title: Trouble in directive template
body: <p>i have a <strong>directive</strong> without isolate scope, with this section of his template : </p>
  
  <pre><code>&lt;li ng-repeat="filter in listFilters"&gt;
  &lt;p id="filter{{filter.option}}Container"&gt;
      &lt;input ng-keypress="filterPress($event)" ng-model="filterTag['{{filter.option}}']" data-opt="{{filter.option}}" type="text" /&gt;
      &lt;label for="filter{{filter.option}}"&gt;Filter&lt;/label&gt;
      &lt;button ng-click="addTag('{{filter.option}}')"&gt;OK&lt;/button&gt;
  &lt;/p&gt;
  </code></pre>
  
  <p></li></p>
  
  <p>And my <strong>controller</strong> has this :</p>
  
  <pre><code>mapCtrl.controller('mapCtrl', ['$scope', function ($scope, $http, $window, $sce, $compile) {
  $scope.listTags = [];
  $scope.filterTag = [];
  $scope.addTag = function (opt) {
      if (typeof $scope.filterTag[opt] != "undefined" &amp;&amp; $scope.filterTag[opt].trim() != "") {
          if (!$scope.listTags[opt]) {
              $scope.listTags[opt] = []
          }
          if ($scope.listTags[opt].indexOf($scope.filterTag[opt]) == -1) {
              $scope.listTags[opt].push($scope.filterTag[opt]);
              $scope.filterTag[opt] = "";
          }
          $scope.setMarkersVisible();
      }
  }}])
  </code></pre>
  
  <p>so, when show the result HTML with the debugger (chrome) it's ok, but if i click the function <strong>addTag</strong> does'nt work. I add a console.log(opt) at first in this function, and the console return <strong><em>{{filter.option}}</em></strong> or with the debugger i see <strong>addTag("myOpt")</strong>.</p>
  
  <p>I have the same problem in the same directive with this part (see the first html code) :</p>
  
  <pre><code> ng-model="filterTag['{{filter.option}}']" 
  </code></pre>
  
  <p>with the debugger i see <strong><em>ng-model="filterTag['myOpt']"</em></strong> but if i log <strong>filterTag['myOpt']</strong> from my controller <strong>mapCtrl</strong> is undefined....</p>
  
  <p>please help me :(</p>
  
  <p><strong>I specify : I have to pass this param in addTag</strong></p>