Failed to get the object while loading a modal

I need to get the object that is sent to my controller in a modal.

When I click on the option to display the modal, I access a function from my controller:

  $scope.enable= function(user, callback) {
    //Verifico se o objeto está chegando no controller
    console.log(user);
    var modalInstance = $modal.open({
        templateUrl: 'app/views/liberacao.html',
        controller: 'UserController',
        size: 'sm',
        resolve: {
            user: function() {
                return user;
            }
        }
    });
    modalInstance.result.then(function(user) {
        if (callback) {
            callback(user);
        }
    });
};

I send the object to my controller, where I indicate the modal definitions and in the resolve parameter, I return the loaded object. However, when opening the modal the object is not loaded.

Modal html:

<div class="modal-content">
    <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
        Liberar {{user.name}} até
        <div class="input-group">
            <input type="text" class="form-control" datepicker-popup="dd/MM/yyyy" ng-model="user.extraDate" is-open="openedInicial" current-text="Hoje" clear-text="Limpar" close-text="Fechar" required />
            <div class="input-group-btn">
                <button type="button" class="btn btn-default" ng-click="openDatePicker($event)"><i class="glyphicon glyphicon-calendar"></i></button>
            </div>
        </div>

    </div>
    <div class="modal-body">
        <div class="btn-group-action">
            <button ng-click="" type="button" class="btn btn-success btn-lg btn-block btn-confirm-delete">Salvar</button>

        </div>
    </div>