自动插入主关系字段

Question

我有一个带有主关系字段的VF页面，我可以自动在此字段中插入值

<apex:inputField value="{!a.Parent__c}"/>

Answer 1

问题有点模糊，但如果要为Parent__c设置默认值，则只需在控制器类中应用该值即可。

实施例

public class VFController {
private Account controllerAccount;

//Basic Constructor
public VFController() {
    controllerAccount = new Account();
    controllerAccount.Parent__c = getDefaultParentAccount();    
}

//Standard Controller Constructor
public VFController(ApexPages.Controller standardController) {
    controllerAccount = (Account)standardController.getRecord();
    controllerAccount.Parent__c = getDefaultParentAccount();
}

private Id getDefaultParentAccount() {
    Id parentAccountId = null;

    //Lookup default parent Account
    List<Account> parentAccounts = [SELECT Id FROM Account WHERE /*Your Criteria here*/ LIMIT 1];
    if (parentAccounts.isEmpty() == false) {
        parentAccountId = parentAccounts[0].Id;
    }

    return parentAccountId;
}

}