为什么我不能在Salesforce Visualforce中迭代包装类的列表？

Question

我正在尝试迭代包装器类中的记录列表，并在Visualforce页面上显示它们。自定义对象称为Campaign_Products__c，包装类的目的是显示用户是否选择了要添加到“购物车”的产品。

先端控制器代码(移除无关位)：

public with sharing class CONTROLLER_Store {
   ...
    public List<productOption> cpList           { get; set; }
    public class productOption {
        public Campaign_Product__c product;
        public Boolean inCart;
        public Integer quantity;
    }
   ...
    public CONTROLLER_Store(){
    ...
        List<Campaign> cmpList = getCampaignWithProducts(CampaignId,''); 
        // method above calls a campaign with a related list of Campaign Product records
        if(cmpList.size() > 0){
            cmp         = cmpList[0];
            cpList      = new List<productOption>();
            for(Campaign_Product__c pro : cmp.Campaign_Products__r){
                productOption option = new productOption();
                option.product  = pro;
                option.inCart   = false;
                option.quantity = 0;
                cpList.add(option);
            }
        } else {
            cmp         = new Campaign();
            CampaignId  = null;
            cpList      = new List<productOption>();
        }
    ....
    }

Visualforce页面(移除无关位)

<apex:page controller="CONTROLLER_Store" >
    <apex:repeat value="{! cpList }" var="option">
        {!option.product.Product__r.Name}    
        <apex:inputCheckbox value="{! option.inCart }"/>
    </apex:repeat>
</apex:page>

当我试图保存visualforce页面时，我得到了这个错误：

Unknown property 'CONTROLLER_Store.productOption.product'

Answer 1

您也需要使包装器中的属性对VF可见。有点像

public class productOption {
    public Campaign_Product__c product {get; private set};
    public Boolean inCart {get; set};
    public Integer quantity {get; set};
}

(假设产品应该在VF中只读)。您需要这些访问修饰符或完整的getter/setter方法。