自定义对象的 Salesforce Apex 触发器

Question

我有一个名为“FinanceCapture”的自定义对象，它有一个帐户查找字段和一个名为 Contract_Term 的字段。 我正在尝试编写 Apex 触发器以使 Contract_Term 的值等于合同对象中的合同期限值。

起草以下代码，但它不起作用，需要您的帮助。谢谢

trigger populate_record on FinanceCapture__c (before insert) {
    List<Contract> ContractList = new List<Contract>();


    Map<Id,FinanceCapture__c> fin = new Map<Id,FinanceCapture__c>(
        [SELECT Id, FinanceCapture__lookup_Account__c FROM FinanceCapture__c WHERE Id IN :Trigger.New]);

    for (FinanceCapture__c a : Trigger.new){

//in Contract object, if its account ID matches with the account ID in FinanceCapture object, make the Contract_Term__c same as ContractTerm value

        If (ContractList.AccountId == fin.get(a.TMS_lookup_Account__c)){
            a.Contract_Term__c = ContractList.ContractTerm
        }
    }
}

Answer 1

有几件事，您的 contractList 对象似乎没有填充任何内容，它只是一个空列表，因此，ContractList.AccountId == fin.get(a.TMS_lookup_Account__c) 此处的“if”语句条件永远不会起作用，不仅因为它是一个空列表，但因为您正在尝试访问也不起作用的合同列表的 accountId。另一件事是，您使用 FinanceCapture__c 上的两个不同字段作为您的帐户查找字段，第一个是 SOQL 查询中的FinanceCapture__lookup_Account__c，第二个是TMS_lookup_Account__c，在使用 FinanceCaptures accountId 检查合同 accountid 时。您需要明确说明您正在尝试做什么，这似乎是......

1. 从 FinanceCapture__c 的 trigger.new 列表中获取 accountId 包含在 accountId 列表中的 Contract 记录列表记录。
2. 对于所有 FinanceCapture__c 记录，如果已找到给定帐户 ID 的合同，请将 contract_term__c 字段设置为相应的合同记录 contractTerm em> 字段

这是应该实现这一点的触发器（我使用 FinanceCapture__lookup_Account__c 作为查找字段名称）

trigger populate_record on FinanceCapture__c (before insert) {
    Map<Id, FinanceCapture__c> accountIds = new Map<Id, FinanceCapture__c>();

    for(FinanceCapture__c fin : trigger.new){
        accountIds.put(fin.FinanceCapture__lookup_Account__c, fin); //Add financeCapture Record to map with its accountId as the key
    }

    //Create a list of contracts with Id's in the set of id keys from account -> financeCapture map
    List<Contract> contractList = [SELECT id, contractTerm, accountId FROM Contract WHERE accountId IN :accountIds.keyset()];

    for(Contract contract : contractList){
        //Get the FinanceCapture record using the contracts accountId and
        //Set the Contract term fields to be equal
        accountIds.get(contract.AccountId).contract_Term__c = contract.ContractTerm;
    }
}