Question

采取标准注册流程：

用户注册
向用户发送带有链接激活帐户的电子邮件
用户激活帐户

当我们创建初始帐户时，我们会存储用户名，密码，电子邮件，激活密钥
当用户点击激活密钥链接时，我们使用readmodel验证密钥
然后我们触发传递用户名

如何加载用户帐户以在域中激活它？

最初我想将新用户Acount.Id传递给readmodel，但是在CommandExecutorBase中没有访问权限（我知道） - 我们不保存：

protected override void ExecuteInContext(IUnitOfWorkContext context,
       CreateAccountViaFormRegistrationCommand command)
{
    var newKey = Guid.NewGuid().ToString();
    var newAccount = new Account(
            command.UserName, command.Email, command.Password, newKey);
    SendWelcomeEmail(command.Email, command.UserName, newKey);
    context.Accept();
}

Answer 1

您可以发布AccountActivationKeySent事件，然后可以处理该事件以填充您在阅读方面需要的任何投影。有点像：

// 1. Create and send the command from your client:

var command = new CreateAccountViaFormRegistrationCommand {
    AccountId = Guid.NewGuid(),
    ...
}

// 2. Create a new account in your command handler

var newAccount = new Account(command.AccountId, ...);
context.Accept();

// 3. And your account constructor (assuming it's inheriting from one
//    of EventSource's subclasses, e.g. AggregateRootMappedByConvention) 
//    might look like this:

public Account(Guid accountId, string name, ...) {
  EventSourceId = accountId;
  ApplyEvent(new AccountCreated { AccountId = Id, ... } );
  ApplyEvent(new AccountActivationSent { AccountId = Id, ... })
}

NCQRS：你如何从域加载？

1 个答案: