contract-update-history.js

// See https://docs.dash.org/projects/platform/en/stable/docs/tutorials/contracts-and-documents/update-documents.html
const setupDashClient = require('../setupDashClient');

const client = setupDashClient();

const updateContract = async () => {
  const { platform } = client;
  const identity = await platform.identities.get(process.env.IDENTITY_ID); // Your identity ID

  const existingDataContract = await platform.contracts.get(
    process.env.CONTRACT_ID,
  );
  const documentSchema = existingDataContract.getDocumentSchema('note');
  console.log(documentSchema);

  documentSchema.properties.author = {
    type: 'string',
    position: 1,
  };

  existingDataContract.setDocumentSchema('note', documentSchema);
  existingDataContract.setConfig({
    keepsHistory: true, // Enable storing of contract history
  });

  console.log(existingDataContract.getDocumentSchema('note'));
  console.dir(existingDataContract.toJSON());
  // Sign and submit the data contract
  await platform.contracts.update(existingDataContract, identity);
  return existingDataContract;
};

updateContract()
  .then((d) => console.log('Contract updated:\n', d.toJSON()))
  .catch((e) => console.error('Something went wrong:\n', e))
  .finally(() => client.disconnect());