Modify Business Network in Playground

Q

How to modify Business Network in Hyperledger Composer Playground?

✍: FYIcenter.com

A

You can follow this tutorial to modify a Business Network in Hyperledger Composer Playground and deploy it back to the Hyperledger Fabric simulator or server.

1. Open Hyperledger Composer Playground and go to Basic Sample Business Network home page, as shown in the previous tutorial.

2. Click "Define" tab. You see the development home page.

3. Click "Models/sample.cto" in the Model File section on the left. You see the model source code of Basic Sample Business Network.

4. Add a new attribute "name" to the SampleAsset object type:

...
asset SampleAsset identified by assetId {
  o String assetId
  --> SampleParticipant owner
  o String value
  o String name
}
...

5. Click "Deploy changes" button on the left bottom corner. The Basic Sample Business Network is deployed back to the Hyperledger Fabric simulator as version 0.2.6-deloy.1.

6. Click "Test" tab to create a SampleAsset object. This time you need to specify the "name" attribute:

{ "$class": "org.example.basic.SampleAsset",
  "assetId": "3rd_Asset",
  "owner": "resource:org.example.basic.SampleParticipant#Toby",
  "value": "1000000.99",
  "name": "Vacation House"
}

Modify Business Network in Playground

 

Download Business Network from Playground

Basic Sample Business Network - SampleEvent

Hyperledger Composer Playground

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2020-12-15, 369👍, 0💬