2019-10-31 关于Field那些事

无时无刻不处在一个于Fields打交道的时候。

1. 获取FiledMap

   public static Map<string,string> fetchFieldMap(string objName) {
       Map <String, Schema.SObjectType> schemaMap = Schema.getGlobalDescribe();
       Map <String, Schema.SObjectField> fieldMap = schemaMap.get(objName).getDescribe().fields.getMap();
       Map<String,string> labelFieldMap = new Map<string,string>();
       for (String fieldName: fieldMap.keySet()) {       
           labelFieldMap.put(fieldMap.get(fieldName).getDescribe().getLabel(),fieldMap.get(fieldName).getDescribe().getName()); 
        }
       return labelFieldMap;  
   }

结果如下：

{AUM=FinServ__AUM__c, Account Description=Description, Account Fax=Fax, Account Health=PwC_Account_Health__c, Account ID=Id, Account Name=Name, Account Number=AccountNumber, Account Phone=Phone, Account Quality=PwC_Account_Quality__c, Account Rating=Rating, ...}

2. 获取Field Set
   Field set是一组field的集合。当一个 field set加入VF page的时候，开发可以循环遍历渲染它。当这个页面加到了managed package,系统管理员可以添加，移除和重新排列这些字段用来在页面展示。

 List<Schema.FieldSetMember> FieldSetMemberList = SObjectType.Account.FieldSets.PwC_Account_Score_Rule_Field_Set.getFields();
        String selects = '';
        for(Schema.FieldSetMember f : FieldSetMemberList) 
        {
            selects += f.getFieldPath() + ', ';
        }

结果是：

Account_Score__c, 
Completed_Tasks_In_Last_60_Days__c, 
NumberOfEmployees, 
Task_Count_Total__c,
AnnualRevenue, 
Score_Rule__c, 
Closed_Won_Opps_In_Last_6_Months__c,