After insert trigger on Attachment object doesnt fire

Question

Was anyone successful in getting their after insert trigger on Attachment working? I don't see any debug logs for the trigger when I try to invoke from the UI

Updating post to add my code:

trigger AttachmentTrigger on Attachment (after insert) {
   Map<id,List<Attachment>> taskAttachmentMap = new Map<id,List<Attachment>>();
    for(Attachment attachment: [SELECT Body,BodyLength,ContentType,Description,Id,IsPrivate,Name,ParentId FROM Attachment where Id IN :Trigger.new]){           
        String text= String.valueof(attachment.ParentId);
        if(text.startswith('00T')){
            List<Attachment> la = new List<Attachment>();
            if(taskAttachmentMap.get(attachment.parentId)==null){
                la.add(attachment);
            }else{
                la = taskAttachmentMap.get(attachment.parentId);
                la.add(attachment);
            }
            taskAttachmentMap.put(attachment.parentId, la);                     
        }

    }

    List<Attachment> attachmentsToInsertonOpp = new List<Attachment>();
    //Find all tasks that are associated to opportunities
    if(taskAttachmentMap!=null){
        for(Task t: [select id, whatid from Task where id IN :taskAttachmentMap.keyset()]){
                String text1 = String.valueof(t.whatid);
                if(text1.startswith('006')){
                    for(Attachment att:taskAttachmentMap.get(t.id) ){
                        att.parentid=t.whatid;
                        attachmentsToInsertonOpp.add(att);                        
                    }
                }
        }           

    }

    //Now insert attachments
    if(attachmentsToInsertonOpp.size()!=0){
        insert attachmentsToInsertonOpp;
    }


}

Answer 1

Salesforce provides an example of an after insert trigger in the following link http://help.salesforce.com/HTViewSolution?id=000181538 . Here is the answer they provide.

A trigger can be written on Attachment using Force.com IDE or ANT.

A sample code would be:

trigger SetTitleToAttachment on Attachment (after insert) {

String Title;
Id pId;

for(Attachment att: Trigger.new){
Title=att.Name;
pId=att.ParentId;
}

List<Case> c=[select Id , Title__c from Case where Id=:pId];

//assuming one record is fetched.
c[0].Title__c=Title;

update c[0];

}

Note: There is no way to write a trigger using the Salesforce.com UI (Portal).