How to pass data from controller to custom directive - angularjs

Question

I am creating a custom directive in AngularJS. This directive should open a popup to display data. The code for the popup is in another html page and the custom directive injects the code into my main page. I am able to open the popup however I cannot display the existing data anywhere in the pop up.
Normally, I am able to display the data in the main page however the data just do not want to go into the html injected by the custom directive.
Like this I do not get any error however it does not pass the data.
Note: I had to trim some of the code here to simplify it.
This is my custom directive:
function updateCandidatePopup() {
var directive = {};
directive.restrict = "E";
directive.scope = {};
directive.templateUrl = "UpdateCandidatePopup.html";
directive.controller = function ($scope) {
$scope.SingleCandidate;
}
return directive;
}
This is where I register it:
myApp.directive("updateCandidatePopup", UpdateCandidatePopup);
This is how I use the directive in the mainpage
<update-candidate-popup value="SingleCandidate" class="modal fade" ng-model="SingleCandidate"
id="myUpdateModal"
role="dialog"
popup-data="SingleCandidate">
zxc</update-candidate-popup>
This is the UpdateCandidatePopup.html:
<div> {{SingleCandidate.FirstName}} </div>
This is the to display the data in the pop up controller: (FYI it is still trimmed)
myApp.controller('CandidatesController', function ($scope, $http, EmployerService, CandidateService) { //we injected localservice
//Select single data for update
$scope.getSingleData = function (C_ID) {
alert(C_ID);
$http.get('http://localhost:49921/api/Candidates/?C_ID=' + C_ID).success(function (data) {
$scope.SingleCandidate = data;
$scope.FName = $scope.SingleCandidate.FirstName;
alert($scope.SingleCandidate.FirstName);
alert($scope.FName);
}).error(function () {
$scope.error = "An Error has occured while loading posts!";
});
};
});

Answer 1

Sorry wrong !, answered your question, here I leave I found a code that will serve for your problem. In the background to the template you want to take, you let a controller and in the statement of your policy, put you going to do with those values, I think in your case is just printing.
myApp.directive('editkeyvalue', function() {
return {
restrict: 'E',
replace: true,
scope: {
key: '=',
value: '=',
accept: "&"
},
template : '<div><label class="control-label">{{key}}</label>' +
'<label class="control-label">{{key}}</label>' +
'<input type="text" ng-model="value" />'+
'<button type="button" x-ng-click="cancel()">CANCEL</button>' +
'<button type="submit" x-ng-click="save()">SAVE</button></div>',
controller: function($scope, $element, $attrs, $location) {
$scope.save= function() {
console.log('from directive', $scope.key, $scope.value);
$scope.accept()
};
}
}
});
jsFiddle

Answer 2

Solved the problem like below. It was only to inject to $scope in the directive controller.
myApp.directive("updateCandidatePopup", function () {
return {
templateUrl : "UpdateCandidatePopup.html",
restrict: 'E',
controller: function ($scope) {
}
}
});