title: Empty first element in dropdown list
body: <p>I am quite a beginner with AngularJS and currently I am working on a web application in Django where I use AngularJS for the frontend part i can say. My problem is that the dropdown list which is populated with objects from a scope always start with a blank element (if i select one from the list, the issue is gone). This create problems because if the user doesn't select anything the POST request normally it will not work anymore. I would like to know how to have something like a preselected value or something similar. Here's part of my code:</p>
  
  <p>Select tag:</p>
  
  <pre><code>&lt;select id="sel" class="input-block-level" ng-model="list_category"&gt;
              &lt;option ng-repeat="obj in list_categories.data" value="{{obj.id}}"&gt;{{obj.name}}&lt;/option&gt;
              &lt;option value="Other"&gt;Other&lt;/option&gt;
          &lt;/select&gt;
  </code></pre>
  
  <p>$scope.list_categories:</p>
  
  <pre><code>var listcategoryPromise = ListCategory.get();
      listcategoryPromise.then(function(response) {
          $scope.list_categories = {
              meta : response.data.meta,
              data : response.data.objects
          };
      });
  </code></pre>