Edit DDO Fields

To edit fields in the DDO structure, DDO instance from DDOManager is required to call updateFields method which is present for all types of DDOs, but targets specific DDO fields, according to DDO's version.

NOTE: There are some restrictions that need to be taken care of before updating fields which do not exist for certain DDO.

For e.g. deprecatedDDO, the update on services key is not supported, because a deprecatedDDO is not supposed to store services information. It is design to support only: id, nftAddress, chainId, indexedMetadata.nft.state.

Supported fields to be updated are:

export interface UpdateFields {
  id?: string;
  nftAddress?: string;
  chainId?: number;
  datatokens?: AssetDatatoken[];
  indexedMetadata?: IndexedMetadata;
  services?: ServiceV4[] | ServiceV5[];
  issuer?: string;
  proof?: Proof;
}

Usage of Update Fields Function

Now let's use DDO V4 example, DDOExampleV4 into the following javascript code, assuming @oceanprotocol/ddo-js has been installed as dependency before:

const { DDOManager } = require ('@oceanprotocol/ddo-js');

const ddoInstance = DDOManager.getDDOClass(DDOExampleV4);
const nftAddressToUpdate = "0xfF4AE9869Cafb5Ff725f962F3Bbc22Fb303A8aD8"
ddoInstance.updateFields({ nftAddress: nftAddressToUpdate }) // It supports update on multiple fields
// The same script can be applied on DDO V5 and deprecated DDO from `Instantiate DDO section`.

Execute script

node update-ddo-fields.js