小编div*_*ero的帖子

尝试将我的 Rails 应用程序作为 Docker 容器运行，但在打开页面时出现以下错误：

Webpacker can't find application in /app/public/packs/manifest.json. Possible causes:
1. You want to set webpacker.yml value of compile to true for your environment
   unless you are using the `webpack -w` or the webpack-dev-server.
2. webpack has not yet re-run to reflect updates.
3. You have misconfigured Webpacker's config/webpacker.yml file.
4. Your webpack configuration is not creating a manifest.
Your manifest contains:
{
}

当我简单地运行应用程序时，rails s它工作正常，并创建了public/packs文件夹。在日志中还有

/usr/local/bundle/gems/webpacker-4.2.0/lib/webpacker/runner.rb:13:in ``': No such file or directory …

我正在用rspec编写控制器测试,在完成操作后,我的工作应该发送给管理员用户的电子邮件.但我想为我的测试禁用这项工作或以某种方式嘲笑它.我怎样才能做到这一点？

我正在使用delayed_job_active_record+ daemons宝石.

class AdminNotificationJob < ActiveJob::Base
  queue_as :default

  def perform(method, parameter)
    User.admin.includes(:profile).each do |admin|
      AdminMailer.send(method, admin, parameter).deliver_later
    end
  end
end

我正在尝试在DepartmentService中注入DepartmentDAO.这是在我添加@Transactional注释后出现的.所以这是我的DepartmentService:

@Service
@Transactional
public class DepartmentService extends AbstractCRUDService<DepartmentDTO> {

    private DepartmentDAO departmentDAO;

    public DepartmentService() {
        super();
        this.departmentDAO = null;
    }

    @Inject
    public DepartmentService(DepartmentDAO departmentDAO) {
        super();
        this.departmentDAO = departmentDAO;
    }

    @Override   
    public Long create(DepartmentDTO dDTO) {        
        Department department = new Department();
        department.setDepName(dDTO.getDepName());
        return departmentDAO.create(department);
    }
...............read,update,delete,findAll methods...........................
}

这是我的部门DAO:

@Repository
@Transactional(propagation = Propagation.MANDATORY)
public class DepartmentDAO extends AbstractCRUDDao<Department> {

    private final Logger logger = LoggerFactory.getLogger(DepartmentDAO.class);
    protected Class<DepartmentDAO> clazz;

    public DepartmentDAO() {    

    }

    @Override   
    public Long create(Department d) {
    entityManager.persist(d);
    return …

查看 RoR 动作电缆指南http://edgeguides.rubyonrails.org/action_cable_overview.html#subscription-adapter，没有找到有关动作电缆适配器的太多信息。

development:
  adapter: async

test:
  adapter: async

production:
  adapter: redis
  url: redis://10.10.3.153:6381

你能解释一下什么是异步适配器，为什么我在生产中需要redis作为适配器？

有时，当我调试路由时，在交换中看到异常，其他时候异常转到CamelExceptionCaught属性。它们之间有什么区别？