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              <body class="container" ng-app="app" ng-controller="DemoCtrl">
  <h2>Backand Simple Upload File</h2>
  <h4>Explore Backand File functioanlity by upload or delete a file</h4>
  <br/>
  <form role="form" name="uploadForm">
    <div class="row">
        <img ng-src="{{imageUrl}}" ng-if="imageUrl"/>
        <input id="fileInput" type="file" accept="*/*" ng-model="filename" />
        <input type="button" value="x" class="delete-file" title="Delete file" ng-disabled="!imageUrl" ng-click="deleteFile()" />
      <p ng-if="imageUrl">Image URL = {{imageUrl}}</p>
    </div>
  </form>
<br/>
   <p>
  To use this example with your app follow these steps
    <ol>
      <li>
        Set your app name and security token in the config:
        <pre>
myApp.config(function(BackandProvider) {
   // enter your app name here
   BackandProvider.setAppName('your app name here');
   // enter your app anonymous token here
   BackandProvider.setAnonymousToken('your app anonymous token here');
}
        </pre>
      </li>
      <li>
    Create a server side action in Backand<br>
    by going into the items object actions tab<br> 
    and clicking on the Back& Files icon.<br>
    Name your action "files"<br>
      </li>
  </ol>
  </p>
</body>
            
          
!
            
              .delete-file{
  color:red;
}
#fileInput{
  width: 220px;
}
img{
  max-width:250px;
}
            
          
!
            
              var myApp = angular.module('app', ['backand']);

// Backand security configuration for your app
myApp.config(function(BackandProvider) {
  // enter your app name here
  BackandProvider.setAppName('backandtodoapp');
  // enter your app anonymous token here
  BackandProvider.setAnonymousToken('6adbc622-36b5-496c-b288-19ea28816f10');
})

myApp.controller('DemoCtrl', ['$scope', 'Backand', DemoCtrl]);

function DemoCtrl($scope, Backand) {

  // Create a server side action in backand
  // Go to any object's actions tab 
  // and click on the Backand Storage icon.
  // Backand consts:
  var objectName = 'todo';
  var filesActionName = 'files';
  
  // Display the image after upload
  $scope.imageUrl = null;
  
  // Store the file name after upload to be used for delete
  $scope.filename = null;
    
  document.getElementById('fileInput').addEventListener("change", function () {
    var file    = document.querySelector('input[type=file]').files[0];
    var reader  = new FileReader();

    reader.addEventListener("load", function () {
      // console.log(file);
      // console.log(reader);
      Backand.file.upload(objectName, filesActionName, file.name, reader.result)
      .then(function (response) {
        $scope.imageUrl = response.data.url;
        $scope.filename = file.name;
      })
      .catch(function(err){
        alert(err);
      })
    }, false);

    if (file) {
      reader.readAsDataURL(file);
    }
  }, false);

  $scope.deleteFile = function(){
    if (!$scope.filename){
      alert('Please choose a file');
      return;
    }
    // By calling the files action with DELETE method in will perform 
    // a deletion of the file from Backand Storage
    return Backand.file.remove(objectName, filesActionName, $scope.filename).then(function(res){
      // Reset the form
      console.log(res);
      $scope.imageUrl = null;
      document.getElementById('fileInput').value = "";
    });
  }
  
  $scope.initCtrl = function() {
    initUpload();
  }
}
            
          
!
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