formly-js/angular-formly

Hi All! I'm using formly to display data retrieved via $http from Java backend containing an unix timestamp (milliseconds). I wrote a method, which translated the timestamp with moment.js into a JS Date object, added an additional field (for display purposes) on the object and provided it to formly. On submit, another method updates the unix timestamp from the formly input and transmittes the data back to the backend. But the backend does not accept an additional field. So, I tried to implement this kind of translations with formly-fieldconfig-controller and templateOptions.onBlur. The controller triggers on load and updates the model value perfectly, but the onBlur event has only access to field and scope without the model. So submitting the formly input only contains the JS Date Object. Could you give me any suggestions please?
```
'templateOptions': {
'onBlur': function(field, $scope) {
var newValue = (function dateConversion(oldValue) { return parseInt(moment(oldValue).format('x'), 10); })($scope.value);
// Change in model
$scope.value = newValue;
$scope.formControl.$modelValue = newValue;
}
},
controller: function ($scope) { // code from formly gitter chat
var newValue = (function dateConversion(oldValue) {
return moment(oldValue).toDate();
})($scope.model[$scope.options.key]);
// Change in model
$scope.model[$scope.options.key] = newValue;
// Change original value as well (keep in $pristine)
$scope.options.value = newValue;
}
´´´