Question

我目前正在处理grails应用程序。我在控制器中有两个命令对象（AccountInfoCommand和EducInfoCommand）。在我的EducInfoCommand上，我想检查yearGraduated属性是否早于其验证者约束的set birthDate（AccountInfoCommand的属性）。我该怎么做？

这是我的AccountInfoCommand的代码：

class AccountDetailsCommand  implements java.io.Serializable {

    String username
    String password
    String confirmPassword
    String emailAddress
    Date birthDate        
}

这是我的EducInfoCommand代码：

class EducInfoCommand implements java.io.Serializable {

    Integer graduated 
    EducationLevel educationLevel   
    String schoolName 
    String yearGraduated
    String honorsReceived
}

static constraints = {

    yearGraduated nullable: false, maxSize:4, blank: false,  matches: /([0-9]*)/,
      validator: {
            Date.parse('yyyy',it) <= new Date() ? true : false
      }
}

请帮忙！谢谢！

Answer 1

您需要参考EducInfo所针对的AccountDetails。例如，如果您向EducInfoCommand添加了用户名字段，则可以从中查找帐户详细信息（假设有一个与命令对象类似的AccountDetails gorm对象）：

class EducInfoCommand implements java.io.Serializable { 
    String yearGraduated
    String username
    // ...
}

static constraints = {
    yearGraduated nullable: false, maxSize:4, blank: false,  matches: /([0-9]*)/,
      validator: { val, obj ->
            Date.parse('yyyy',val) > AccountDetails.findByUsername(obj.username).birthDate
      }
}

如何从另一个命令对象访问命令对象的属性？

1 个答案: