我有一个 visualforce 页面,其中有一个名为 Topic 的选项列表,有时我需要在页面加载时选择其中一个选项列表选项(这意味着主题将从另一个页面传递,并且需要在第一次加载页面时选择时间)。我不知道该怎么做?我正在发布处理主题选择的 Visualforce 页面的一部分以及下面的控制器代码。任何帮助将不胜感激。谢谢。
视觉力量页面:
<!---------------------------------- Select Topic ----------------------------------------------------->
<apex:pageblockSection title="Select the Topic" >
<apex:selectList value="{!topic}" size="1">
<apex:outputlabel for="Topic" value="Pick a Topic :" ></apex:outputlabel>
<apex:selectOptions id="topic" value="{!Topics}"/>
<apex:actionSupport action="{!populateParameters}" reRender="parametersSection,querySection" event="onchange"/>
</apex:selectList>
</apex:pageblockSection>
<!---------------------------------- End of Select Topic ---------------------------->
<!---------------------------------- Parameters for Topic ----------------------------------------------------->
<apex:pageblockSection id="parametersSection" title="Input Parameters">
<apex:repeat value="{!topicpParamWrapperList}" var="params">
<apex:outputPanel >
<apex:outputlabel value="{!params.parameter.Name}" ></apex:outputlabel>
<apex:inputfield value="{!params.parameter.inputValue__c}" rendered="{!params.renderAsText}">
<apex:actionsupport action="{!placeValuesInQuery}" reRender="querySection,splunUrlLink" event="onchange"/>
</apex:inputfield>
<apex:inputfield value="{!params.parameter.DateTimeValueHolder__c}" rendered="{!params.renderAsDate}">
<apex:actionsupport action="{!placeValuesInQuery}" reRender="querySection,splunUrlLink" event="onchange"/>
</apex:inputfield>
</apex:outputPanel>
</apex:repeat>
</apex:pageblockSection>
<!---------------------------------- End of Parameters for Topic ----------------------------------------------------->
顶点控制器
public List < topicpParamWrapper > topicpParamWrapperList {
get;
set;
} {
topicpParamWrapperList = new List < topicpParamWrapper >();
}
public void populateParameters()
{
if(!topicpParamWrapperList.isEmpty())
{
topicpParamWrapperList.clear();
}
if(topic!='' && topic!=Null)
{
for(Query_Parameter__c qParam :[select id, Parameters__r.Variable_Name__c, Parameters__r.Type__c,Parameters__r.Name from Query_Parameter__c where Topics__c=:topic])
{
Parameters__c param = new Parameters__c();
param.Name =qParam.Parameters__r.Name ;
param.type__c = qParam.Parameters__r.type__c;
param.Variable_Name__c=qParam.Parameters__r.Variable_Name__c;
topicpParamWrapperList.add(new topicpParamWrapper(param));
}
getQueryToRun();
}
}
public void getqueryToRun(){
if(mapTopics.containsKey(topic))
{
this.queryToRun =mapTopics.get(topic).query__c;
this.queryMain=mapTopics.get(topic).query__c;
}
}
public List < topicpParamWrapper > paramList {
get;
set;
} {
paramList = new List <topicpParamWrapper>();
}