Question

我对Grails很新，所以请耐心等待。

我的观点有javascript代码喜欢这个：

//js code in my View
function validateEmailAndSetEmail(){
    var result =${remoteFunction(controller:'myController',action:'validateEmail',update:'responseDiv', params:'\'email=\'+document.getElementById(\'email\').value')};

    if (result) { //doSomething}
}

我的控制器看起来像：

def validateEmail = {
    def emailToValidate = request.getParameter("email")
    def matchingEmailFound = myService.checkEmailAddress(emailToValidate)

    if (matchingEmailFound){
        render "This email is already in use.<br>If you have already created an account with this email, please try to reset the password from Login page."}
    else{
        //setEmail to send here
        render "This email is not in use. This email will be used as your account email"}

    return !matchingEmailFound

我的问题分为两部分：

当我从firebug中检查我的js代码中 result 的值时，它是不是布尔类型（true / false）并且值似乎不正确，是否有任何方法可以传递此值从控制器到视图中的js正确吗？
我是否可以将设置的电子邮件值调用到某个变量中控制器并在我看来在js之外调用？

提前致谢。

Answer 1

记住Ajax是异步的 - 只要发送了远程调用，就会执行if(result)，而不是在完成后。{/ p>

更好的方法是更改控制器操作以返回一些JSON数据：

def model = [matchFound:matchingEmailFound]
if(matchingEmailFound) {
  model.message = "This email is already in use.<br>If you have already created an account with this email, please try to reset the password from Login page."
} else {
  model.message = "This email is not in use. This email will be used as your account email"
}
render (model as JSON)

然后在客户端使用onSuccess函数而不是更新。

${remoteFunction(controller:'myController',action:'validateEmail',
   params:'\'email=\'+document.getElementById(\'email\').value', onSuccess:'checkEmail(e)')};

并定义

function checkEmail(response) {
  var r = JSON.parse(response.text);
  $('responseDiv').innerHTML = r.message;
  if(r.matchFound) {
    // do stuff
  }
}

我不是JavaScript专家，但你明白了。

Grails从视图访问控制器值

1 个答案: