Utility - Kumpulan fungsi yang mungkin berguna saat membuat apex class ataupun VF Page

Utility.cls

public class Utility {
    // public get picklist options in map (string, string)
    public static Map<String, String> getMapPicklist(String strObject, String strField) {
        Map<String, String> options = new Map<String, String>();
        
        Map<String,Schema.SObjectType> gd = Schema.getGlobalDescribe(); 
        Map<String, Schema.SObjectField> field_map = gd.get(strObject).getDescribe().fields.getMap();        
        List<Schema.PicklistEntry> picklistValues = field_map.get(strField).getDescribe().getPickListValues();       
        for (Schema.PicklistEntry pv : picklistValues) {
            // options.add(new SelectOption(pv.getValue(),pv.getLabel()));  
            options.put(pv.getValue(), pv.getLabel());
        }

        return options;
    }
    
    // public get picklist options
    public static List<SelectOption> getFieldOptions(String strObject, String strField, Boolean addBlank) {
        List<SelectOption> options = new List<SelectOption>();
        if (addBlank) {
            options.add(new SelectOption('', ''));
        }
        
        Map<String,Schema.SObjectType> gd = Schema.getGlobalDescribe(); 
        Map<String, Schema.SObjectField> field_map = gd.get(strObject).getDescribe().fields.getMap();        
        List<Schema.PicklistEntry> picklistValues = field_map.get(strField).getDescribe().getPickListValues();       
        for (Schema.PicklistEntry pv : picklistValues) {
            options.add(new SelectOption(pv.getValue(),pv.getLabel()));  
        }

        return options;
    }
    
    // function to get prefix of an object
    public static String getObjectPrefix(String strObjectName)
    {
        Map<String, Schema.SObjectType> m  = Schema.getGlobalDescribe() ;
        system.debug('==>m is==>'+m);
        Schema.SObjectType s = m.get(strObjectName) ;
        system.debug('==>Sobject Type is ==>'+s);
        Schema.DescribeSObjectResult r = s.getDescribe() ;
        String str = r.getKeyPrefix();
        return str;
    }
    
    // get record type id
    // Schema.SObjectType.Contact.getRecordTypeInfosByName().get('Client Contact').getRecordTypeId();

}