在Lightning前端畫面中，有Map屬性，從Apex取值之後，即使返回的是Map，也不能直接賦值，要循環變換一下賦值。
如有理解錯誤，請賜教哈。
代碼如下：
Lightning前端：
<aura:component implements="flexipage:availableForAllPageTypes,force:appHostable" access="global">
<c:FieldLabelService aura:id="service" />
<aura:handler name="init" value="{!this}" action="{!c.doInit}" />
<aura:attribute name="accountFieldLabelMap" type="Map" />
Account:
<aura:iteration items="{!v.accountFieldLabelMap}" var="rec" indexVar="key">
<p>{!rec.key}:{!rec.value}</p>
</aura:iteration>
</aura:component>
Lightning前端Controller.js：
({
doInit : function(component, event, helper) {
const service = component.find('service');
let objectAPINameList = ['Account','Contact'];
let objectFieldAPINameMap = {'Account':['Name','Type']};
service.getFieldLabel(objectAPINameList,objectFieldAPINameMap,function(result){
console.log(JSON.stringify(result)); -->這句就是要測試一下能不能返回下面那個Apex返回的Map
//本來是想這一句應該就可以給前端Map變量賦值了，但是死活賦值不上
//component.set('v.contactFieldLabelMap',result['Account']);
//後來在這個上面看到，說不能直接搞，要轉換一下
var accountFieldLabelMap = [];
var retAccount = result['Account'];
for(var key in retAccount){
accountFieldLabelMap.push({value:retAccount[key], key:key});
}
component.set('v.accountFieldLabelMap',accountFieldLabelMap);
});
}
})
Apex後端：
這個有點兒複雜哈，代碼貼出來可能意義也不大。
大概就是返回一個這個的Map：
{
"Account": {
"Name": "Account Name",
"Type": "Account Type"
},
"Contact": {
"Id": "Contact ID",
"IsDeleted": "Deleted",
"MasterRecordId": "Master Record ID",
"AccountId": "Account ID",
"LastName": "Last Name",
"FirstName": "First Name",
"Salutation": "Salutation",
"Name": "Full Name",
"OtherStreet": "Other Street",
"OtherCity": "Other City",
"OtherState": "Other State/Province",
"OtherPostalCode": "Other Zip/Postal Code",
"OtherCountry": "Other Country",
"OtherLatitude": "Other Latitude",
"OtherLongitude": "Other Longitude",
"OtherGeocodeAccuracy": "Other Geocode Accuracy",
"OtherAddress": "Other Address",
"MailingStreet": "Mailing Street",
"MailingCity": "Mailing City",
"MailingState": "Mailing State/Province",
"MailingPostalCode": "Mailing Zip/Postal Code",
"MailingCountry": "Mailing Country",
"MailingLatitude": "Mailing Latitude",
"MailingLongitude": "Mailing Longitude",
"MailingGeocodeAccuracy": "Mailing Geocode Accuracy",
"MailingAddress": "Mailing Address",
"Phone": "Business Phone",
"Fax": "Business Fax",
"MobilePhone": "Mobile Phone",
"HomePhone": "Home Phone",
"OtherPhone": "Other Phone",
"AssistantPhone": "Asst. Phone",
"ReportsToId": "Reports To ID",
"Email": "Email",
"Title": "Title",
"Department": "Department",
"AssistantName": "Assistant's Name",
"LeadSource": "Lead Source",
"Birthdate": "Birthdate",
"Description": "Contact Description",
"OwnerId": "Owner ID",
"HasOptedOutOfEmail": "Email Opt Out",
"HasOptedOutOfFax": "Fax Opt Out",
"DoNotCall": "Do Not Call",
"CreatedDate": "Created Date",
"CreatedById": "Created By ID",
"LastModifiedDate": "Last Modified Date",
"LastModifiedById": "Last Modified By ID",
"SystemModstamp": "System Modstamp",
"LastActivityDate": "Last Activity",
"LastCURequestDate": "Last Stay-in-Touch Request Date",
"LastCUUpdateDate": "Last Stay-in-Touch Save Date",
"LastViewedDate": "Last Viewed Date",
"LastReferencedDate": "Last Referenced Date",
"EmailBouncedReason": "Email Bounced Reason",
"EmailBouncedDate": "Email Bounced Date",
"IsEmailBounced": "Is Email Bounced",
"PhotoUrl": "Photo URL",
"Jigsaw": "Data.com Key",
"JigsawContactId": "Jigsaw Contact ID",
"CleanStatus": "Clean Status",
"Level__c": "Level",
"Languages__c": "Languages",
"Location__Latitude__s": "Location (Latitude)",
"Location__Longitude__s": "Location (Longitude)",
"Location__c": "Location",
"Loan_Amount__c": "Loan Amount",
"Account_Number__c": "Account Number (取引先番號)",
"Days_Remaining__c": "Days Remaining",
"Stage__c": "Stage"
}
}
public with sharing class FieldLabelServiceController {
/*
* @param objApiNameList : object API name list. eg:['Account','Contact']
* @param objApiName2FieldsMap: object API name 2 fields map. eg:{'Account':['Name','Type'],'Contact':['LastName','Phone']}
* @return object API name 2 map of field API name -> label name. eg:{'Account':{'Type'：'類型'},'Contact':{'LastName':'姓'}}
*/
@AuraEnabled
public static Map<String,Map<String,String>> getFieldLabelService(List<String> objApiNameList,Map<String,List<String>> objApiName2FieldsMap){
//key:object API name, value:(Map--key:field API name,value:field label)
Map<String,Map<String,String>> object2FieldLabelMap = new Map<String,Map<String,String>>();
//get all sObject sObjectType map
Map<String,sObjectType> objName2ObjTypeMap = Schema.getGlobalDescribe();
for(String objApiName:objApiNameList){
//1.get specific object sObjctType
sObjectType objType = objName2ObjTypeMap.get(objApiName);
//2.get all of the fields map via specific object
Map<String,Schema.SObjectField> fieldsMap = objType.getDescribe().fields.getMap();
//3.check if retrieve specific field list or all the fields mapping via object
Set<String> retrieveFieldList = new Set<String>();
if(objApiName2FieldsMap !=null && objApiName2FieldsMap.containsKey(objApiName)){
retrieveFieldList = new Set<String>(objApiName2FieldsMap.get(objApiName));
}
Map<String,String> fieldApiName2FieldLabelMap = new Map<String,String>();
//4.get all/specific field api name -> label name mapping
for(String fieldApiName:fieldsMap.keySet()){
if(retrieveFieldList.size()>0 && !retrieveFieldList.contains(String.valueOf(fieldsMap.get(fieldApiName)))){
continue;
}
String label = fieldsMap.get(fieldApiName).getDescribe().getLabel();
fieldApiName2FieldLabelMap.put(String.valueOf(fieldsMap.get(fieldApiName)),label == null ? fieldApiName:label);
object2FieldLabelMap.put(objApiName,fieldApiName2FieldLabelMap);
}
}
return object2FieldLabelMap;
}
}