I have 2 custom objects with master-detail relationship:


I have an after update trigger on the Custom_Object__1(parent) and also I have the if condition where the fields are set as criteria based on which the trigger.new is fired now I need to need to include the record type of the child object also on the filter type any approach on how to do this?

  • Are you trying to filter parent records based on record type of child records?. There can be multiple child records with different record types under one parent record right?
    – Victor
    Jun 8, 2015 at 18:33
  • 1
    You will have to query the child objects including their RecordTypeId field for the set of objects in the trigger. And as @Victor mentions you need to consider how multiple record types for the child objects should affect the logic unless you have already constrained that in some way.
    – Keith C
    Jun 8, 2015 at 18:35
  • In this case we have only 1 child all the time Jun 8, 2015 at 18:43

1 Answer 1


Code of this sort will allow you to use the developer name of the record type in your logic:

trigger MyTrigger on custom_object__1 (after update) {

    // Map is custom_object__1 to developer name of custom_object__2 record type
    Map<Id, String> m = new Map<Id, String>();
    for (custom_object__2 c2 : [
            select custom_object__1, RecordType.DeveloperName
            from custom_object__2
            where custom_object__1 in :Trigger.newMap.keySet()
            ]) {
        m.put(c2.custom_object__1, c2.RecordType.DeveloperName);

    for (custom_object__1 c1 : Trigger.new) {
        String developerName = m.get(c1.Id);
        if (developerName == 'xyz') {

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