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POAngularJS Passing Variable to Directive
 

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  1. POAngularJS Passing Variable to Directive
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    <p>I'm new to angularjs and am writing my first directive. I've got half the way there but am struggling figuring out how to pass some variables to a directive.</p> <p>My directive:</p> <pre><code>app.directive('chart', function () { return{ restrict: 'E', link: function (scope, elem, attrs) { var chart = null; var opts = {}; alert(scope[attrs.chartoptions]); var data = scope[attrs.ngModel]; scope.$watch(attrs.ngModel, function (v) { if (!chart) { chart = $.plot(elem, v, opts); elem.show(); } else { chart.setData(v); chart.setupGrid(); chart.draw(); } }); } }; }); </code></pre> <p>My controller:</p> <pre><code>function AdListCtrl($scope, $http, $rootScope, $compile, $routeParams, AlertboxAPI) { //grabing ad stats $http.get("/ads/stats/").success(function (data) { $scope.exports = data.ads; if ($scope.exports &gt; 0) { $scope.show_export = true; } else { $scope.show_export = false; } //loop over the data var chart_data = [] var chart_data_ticks = [] for (var i = 0; i &lt; data.recent_ads.length; i++) { chart_data.push([0, data.recent_ads[i].ads]); chart_data_ticks.push(data.recent_ads[i].start); } //setup the chart $scope.data = [{data: chart_data,lines: {show: true, fill: true}}]; $scope.chart_options = {xaxis: {ticks: [chart_data_ticks]}}; }); } </code></pre> <p>My Html:</p> <pre><code>&lt;div class='row-fluid' ng-controller="AdListCtrl"&gt; &lt;div class='span12' style='height:400px;'&gt; &lt;chart ng-model='data' style='width:400px;height:300px;display:none;' chartoptions="chart_options"&gt;&lt;/chart&gt; {[{ chart_options }]} &lt;/div&gt; &lt;/div&gt; </code></pre> <p>I can access the <code>$scope.data</code> in the directive, but I can't seem to access the <code>$scope.chart_options</code> data.. It's definelty being set as If I echo it, it displays on the page..</p> <p>Any ideas what I'm doing wrong?</p> <p><strong>UPDATE:</strong> For some reason, with this directive, if I move the <code>alert(scope[attrs.chartoptions]);</code> to inside the $watch, it first alerts as "undefined", then again as the proper value, otherwise it's always undefined. Could it be related to the jquery flot library I'm using to draw the chart?</p> <p>Cheers, Ben</p>
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    1. USBen Kilah
    1. USBen Kilah
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    1. COTry to create a plunker or fiddle to isolate the problem and share here, so that someone can help
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    2. COYou should just be able to access `scope.chart_options` directly in the directive since you are not declaring a new scope in the directive.
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      1. USTim Withers
 

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