使用Playframework Scala @select模板 - onchange事件

问题描述

我用Scala使用playframework 2.0，并且我在使用@select模板时遇到了很多问题。
所以我有一个@select字段作为表单的一部分（表单在这里不应该很有趣）：

 <$ c 
表单（< select 1的变量>），
 options = options（<返回列表的函数的调用），
'_default  - >--- stupid select templates ---，
'_error  - > Form.globalError 
）
  

现在我有另一个选择。
这个重要的是 - 我想从一个函数中填充它，它获取第一个@select的实际值作为参数。

  
 默认适用于我的一个示例， 
  @select（editForm（owner.id），options（ （id） - >owner，'class  - >input-xlarge，'_label  - > Messages（owner），_default  - > Messages（make.choice） ，'showConstraints  - > true，'_help  - >）
  
但我不认为可以从服务器端模板获得 onchange 。你需要用javascript / jQuery来做到这一点。
 
I am using the playframework 2.0 with scala and I am facing many problem with the @select template.So what I have is a @select field as part of a Form (the Form shouldn't be interesting here):
@select(
Form("<variable of select 1>"),
options = options(<call of function which returns a list>),
'_default -> "--- stupid select templates ---",
'_error -> Form.globalError
)
now i have another select.Important about this one is - I want to fill it from a function, which gets the actual value of the first @select as parameter. 
 @select(
    Form("<other name of variable>"),
    options = options(<function(<variable of select 1>)>),
    '_default -> "--- stupid select templates ---",
    '_error -> Form.globalError
    )
So what i actually need is some kind of "onchange" envent for the @select fields.Another problem is, that the playframework can't read the "'_default" value of the @select (when I set a default value and try to use it in a Form, it gets counted as None)
NOTE: both @selects are on the same html site and both belong to the same form
Does someone know a workaround here? or possible examples?  
 解决方案 
One example where the default works for me, also if owner is filled the owner will be visible instead of default value.
@select(editForm("owner.id"),options(Task.owners), 'id -> "owner", 'class -> "input-xlarge", '_label -> Messages("owner"), '_default -> Messages("make.choice"), 'showConstraints -> true, '_help -> "")
But I do not think that onchange is possible from server side templates. You will need to do this with javascript / jQuery.
                        
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