spring - Groovy/Grails验证和hasFieldErrors问题

Question

我创建了一个自定义标签，如下所示:

def textField = { attrs ->
    def field = attrs.name.split('\\.')[-1]
    log.error("--------- Field is ${field}")
    if (attrs.bean && attrs.bean.errors.hasFieldErrors(field)) {
        def className = attrs.remove('class')
        def classStr = 'errors '
        if (className) {
            classStr += className
        }
        attrs.put('class', classStr)
        attrs.put('value', attrs.bean[field])
        attrs.remove('bean')
    }
    out << g.textField(attrs)
}

我在GSP中这样称呼它:

<my:textField bean="${client}" name="client.firstName"/>
<my:textField bean="${client}" name="client.lastName"/>
...
<my:textField bean="${client}" name="client.workPhone"/>

这是我的域类

class Client {

    String email
    String address
    String city
    String state
    String zip
    String firstName
    String lastName
    String phone
    String workPhone
    String mobilePhone
    String birthCountry
    String citizenshipCountry
    String emergencyContactName
    String emergencyPhone
    String disabilities
    String experience

    static constraints = {
        email(email:true, unique:true, blank:false)
        address(blank:false)
        city(blank:false)
        state(blank:false)
        zip(blank:false)
        firstName(blank:false)
        lastName(blank:false)
        phone(blank:false)
        emergencyContactName(blank:false)
        emergencyPhone(blank:false)

        workPhone(blank:true, nullable:true)
        mobilePhone(blank:true, nullable:true)
        birthCountry(blank:true, nullable:true)
        citizenshipCountry(blank:true, nullable:true)
        disabilities(blank:true, nullable:true)
        experience(blank:true, nullable:true)
    }

    static mapping = {
        disabilities type: 'text'
        experience type: 'text'
    }

    static hasMany = [courses:ClientCourseMap]
}

该页面加载正常，除非我实际上有一个“客户端” bean。它一直加载到最后一个标签“client.workPhone”。然后我得到以下异常:

2010-03-06 18:32:35,329 [http-8080-2] ERROR view.GroovyPageView - Error processing GroovyPageView: Error executing tag : org.codehaus.groovy.grails.web.taglib.exceptions.GrailsTagException: Error executing tag : groovy.lang.MissingPropertyException: No such property: client for class: com.personal.Client at /Users/dean/Projects/PersonalGrails/grails-app/views/registration/index.gsp:98 at /Users/dean/Projects/PersonalGrails/grails-app/views/registration/index.gsp:145

问题是在bean上调用hasFieldErrors时。它传入应该是“workPhone”的“field”。单步调试器显示该字段完全是“workPhone”。但是，进一步检查该字段变量，它表明该字段的内部值为“client.workPhone”，offset = 7，count = 9，hash =0。但是，如果调用toString()，则会返回“如您所愿。

我想知道Grails是不是甚至Spring都没有正确使用此字符串？看起来它正在尝试使用该字符串的实际值，而不是注意该字符串的偏移量/计数并找回预期的值。

有人看到我做错了吗？还是您知道解决方法？我可以提供所需的任何信息，只需问...这真让我发疯!

Answer 1

看起来您标签的意图是减少呈现表单时所需的样板GSP代码量。您是否考虑过使用bean-fields插件？