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Dan_try_zero Hi
I have two objects A and B
B has MasterDetail relationship with A
how can I write a trigger to insert a record In object B on update of field in a record of object A, i need to make the sum of some fields in each object created in A
Thanks in advance
Just a hint. Hope this helps.
Try following code : This will function like roll up summary. Code demonstrates for one field.
trigger Update_Masterfield on DetailObject__c (after update,After insert){
set<ID> MasterObjectIdSet = New Set<ID>();
for(DetailObject__c detailList: trigger.new){
MasterObjectIdSet.add(detailList.MasterFieldInDetail__c);
}
Map<id,integer> sumMAp = New Map<id,integer>();
for(MasterObject__c mastList : [select id masterField__c,(select id detailField__c from childRelationshipname)from masterObject__c where id In: MasterObjectIdSet]){
Integer sum=0;
for(DetailObject__c detList:childrelationshipname){
sum = sum + detlist.DetailField__c;
}
sumMAp.put(masList.id,sum);
}
Set<masterObject__c> UpdateMasterSet =New Set<masterObject__c>();
for(masterObject__c maList:[select id,masterField__c from masterObject__c where id In:sumMAp.keySet()]){
maList.masterfield__c = SumMap.get(maList.id);
UpdateMasterSet.add(maList);
}
update UpdateMasterSet;
}
All Answers
if you are looking for updating detail objects field into master object then u have an option of using roll up summary field.
U need to create a field with data type roll up summary in master object wherein u will need to specify which field from detail should be summed up/averaged etc.
mark this as an answer if this works for you.
i know, but roll-up is limitated at 10 for objext, i need to do 20+ roll up in that case, for update all this fields, any suggestion for this question?
Just a hint. Hope this helps.
Try following code : This will function like roll up summary. Code demonstrates for one field.
trigger Update_Masterfield on DetailObject__c (after update,After insert){
set<ID> MasterObjectIdSet = New Set<ID>();
for(DetailObject__c detailList: trigger.new){
MasterObjectIdSet.add(detailList.MasterFieldInDetail__c);
}
Map<id,integer> sumMAp = New Map<id,integer>();
for(MasterObject__c mastList : [select id masterField__c,(select id detailField__c from childRelationshipname)from masterObject__c where id In: MasterObjectIdSet]){
Integer sum=0;
for(DetailObject__c detList:childrelationshipname){
sum = sum + detlist.DetailField__c;
}
sumMAp.put(masList.id,sum);
}
Set<masterObject__c> UpdateMasterSet =New Set<masterObject__c>();
for(masterObject__c maList:[select id,masterField__c from masterObject__c where id In:sumMAp.keySet()]){
maList.masterfield__c = SumMap.get(maList.id);
UpdateMasterSet.add(maList);
}
update UpdateMasterSet;
}
thanks i'll try it ;)