[英]Salesforce Trigger to populate a lookup field
I am trying to create salesforce trigger on Lead that auto-populates a look up field which links the current Lead to an existing Account if there exist an Account with the same name as the Lead's Company custom field. 我正在尝试在Lead上创建salesforce触发器,该触发器将自动填充一个查找字段,如果存在与Lead's Company自定义字段同名的客户,则该查询字段会将当前Lead链接到现有客户。
This is my code: 这是我的代码:
trigger Link_Lead_To_Account on Lead (before insert ) {
Set<String> whatIDs = new Set<String>();
MAP<id,String> accountMap= new MAP<id,String>();
// save the leads that have been triggered
for (Lead l : Trigger.new) {
whatIDs.add(l.id);
}
List<Lead> leads = [SELECT Id,Company FROM Lead where ID=:whatIDs ];
// loop through the triggered leads, if the account.name == to lead.company then link the found account to the lead
for (Integer i = 0; i <Trigger.new.size(); i++)
{
// System.Debug('++++++++++++++'+Trigger.new[i].company+Trigger.new[i].id);
if(accountMap.get(Trigger.new[i].company)!=null)
{
for(Account ac :[Select name,id from Account])
{
if(Trigger.new[i].Company==ac.Name)
{
Trigger.new[i].Account__c= ac.id;
break;
}
}
}
// System.Debug('Trigger.new[i].Account__c::::'+Trigger.new[i].Account__c);
// System.Debug('Trigger.new[i].company:::::'+Trigger.new[i].company);
// System.Debug('Trigger.new[i].ID:::::'+Trigger.new[i].ID);
}
update leads;
} }
But it doesn't work at all. 但这根本不起作用。 It throws the following error:
它引发以下错误:
Review all error messages below to correct your data.
Apex trigger Link_Lead_To_Account caused an unexpected exception, contact your administrator: Link_Lead_To_Account: execution of AfterInsert caused by: System.StringException: Invalid id: TestAccount2: External entry point
As it requires the Company field to be an ID, but when I write an ID it does't perform any changes. 因为它要求Company字段是一个ID,但是当我编写一个ID时,它不会执行任何更改。
I managed to fix it. 我设法解决了。 This is the working class where newLeads.Values() is being populated in the constructor with to the Trigger.new() values on the before insert event:
这是工作类,在构造器中将newLeads.Values()填充到before insert事件中的Trigger.new()值中:
public void LinkLeadToAccount() {
Set<String> companies = new Set<String>();
for (Lead l: newLeads.values()) {
if (l.Company != null) companies.add(l.Company);
}
if (companies.size() > 0) {
// Pick most recent Account where more than one with same name
Map<String, Id> accountNameToId = new Map<String, Id>();
for (Account a : [
select Name, Id
from Account
where Name in :companies
order by CreatedDate
]) {
accountNameToId.put(a.Name, a.Id);
}
if (accountNameToId.size() > 0) {
Lead[] updates = new Lead[] {};
for (Lead l: newLeads.values()) {
if (l.Company != null) {
Id accountId = accountNameToId.get(l.Company);
if (accountId != null) {
updates.add(new Lead(Id = l.Id, Account__c = accountId));
}
}
}
System.debug(' leads_to_update : ' + updates.size() + ' leads_to_update : ' + updates);
update updates;
}
}
} }
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