controller.js

$scope.schema = {
              "type": "object",
              "title": "Comment",
              "properties": {
                "picture": {
                  "title": "Picture",
                  "type" : "object"
                },
                "email": {
                  "title": "Email",
                  "type": "string",
                  "pattern": "^\\S+@\\S+$",
                  "description": "Email will be used for evil."
                },
                "comment": {
                  "title": "Comment",
                  "type": "string",
                  "maxLength": 20,
                  "validationMessage": "Don't be greedy!"
                }
              },
              "required": [
                "email",
                "comment"
              ]
            };

          $scope.form = [
                          {
                            "key" : "picture",
                            "type" : "dfFile"
                          },
                          "email",
                          {
                            "key": "comment",
                            "type": "textarea",
                            "placeholder": "Make a comment"
                          },
                          {
                            "type": "submit",
                            "style": "btn-info",
                            "title": "OK"
                          }
                        ];

          $scope.model = {};

          $scope.onSubmit = function(form) {
              // First we broadcast an event so all fields validate themselves
              $scope.$broadcast('schemaFormValidate');

              // Then we check if the form is valid
              if (form.$valid) {
                console.log('form is valid');
              } else {
                console.log('form is not valid');
              }
            }

dflowFile.html

<div class="form-group" ng-class="{'has-error': hasError()}">
    <label class="control-label" ng-show="showTitle()">{{form.title}}</label>

    <input ng-show="form.key"
           type="file"
           ng-file-select
           class="form-control"
           schema-validate="form"
           ng-model="$$value$$"/>

    <div class="help-block"
         ng-show="(hasError() && errorMessage(schemaError())) || form.description"
         ng-bind-html="(hasError() && errorMessage(schemaError())) || form.description"></div>
</div>

fileUpload.js

angular.module('dfApp').config(
['schemaFormProvider', 'schemaFormDecoratorsProvider', 'sfPathProvider',
    function(schemaFormProvider,  schemaFormDecoratorsProvider, sfPathProvider) {
        schemaFormDecoratorsProvider.addMapping(
          'bootstrapDecorator',
          'dfFile',
          'scripts/app/dynaforms/decorators/dfFile.html'
        );

        schemaFormDecoratorsProvider.createDirective(
            'dfFile',
            'scripts/app/dynaforms/decorators/dflowFile.html'
        );
    }
]);