Grails导航链接嵌套循环 [英] Grails navigation links nested loop

问题描述

我使用Grails标签创建了一个嵌套循环，但没有获得我期待的输出。我期待在另一组链接中嵌套的链接列表。我很接近，但嵌套链接显示为一个大列表，而不是多个链接。

我有两个具有一对多关系的域。我的控制器目前是动态的。

在Grails 2.3.3中写入

以下是我的两个域

  class委员会{
 
字符串委员名称
字符串描述
 
 static belongsTo = [医院：医院] 
 
静态约束= {
委员名称（可空：真）
描述（inList：[委员会，委员会））
 } 
} 
 
类医院{
字符串hospitalName 
 $ b $静态hasMany = [委员会：委员会] 
 
静态约束= {
 hospitalName nullable：true 
} 
} 
  

这里是在我的.GSP中的嵌套循环

 < g：each in =$ {hospitalInstanceList}status =ivar = hospitalInstance > 
< tr> 
< td> 
  < a href =index.jsp？nav = main& hosp =<％= hospGiven％>目标= _顶部 > 
< img src =/ Trustees / static / images / img / navigate.msh_board.gifborder =0> 
< / a> 
< / g：link> 
< / td> 
< / tr> 
< tr> 
< td> 
< ul> 
 < p>当前ID：$ {hospitalInstance.id}< / p> 
< li> 
 <％ -   < / li> 
< / g：每个> 
< / ul> 
< / td> 
< / tr> 
< / g：每个> 
  

解决方案

您需要使用 $ {hospitalInstance.committees} 在内部循环中。
试试这段代码

< table border =1>< g：each in =$ {hospitalInstanceList} status =ivar =hospitalInstance> < TR> < TD> < g：link action =showid =$ {hospitalInstance.id}> $ {hospitalInstance.hospitalName}< / g：link> < g：link action =showid =$ {hospitalInstance.id}> < a href =index.jsp？nav = main& hosp =<％= hospGiven％>目标= _顶部 > < img src =/ Trustees / static / images / img / navigate.msh_board.gifborder =0> < / A> < /克：链接> < / TD> < / TR> < TR> < TD> < UL> < g：每个in =$ {hospitalInstance.committees}> <李> < g：link action =showid =$ {it.id}> $ {it.committeeName}< / g：link> < /锂> <峰; br> <李> < g：link action =showid =$ {it.id}> $ {it.description}< /克：链接> < /锂> < /克：每个> < / UL> < / TD> < / TR>< /克：每个> < / table>

I have created a nested loop using Grails tags but not getting the output that I am expecting. I am expecting a list of links nested within another set of links. I am close but the nested links are being displayed as one big list, not multiple links.

I have two domains with a one-to-many relationship. My controller is currently dynamic.

writen in Grails 2.3.3

Here are my two domains

class Committees {

    String committeeName
    String description

    static belongsTo = [hospital:Hospital]

    static constraints = {
        committeeName (nullable:true)
        description( inList: ["Committee","Board"])
    }
}

class Hospital {
    String hospitalName

    static hasMany = [committees:Committees]

    static constraints = {
        hospitalName nullable:true
    }
}

Here is the nested loop in my .GSP

<g:each in="${hospitalInstanceList}" status="i" var="hospitalInstance">
<tr>
    <td>
        <g:link action="show" id="${hospitalInstance.id}">${fieldValue(bean: hospitalInstance, field: "hospitalName")}</g:link>
        <g:link action="show" id="${hospitalInstance.id}">
            <a href="index.jsp?nav=main&hosp=<%=hospGiven %>" target="_top">
                <img src="/Trustees/static/images/img/navigate.msh_board.gif" border="0">
            </a>
        </g:link>
    </td>
</tr>
<tr>
    <td>
        <ul>
            <g:each in="${hospitalInstance.id}" status="j" var="committeesInstance">
            <p>Current id: ${hospitalInstance.id }</p>
            <li>
<%--            <g:link action="show" id="${hospitalInstance}">${fieldValue(bean: hospitalInstance, field: "committees.committeeName")}</g:link>--%>
                <g:link controller="Committees" action="show" id="${committeesInstanceList}">${fieldValue(bean: committeesInstance, field: "committeeName")}</g:link>
            </li>
            </g:each>
        </ul>
    </td>
</tr>
</g:each>

解决方案

You need to use ${hospitalInstance.committees} in inner loop. Try this code

<table border="1">
<g:each in="${hospitalInstanceList}" status="i" var="hospitalInstance">
                      <tr>
			                      	<td>
			    
										<g:link action="show" id="${hospitalInstance.id}">${hospitalInstance.hospitalName}</g:link>

										<g:link action="show" id="${hospitalInstance.id}">
										<a href="index.jsp?nav=main&hosp=<%=hospGiven %>" target="_top">
										<img src="/Trustees/static/images/img/navigate.msh_board.gif" border="0">
										</a>
										</g:link>

			                      	</td>
                      </tr>    

					 <tr>					
						             <td>
						                        <ul>
										         <g:each in="${hospitalInstance.committees}">
				                                    <li>   <g:link action="show" id="${it.id}">  ${it.committeeName} </g:link> </li> 

				                                     <br> 
				                                    
				                                    <li>  <g:link action="show" id="${it.id}">  ${it.description}</g:link> </li>
				                                     
				                                     
				                                 </g:each>
                                               </ul>
						             </td>										
					 </tr>
</g:each>				
</table>

这篇关于Grails导航链接嵌套循环的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！