salesforce零基础学习（八十七）Apex 中Picklist类型通过Control 字段值获取Dependent List 值

public without sharing class PicklistParserController {

    public Sobject sobj {get;set;}
    public String picklistFieldName {get;set;}
    public String dependentPicklistListFieldName { get; set; }
    public String picklistFieldValue { get; set; }

    public PicklistParserController() {
        Map<String, String> requestMap = ApexPages.currentPage().getParameters();
        String sobjId = requestMap.get('id');
        String recordTypeId = requestMap.get('recordTypeId');
        String sobjectTypeName = requestMap.get('sobjectType'); 
        this.pickListFieldName = requestMap.get('picklistFieldName'); 
        this.dependentPicklistListFieldName = requestMap.get('dependentPicklistListFieldName');
        this.picklistFieldValue = requestMap.get('picklistFieldValue');
        
        Schema.SobjectType sobjectType = null;
        
        if (sobjectTypeName != null && sobjectTypeName.trim().length() > 0) {
            sobjectType = Schema.getGlobalDescribe().get(sobjectTypeName);
            sobj = sobjectType.newSobject();
            sobj.put('RecordTypeId', recordTypeid);
            if(picklistFieldValue != null) {
                sobj.put(pickListFieldName,picklistFieldValue);
            }
        } else if (sobjId != null && sobjId.trim().length() > 0) {
            // find the so
            for (SobjectType sobjType : Schema.getGlobalDescribe().values()){
                String sobjPrefix = sobjType.getDescribe().getKeyPrefix();
                if (sobjPrefix == null) continue;
                if (sobjId.toLowerCase().startsWith(sobjPrefix.toLowerCase())) {
                    sobjectType = sobjType;
                    break;
                }
            }
            sobj = Database.query ('SELECT ' + pickListFieldName + ',' + dependentPicklistListFieldName +  ' FROM ' + sobjectType + ' WHERE ID =:sobjId');
        }
        System.debug(LoggingLevel.INFO, '*** sobj: ' + JSON.serialize(sobj));
    }
}

<apex:page controller="PicklistParserController"
    contentType="application/xml" showHeader="false" sidebar="false"
    standardStylesheets="false" language="en_US">
    <apex:form >
        <apex:inputField value="{!sobj[pickListFieldName]}" />
        <apex:inputField value="{!sobj[dependentPicklistListFieldName]}" id="dependentPicklistListFieldName" required="true"/>
    </apex:form>
</apex:page>

public with sharing class PicklistParserUtil {public static String parseOptions(Map<String, String> params) {
        Pagereference pr = Page.PicklistParser;
        // to handle development mode, if ON
        pr.getParameters().put('core.apexpages.devmode.url', '1');
        System.debug(LoggingLevel.INFO, '*** params: ' + JSON.serialize(params));
        for (String key : params.keySet()) {
            pr.getParameters().put(key, params.get(key));   
        }
        
        String xmlContent = pr.getContent().toString();
        return xmlContent;
    }

}

Map<string,String> m = new Map<string,String>();
m.put('sobjectType', 'Goods__c');
m.put('picklistFieldName','TestP1__c');
m.put('dependentPicklistListFieldName','TestP2__c');
m.put('picklistFieldValue', '测试1');
System.debug(LoggingLevel.INFO, '*** : ' + PicklistParserUtil.parseOptions(m));

<select  id="j_id0:j_id1:j_id2" name="j_id0:j_id1:j_id2">
<option value="">--None--</option>
<option value="T1" selected="selected">T1</option>
<option value="T2">T2</option>
<option value="T3">T3</option>
<option value="T4">T4</option>
<option value="测试1">测试1</option>
<option value="测试2">测试2</option>
</select>
<div class="requiredInput"><div class="requiredBlock"></div><span>
<select  id="j_id0:j_id1:dependentPicklistListFieldName" name="j_id0:j_id1:dependentPicklistListFieldName">
<option value="" selected="true">--None--</option>
</select></span></div><div id="j_id0:j_id1:j_id3">
<script>window.pl = window.pl &#124;&#124; {};
pl.map_00N0I00000JsNOk_01228000000U1u0={'T4':'DAAA','测试2':'IQAA','测试1':'ggAA','T1':'wAAA','T2':'MAAA','T3':'GAAA'};
pl.vals_00N0I00000JsNOk_01228000000U1u0=['TestS1','TestS1','TestS2','TestS2','TestS3','TestS3','TestS4','TestS4','TestS5','TestS5','TestS6','TestS6','测试S1','测试S1','测试S2','测试S2'];
pl.noneLabel="--None--";
pl.naLabel="\*\*Not Applicable\*\*";
pl.selectedLabel="Chosen";
pl.availableLabel="Available";
new picklist('j_id0:j_id1:dependentPicklistListFieldName','00N0I00000JsNOk_01228000000U1u0','00N0I00000JsNOk_01228000000U1u0','j_id0:j_id1:j_id2',['',''],' id=\"j_id0:j_id1:dependentPicklistListFieldName\" name=\"j_id0:j_id1:dependentPicklistListFieldName\"',false,true);
</script>
</div>

System.debug(LoggingLevel.INFO, '*** : ' + JSON.serialize(new PicklistFieldController().getDependentOptionsImpl('Goods__c','TestP1__c','TestP2__c')));