Angular JS Magazine

marți, 7 octombrie 2014

Custom Directive - Isolated Scope and Evaluating Expressions

In isolated scopes we can specify expressions as attributes and have them evaluated in the
controller scope:

<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <script src="../angular/angular.min.js"></script>
    <style type="text/css">
    </style>
    <script type="text/ng-template" id="playerTemplate">
        <div class="panel-body">
            <p>Players:
                {{playerslocal}}
            </p>
            <p>Court: {{courtlocal}}</p>
            <p>Injury: {{injurylocal()}}</p>
        </div>
    </script>
    <script>
        angular.module("appModule", [])
                .controller("appCtrl", function ($scope) {
                    $scope.injury = "No";
                    $scope.court = {name: "Philippe Chatrier"};
                    $scope.players = [
                        { name: 'Nadal, Rafael (ESP)', rank: 1, age: '28', prizemoney: 66149345 },
                        { name: 'Djokovic, Novak (SRB)', rank: 2, age: '27', prizemoney: 70704129 },
                        { name: 'Federer, Roger (SUI)', rank: 3, age: '33', prizemoney: 84827704 },
                        { name: 'Wawrinka, Stan (SUI)', rank: 4, age: '29', prizemoney: 13155060 },
                        { name: 'Ferrer, David (ESP)', rank: 5, age: '32', prizemoney: 24034072 },
                        { name: 'Tsonga, Jo-Wilfried (FRA)', rank: 11, age: '29', prizemoney: 1708240 },
                        { name: 'Simon, Gilles (FRA)', rank: 26, age: '29', prizemoney: 760469 },
                        { name: 'Lopez, Feliciano (ESP)', rank: 20, age: '33', prizemoney: 1100579 },
                        { name: 'Benneteau, Julien (FRA)', rank: 28, age: '32', prizemoney: 617688 },
                        { name: 'Verdasco, Fernando (ESP)', rank: 33, age: '30', prizemoney: 689219 },
                        { name: 'Mayer, Leonardo (ARG)', rank: 25, age: '27', prizemoney: 946294 }
                    ];
                    $scope.getInjury = function (medicalreport) {
                        return medicalreport == "yes" ? "Yes" : $scope.injury;
                    }
                })
                .directive("nextMatch", function () {
                    return {
                        template: function () {
                            return angular.element(
                                    document.querySelector("#playerTemplate")).html();
                        },
                        scope: {
                            injurylocal: "&injuryattr",
                            courtlocal: "@courtattr",
                            playerslocal: "@playersattr"
                        }
                    }
                });
    </script>
</head>
<body>
<div ng-app="appModule" ng-controller="appCtrl">
    Next match on Roland Garros:
    <table>
        <tr>
            <td>
                <div next-match injuryattr="getInjury('yes')" 
                         courtattr="{{court.name}}" playersattr="{{players}}"></div>
            </td>
            <td>
                <div next-match injuryattr="getInjury('no')"
                          courtattr="{{court.name}}" playersattr="{{players}}"></div>
            </td>
        </tr>
    </table>
</div>
</body>
</html>