当我尝试通过Hyperledger Composer中的事务添加资产时遇到错误

Question

sample.cto文件

  namespace org.example.basic

    asset Supplier identified by suppliername
    {
      o String suppliername
    }
    asset product identified by productname{
    o String productname
    -->Supplier supplier
    o Integer amount
    }



    transaction SampleTransaction {
      -->product productasset
      o String productname
      o String supplier
      o Integer amount
    }

logic.js文件

/ **  *示例交易处理器功能。  * @param {org.example.basic.SampleTransaction} tx示例事务实例。  * @交易  * /

async function createPost(tx) {

      var factory = getFactory();
      return getAssetRegistry("org.example.basic.product")
      .then(function(postAssetRegistry) {
       var productname=tx.productname
       newPost = factory.newResource("org.example.basic", "product", productname);
       newPost.productname = tx.productname;
       newPost.supplier = tx.supplier;
       newPost.amount=tx.amount;

       return postAssetRegistry.add(newPost);
  })





}

click here to view error image

Answer 1

在模型文件的事务定义中，您指定一个字符串，但是在脚本CREATE SCHEMA Sprockets AUTHORIZATION Annik CREATE TABLE NineProngs (source int, cost int, partnumber int) GRANT SELECT ON SCHEMA::Sprockets TO Mandar DENY SELECT ON SCHEMA::Sprockets TO Prasanna; GO 的这一行中，Composer将newPost.supplier属性强制为一种关系，因此其值应类似于newPost.supplier = tx.supplier;