Apex Code Development You need to sign in to do that
Don't have an account?
CW5 Supposedly Simply Trigger to Update Set True Checkbox on Account if any Contact Has Checkbox True?
I'd like to write a simple trigger that updates a field on account called HPD if any of the contacts have a checkbox called HPD checked.
This is what I've come up with so far but it needs a little tweaking... Any thoughts?
------------------------------------------------------------------------
trigger UpdateAccountFromContacts on Account(before insert, before update) {
Set<Id> accountIds = new Set<Id>();
for (Account a : Trigger.new)
accountIds.add(a.Id);
Map<Id, Account> accounts = new Map<Id, Account>( [ Select a.Id, (Select HPD__c From Contacts) from Account a where HPD__c = True ] );
for (Account a : Trigger.new) {
Account accFromMap = accounts.get(a.Id);
if (accFromMap.Contacts.size() > 0) {
a.HPD__c = True;
}
} }
This is the final solution to Update Account based on Contacts, using a trigger...
trigger UpdateAccountFromContacts on Account(before update) {
//Creates variable accountIds
Set<Id> accountIds = new Set<Id>();
//Selects all of the accounts that were newly created/updated
for (Account a : Trigger.new)
//Assigns the newly created/updated account IDs to the variable
accountIds.add(a.Id);
//Creates a map of the Accounts that were newly created and selects contacts where checkbox is true
Map<Id, Account> accounts = new Map<Id, Account>( [ Select a.Id, (Select HPD__c From Contacts Where HPD__c = True) from Account a where a.ID in :accountIds] );
//Moves through the newly created/update accounts one by one
for (Account a : Trigger.new) {
//Gets the account and sets it to variable
Account accFromMap = accounts.get(a.Id);
//If the contact exists on the contact, set the value to TRUE, else FALSE
if (accFromMap.Contacts.size() > 0) {
a.HPD__c = true;
}
else {
a.HPD__c = false;
}
}
}
All Answers
Okay, I have it working nicely if the contact already exists at the company. I even have it looking for only the contacts that have the HPD checkbox set to true.
How do you handle EOF or null records being returned?
I receive an error whenever I create a new company, or try and update a company that doesn't have a contact with the HPD box checked.
Is there a IF (NO CONTACTS FOUND IN SELECT STATEMENT) then (END TRIGGER or DO NOTHING)??
Any ideas?
See working code below.
-------------------
trigger UpdateAccountFromContacts on Account(before insert, before update) {
Set<Id> accountIds = new Set<Id>();
for (Account a : Trigger.new)
accountIds.add(a.Id);
Map<Id, Account> accounts = new Map<Id, Account>( [ Select a.Id, (Select HPD__c From Contacts Where HPD__c = True) from Account a ] );
for (Account a : Trigger.new) {
Account accFromMap = accounts.get(a.Id);
if (accFromMap.Contacts.size() > 0) {
a.HPD__c = accFromMap.Contacts[0].HPD__c;
}
} }
regarding the error:
instead of
try
you cannot aplly the size() method to something that does not exist (is null).
Do you want the trigger to fire when an account is updated, or when a contact is inserted/updated? In the latter case, the trigger needs to be on contact instead of Account
This is the final solution to Update Account based on Contacts, using a trigger...
trigger UpdateAccountFromContacts on Account(before update) {
//Creates variable accountIds
Set<Id> accountIds = new Set<Id>();
//Selects all of the accounts that were newly created/updated
for (Account a : Trigger.new)
//Assigns the newly created/updated account IDs to the variable
accountIds.add(a.Id);
//Creates a map of the Accounts that were newly created and selects contacts where checkbox is true
Map<Id, Account> accounts = new Map<Id, Account>( [ Select a.Id, (Select HPD__c From Contacts Where HPD__c = True) from Account a where a.ID in :accountIds] );
//Moves through the newly created/update accounts one by one
for (Account a : Trigger.new) {
//Gets the account and sets it to variable
Account accFromMap = accounts.get(a.Id);
//If the contact exists on the contact, set the value to TRUE, else FALSE
if (accFromMap.Contacts.size() > 0) {
a.HPD__c = true;
}
else {
a.HPD__c = false;
}
}
}