Prevent ngResource from requiring a returned item on $save

Question

It seems that when I $save or use a custom $update (put or post) method on my resource that it expects the newly posted document to be returned. I don't want to return anything from my save/post ops but an ok/200/error type of statement but doing so causes the item to be blank as soon as saved.

var item = Things.get({
 id: $route.current.params.id
}, function() {
 console.log(item);  // Item is ok
}); 

var item = Things.get({
 id: $route.current.params.id
}, function() {
 console.log(item);  // Item is blank (because server returned just 'ok')
 item.$save();
}); 

Answer 1

When you do a $save() there will be a validation to check if there is any data returned and if thats the case, the response will be copied to the original object (in your case item)

This is the callback when receiving a response from server:

var promise = $http(httpConfig).then(function(response) {
  var data = response.data,
      promise = value.$promise;

  if (data) {
    // Need to convert action.isArray to boolean in case it is undefined
    // jshint -W018
    if (angular.isArray(data) !== (!!action.isArray)) {
      throw $resourceMinErr('badcfg', 'Error in resource configuration. Expected ' +
        'response to contain an {0} but got an {1}',
        action.isArray?'array':'object', angular.isArray(data)?'array':'object');
    }
    // jshint +W018
    if (action.isArray) {
      value.length = 0;
      forEach(data, function(item) {
        value.push(new Resource(item));
      });
    } else {
      shallowClearAndCopy(data, value);
      value.$promise = promise;
    }
  }

  value.$resolved = true;

  response.resource = value;

  return response;
}, function(response) {
  value.$resolved = true;

  (error||noop)(response);

  return $q.reject(response);
});

You can check full source code here

So if you don't want to have your object overwritten, then just don't send any data on the response from server.

Answer 2

If your server returns a 204 (no-content), it won't replace the resource once the save is complete.