I have a function as below:

public PageReference resendEmails() {
  List<ts2__Placement__c> selectedPlacements = new List<ts2__Placement__c>();
  List<Timecards__c> timecards = new List<Timecards__c>();

  Set<Id> placementIds = new Set<Id>();

  Id templateId = [SELECT Id, Name FROM EmailTemplate WHERE DeveloperName = :template LIMIT 1].Id;
  List<Messaging.SingleEmailMessage> mailList = new List<Messaging.SingleEmailMessage>();

  for (pPlacement pPla : getPlacements()) {
    if (pPla.selected == true) {

  validate(selectedPlacements, startDate, endDate);

  if (errorList.isEmpty() && !selectedPlacements.isEmpty()) {
    Date start = Date.valueOf(startDate);
    Date finish = Date.valueOf(endDate);

    for (ts2__Placement__c pla : selectedPlacements) {

    for (Timecards__c t : [SELECT Id, Contractor__c, Contractor_First_Name__c, Week_start_date__c, Week_end_date__c, Candidate_Email__c, Client_Email__c FROM Timecards__c WHERE Placement__c IN :placementIds AND Week_start_date__c = :start AND Week_end_date__c = :finish]) {
      String[] toAddress = new List<String>();
      toAddress.add('t.' + toField);

      Messaging.SingleEmailMessage email = new Messaging.SingleEmailMessage();



    Messaging.SendEmailResult[] r = Messaging.sendEmail(mailList);


  return null;

It's pretty simple, alls it does is uses an e-mail tempate to send an e-mail out whenever resendEmails() is called.

What I want to do though is reuse this by dynamically choosing which field I use. Currently I have the following in the Visualforce Page with the relevant variable in the code:

<apex:commandButton value="Resend Email" action="{!resendEmails}" status="loading" reRender="response">
  <apex:param name="Template" value="Timecard_to_Candidate" assignTo="{!template}" />
  <apex:param name="Candidate" value="Candidate_Email__c" assignTo="{!toField}" />

This works as expected, setting template to the value Timecard_to_Candidate and toField to Candidate_Email__c and I know I can call these fields by using a String query:

String query = 'SELECT Id, Name, ' + toField + ' FROM Object__c';

The problem is within the for loop, specificically this line:

toAddress.add('t.' + toField);

How can I dynamically choose what field is added to the toAddress list? Putting in some kind of string as above doesn't work, the only way that does is toAddress.add(t.Candidate_Email__c);

Is there any way we can dynamically put in what field is choosen in a .add() method? Or would I have to use if statements in this case?

The idea behind this is that someone can choose what template, object, e-mail address etc... when calling this function.

1 Answer 1


you can use the SObject get method to get the field value by passing the field name.

you will end up something like this


this will get the value of the passed in field name and add the value to the toAddress list.

  • Thanks Vamsi, really appreciate that! I currently have a String field like: public String toField { get; set; }, but that's not compatible with the .get() method. How might I pass this in?
    – Dan Jones
    Mar 14, 2016 at 9:16
  • 1
    might be becos u hv to type cast the output to a string before adding it to the list. i hv updated the answer with casting. Mar 14, 2016 at 9:26

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