Hyperledger Fabric Composer 事务不起作用

Question

我正在尝试添加这个名为 placeOrder 的事务我想添加一个 Customer 参与者 在创建Order 资产之前，并在处理此交易时映射其与Order 资产的关系。但是我得到了客户未定义的错误。有人可以帮忙吗？谢谢。

我的模型

namespace org.isn.customer

participant Customer identified by email {
 o String firstName
 o String lastName
 o String email
 o String password
}

enum Status{
    o ACTIVE
    o OFF_THE_ROAD  
}

asset Vehicle identified by serial {
 o String brand
 o String model
 o String color
 o Status status
 o Double price
 o String serial
}
asset Order identified by orderId{
 o String orderId
 o Vehicle item
 --> Customer customer
}

transaction PlaceOrder {
    o String orderId
    --> Vehicle item
    o Customer customer
}

script.js

/**
 * @param {org.isn.shop.PlaceOrder}orderRequest  
 * @transaction
 */

async function placeOrder(orderRequest){

    const factory = getFactory(); 
    const customerRegistry = await getParticipantRegistry("org.isn.customer.Customer");
    const customerExists = await customerRegistry.exists(orderRequest.customer.email);

    if(!customerExists){ 
        const customer = factory.newResource("org.isn.customer","Customer",orderRequest.customer.email);
        customer.firstName = orderRequest.customer.firstName;
        customer.lastName = orderRequest.customer.lastName;
        customer.email = orderRequest.customer.email;
        customer.password = orderRequest.customer.password;
        await customerRegistry.add(customer);
    }else{
        const customer = await customerRegistry.get(orderRequest.customer.email);    
    }

    const order = await factory.newResource("org.isn.shop","Order",orderRequest.orderId);
    order.customer = customer.getIdentifier();
    order.item = orderRequest.item;
    const orderRegistry = await getAssetRegistry("org.isn.shop.Order");
    await orderRegistry.add(order);

    const PlaceOrderEvent = factory.newEvent("org.isn.shop","PlaceOrderEvent");
    placeOrderEvent.order = order;
    emit(placeOrderEvent);
}

Answer 1

以下版本的模型和 JS 将适用于新客户和现有客户：

    namespace org.isn.customer

participant Customer identified by email {
 o String firstName
 o String lastName
 o String email
 o String password
}

enum Status{
o ACTIVE
o OFF_THE_ROAD  
}

asset Vehicle identified by serial {
 o String brand
 o String model
 o String color
 o Status status
 o Double price
 o String serial
}

asset Order identified by orderId{
 o String orderId
 --> Vehicle item
 --> Customer customer
}

transaction PlaceOrder {
    o String orderId
    --> Vehicle item
    o Customer customer
}


/**
 * @param {org.isn.customer.PlaceOrder}orderRequest  
 * @transaction
 */

async function placeOrder(orderRequest){
    const factory = getFactory(); 
    const customerRegistry = await getParticipantRegistry("org.isn.customer.Customer");
    const customerExists = await customerRegistry.exists(orderRequest.customer.email);
    if(!customerExists){ 
        var customer = factory.newResource("org.isn.customer","Customer",orderRequest.customer.email);
        customer.firstName = orderRequest.customer.firstName;
        customer.lastName = orderRequest.customer.lastName;
        customer.email = orderRequest.customer.email;
        customer.password = orderRequest.customer.password;
        await customerRegistry.add(customer);
    }else{
        var customer = await customerRegistry.get(orderRequest.customer.email);    
    }
    const order = await factory.newResource("org.isn.customer","Order",orderRequest.orderId);
    order.customer = factory.newRelationship("org.isn.customer","Customer",customer.getIdentifier());
    order.item = orderRequest.item;
    const orderRegistry = await getAssetRegistry("org.isn.customer.Order");
    await orderRegistry.add(order);
}

请注意以下几点： 在订单资产中，我已将o Vehicle 更改为--> Vehicle item 以匹配交易。

我还在 if 和 else 代码中使用了var customer。

（为了使我的工作，我必须使用相同的命名空间，但也许你有单独的 .cto 文件）

Answer 2

o Customer customer 需要变为 --> Customer customer 然后你将能够引用 orderRequest.customer.firstName 等也不确定你是否需要 order.customer = customer.getIdentifier(); 可能需要变为 order.customer.email = customer.getIdentifier();