delivery_service.js

    this.postNew = function (delivery, tender, success, error) {
        var deliveryCopy = angular.copy(delivery);
        delete deliveryCopy.state;
        
        var sendPickupRequest = deliveryCopy.sendPickupRequest;
        delete deliveryCopy.sendPickupRequest;

        ....
        $http.post('/deliveries.json', {
            delivery: deliveryCopy,
            'send_pickup_request': sendPickupRequest,
            'run_tender': tender,
            'commit': 'Save'
        }).success(success).error(error);
    };