.value )" class="btn btn-small btn-primary">update</a></td> </tr>
</table>
</form>

*** Page B: Van Update ****

<div class="container">
<h2>Edit Van </h2>

<form name="updateVanForm" novalidate="novalidate" class="form-horizontal" ng-submit="updateCard(formData)">
<div class="control-group">
<label class="control-label" >Van Number:</label>

<div class="controls">
<input type="text" id="vanNumber" ng-model="formData.vanNumber" placeholder=""/>
</div>
</div>
</form>
</div>

*** VanUpdateCtrl **

app.controller('VanUpdateCtrl', ['$scope', 'VanUpdateFactory', '$location',
function ($scope, VanUpdateFactory, $location) {

//callback for ng-init 'populateDD':
$scope.prePopulateForm = function (cardNoParam m) {

alert('cardNo = '+cardNoParam);

$scope.formData.cardNumber=cardNoParam;}
}

So, $scope.formData.cardNumber OR $scope.formData in the destination page is not recognised.

Answer

You need to create a service to be able to share data between controllers.

app.factory('myService', function() {
 var savedData = {}
 function set(data) {
   savedData = data;
 }
 function get() {
  return savedData;
 }

 return {
  set: set,
  get: get
 }

});

In your controller A:

myService.set(yourSharedData);

In your controller B:

$scope.desiredLocation = myService.get();

Remember to inject myService in the controllers by passing it as a parameter.