Grails：如何将域对象的错误与命令对象的错误？ [英] Grails: How to combine domain objects' errors with command objects' errors?

问题描述

假设我有User domain类和RegistrationCommand类。因此，当用户在网站上注册时，有两个数据验证步骤：

Suppose I have User domain class and RegistrationCommand class. So when user is registering on website there are two steps for data validation:

1. RegistrationCommand约束验证。


2. 用户域对象约束验证。

控制器操作接收命令对象，并在计算后将其传递给模型中的视图。所以，我想加入域对象的验证错误与命令对象的错误，并将它们作为命令对象的一部分。

Controller action receive command object and pass it to view in a model after computing. So, I want to join domain objects' validation errors with command objects' errors and pass them as a part of command object. What is the best way to do that?

推荐答案

我认为完全的答案是：

if (!user.validate() || !user.save(true))
{
    if (user.errors.hasErrors())
    {
        user.errors.allErrors.each {FieldError error ->
            final String field = error.field?.replace('profile.', '')
            final String code = "registrationCommand.$field.$error.code"
            command.errors.rejectValue(field, code)
        }
    }
    chain(action: 'registration', model: [command: command])
    return
}

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