grails g：选择标签 [英] grails g:select tag

问题描述

 < td>< g：select name =newCity 
 id =$ {'newCity_'+ cityData.uid}
 from =$ {cityData.name}
 value =$ {cityData.someValue}
 noSelection =$ {['null'：'选择城市...']}class =newCity/> 
< / td> 
  

呈现以下HTML：

 < TD> 
< select name =newCityid =newCity_abcclass =newCity> 
< option value =null>选择城市...< / option> 
< option value =A> A< / option> 
< option value =B> B< / option> 
< option value =C> C-< / option> 
< option value =D> D< / option> 
< / select> 
< / td> 
  

但是，我希望我的HTML看起来像这样;插入类，因为我正在做一些JavaScript验证：

 < td> 
< select name =newCityid =newCity_abcclass =newCity> 
< option value =null>选择城市...< / option> 
< option value =Aclass =populated> A< / option> 
< option value =Bclass =notpopulated> B< / option> 
< option value =Cclass =populated> C< / option> 
< option value =Dclass =notpopulated> D< / option> 
< / select> 
< / td> 
  

这可能吗？

需要创建一个自定义标签库来实现这个目标？

任何帮助将不胜感激，谢谢！

解决方案

相信这是可能的。 选择标签实施（写出< option> tags ）调用私有方法 writeValueAndCheckIfSelected 来填写选项，并且不知道任何类名。

有一个2岁的 Grails JIRA上的新功能请求，但我认为你可能被卡住了自己的标签来为你的sp做这个特别的情况。

I am using a g:select tag like this:

<td><g:select name="newCity"
        id="${'newCity_' +cityData.uid}"
        from="${cityData.name}"
        value="${cityData.someValue}"
        noSelection="${['null':'Select City...']}" class="newCity" />
</td>

which renders the following HTML:

<td>
<select name="newCity" id="newCity_abc" class="newCity" >
<option value="null">Select City...</option>
<option value="A" >A</option>
<option value="B" >B</option>
<option value="C" >C-</option>
<option value="D" >D</option>
</select>
</td> 

However, I want my HTML to look like this; with class inserted since I am doing some javascript validation:

<td>
<select name="newCity" id="newCity_abc" class="newCity" >
<option value="null">Select City...</option>
<option value="A" class="populated" >A</option>
<option value="B" class="notpopulated" >B</option>
<option value="C" class="populated" >C</option>
<option value="D" class="notpopulated" >D</option>
</select>
</td>

Is this possible?

Do I need to create a custom tag library to acheive this?

Any help will be appreciated, Thanks!

解决方案

I don't believe this is possible. The select tag implementation (which writes out the <option> tags) calls the private method writeValueAndCheckIfSelected to fill in the option, and this is not aware of any class names.

There is a 2 year old New Feature Request on the Grails JIRA, but I think you may be stuck rolling your own tag to do this for your specific situation.

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