Grails通过groovy子句中的id获取字段值

Question

I'm trying to set autofill in a form in that whenever the id field changes in the form, several other fields would autofill. I am using jQuery for the on change event.

This is the id field:

<g:field id="id" name="id" value="${this.myContoller?.id}"/>

And this is my jQuery function:

$(document).ready(function(){
        $("#id").change(function(){
            $("#otherField").change("${info.getOtherField('#id')}")
        });
     });

Info is a taglib that I am using to pull the info I need for that field. I cannot figure out how to pull the data from the field into the groovy code inside of the jquery statement. I am using Grails 3.

Answer 1

Like Joshua Moore said you can't callout to the server side without as ajax call. Here's one way of doing that:

$(document).ready(function(){
  $("#id").change(function(){
    $.ajax({
        url: "${createLink(controller: 'myController', action: 'getTheOtherFieldValue')}",
        data: {
          'id' : $(this).val()
        },
        success: function(data, textStatus) {
          $("#otherField").change(data.theOtherFieldValue)    
        }
    });


  });
});

And your controller can look like,

MyController {
...
  def getTheOtherFieldValue(String id ) {
    render(contentType: 'text/json') {
      theOtherFieldValue = getOtherField(id)
    }
  }
...
}

Basically, your trigger makes an ajax call to the server with the #id values, waits till it returns and then updates #otherField with the returned value(s)