...by Daniel Szego
"On a long enough timeline we will all become Satoshi Nakamoto.."
Daniel Szego

Saturday, July 7, 2018

Fabric composer tips and tricks - create a new asset

To create a new asset in Fabric composer in the transaction, you have to do the following steps:

0. Supposing you have a model file and an asset:

  asset AssetName identified by <primkey> {
    o <type>  <primkey>
    o <type>  RequiredField1 
    o <type>  RequiredField2 

1. get a factory object: it helps you to create other resources, events, assets and so on.

  const factory = getFactory();

2. create a new asset with the help of the factory newResource call and with a new value for the primary key. After that update all the required fields for your asset.

  const newAsset=factory.newResource(namespace,'AssetName', <primkey>);
  newAsset.RequiredField1 = value1;
  newAsset.RequiredField2 = value2;

3.  Get an asset registry to update your asset:

  const newAssetRegistry = await getAssetRegistry(namespace + '.AssetName');

4.  add the new asset to the asset registry.

   await newAssetRegistry.add(newAsset);