hyperledger composer adding Participants to array of Participants in transaction process - hyperledger-fabric

Question

I have defined Participant and asset as below and I want to add a particular participant to array of access[type Participant] in transaction. Can someone tell me how this can be done.
How can I add the participant identity to the array. How do I need to pass the identity through params and then add it to the array of participants. I have created the permissions according to the question I asked earlier. Link to the question for permission
ASSET DECLARATION
asset Details identified by detailsId {
o String detailsId
o String description optional
--> Bank owner
o Bank[] access optional
o String document
}
PARTCIPANT DECLARATION
participant Bank identified by bankId {
o String bankId
o String Name
}

Answer 1

You have made a small change to the model between the ACL example and this example - changing the access array which was a relationship before.
--> Bank[] access optional original
vs
o Bank[] access optional here
Based on the original model, first add this Transaction to the model:
transaction AddAccess {
--> Details details
--> Bank additionalAccess
}
Then, this scripted Transaction should work for you:
/**
* Adding a Bank to an access list
* #param {org.example.test.AddAccess} addA
* #transaction
*/
async function addAccess(addA) {
// Add the new access to the array, checking if empty first as it is optional field at creation
if (typeof addA.details.access == 'undefined') {
addA.details.access = new Array();
addA.details.access[0] = addA.additionalAccess;
}
else {
addA.details.access.push(addA.additionalAccess);
}
// get the Registry
const assetRegistry = await getAssetRegistry('org.example.test.Details');
// Update the Registry with the new details
await assetRegistry.update(addA.details);
}
Test with JSON like this:
{
"$class": "org.example.test.AddAccess",
"details": "resource:org.example.test.Details#D11",
"additionalAccess": "resource:org.example.test.Bank#9241"
}