title: calling method of parent controller from a directive in AngularJS
body: <p>Following my previous <a href="https://stackoverflow.com/questions/15990122/passing-object-to-angularjs-directive-from-the-controller">question</a>, I'm now trying to call a method on the parent controller from my directive. I get an undefined parameter. Here's what I do:</p>
  
  <pre><code>&lt;body ng-app="myApp" ng-controller="MainCtrl"&gt;
    &lt;span&gt;{{mandat.rum}}&lt;/span&gt;
    &lt;span&gt;{{mandat.surname}}&lt;/span&gt;
  &lt;input type="text" ng-model="mandat.person.firstname" /&gt;
  &lt;my-directive mandate-person="mandat.person" updateparent="updatePerson()" &gt;
  
    &lt;/my-directive&gt;
  &lt;/body&gt;
  </code></pre>
  
  <p>And the script:</p>
  
  <pre><code>var app = angular.module('myApp', []);
  
      app.controller('MainCtrl', function ($scope) {
          $scope.mandat = { name: "John", surname: "Doe", person: { id: 1408, firstname: "sam" } };
          $scope.updatePerson = function(person) {
              alert(person.firstname);
            $scope.mandat.person = person;   
          }
      });
  
  
      app.directive('myDirective', function () {
          return {
              restrict: 'E',
              template: "&lt;div&gt;&lt;span&gt;{{mandatePerson.id}}&lt;span&gt;&lt;input type='text' ng-model='mandatePerson.firstname' /&gt;&lt;button ng-click='updateparent({person: mandatePerson})'&gt;click&lt;/button&gt;&lt;/div&gt;",
              replace: true,
              scope: { mandatePerson: '=', updateparent: '&amp;' }
              }
          }
      )
  </code></pre>
  
  <p>when the updatePerson method gets called, person is undefined.</p>
  
  <p>jsfiddle here :  <a href="http://jsfiddle.net/graphicsxp/Z5MBf/7/" rel="noreferrer">http://jsfiddle.net/graphicsxp/Z5MBf/7/</a></p>