In apex, what is a proper way to write && condition?

 trigger CreatePTOEvent on Thrive_HR_PTO_Request__c (after insert) {
// Event is created when PTO Request record is created
List<Event> ptoevents = new List<Event>();
List<Thrive_HR_PTO_Request__c> ptorequest = Trigger.new;

for(Thrive_HR_PTO_Request__c ptr : ptorequest) {

    datetime StartDate = ptr.Start_Date__c;
    datetime EndDate = ptr.End_Date__c;
    date StartDateOnly = StartDate.date(); 
    date EndDateOnly = EndDate.date();

    Integer daysDifference = StartDateOnly.daysBetween(EndDateOnly);

    if(daysDifference < 14 && ptr.All_Day_Event__c = true) {
        Event evt = new Event(
            Subject='Sicktastic' + ' on ' + ptr.Start_Date__c.date() + ' to ' + ptr.End_Date__c.date(),
            IsAllDayEvent = ptr.All_Day_Event__c

        // add events to record

    else if (daysDifference >= 14) {
        ptr.End_Date__c.addError('You can not exceed more than 14 days');
     insert ptoevents;

Basically, I want to check if(daysDifference < 14 && ptr.All_Day_Event__c = true) these two conditions to trigger something.

  • That's exactly how to write logical AND, there is no other way, you're on the right track. Do you have any problems with the current code or you're just making sure? – Boris Bachovski Sep 11 '14 at 6:27
  • Well, apparently I am getting an error in my developer console "Expression cannot be assigned". – Anthony Gawon Lee Sep 11 '14 at 6:30
  • 1
    Thats because of you are having single =` mark here in ptr.All_Day_Event__c = true. You no need of having it if the field is a boolean – highfive Sep 11 '14 at 6:34

You have an error with ptr.All_Day_Event__c = true. Instead of comparing using == you're assigning a value to your variable using =. The logical operator && is fine. This is very common problem and it happens quite often.


It's the same as in any other language. What you have in your code is ok if you can improve a little.

if(daysDifference < 14 && ptr.All_Day_Event__c)

You no need of having prt.All_Day_Event__c == true if All_Day_Event__c is a Boolean field. Your if block will execute if both the conditions return true

  • Thanks highfive! I can't believe I didn't catch that. – Anthony Gawon Lee Sep 11 '14 at 6:34
  • It's ok if you are checking with the == as well in case of field is having null values – highfive Sep 11 '14 at 6:36

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