Tukukkk

I am new to composer playground but get the error mentioned in the title. There is something wrong in my transaction code. Help is greatly appreciated.

logic.js:

    /**

 * Make an entry for the action performed

 * @param {org.gbpcs.network.Document_Transaction} tx - transaction that contains the document,

 the user and the new action taken.

 * @transaction

 */

async function documentAction(tx) {





// add document action to user story

tx.modifier.actions.push(tx.action.action_id);

let assetRegistry = await getAssetRegistry('org.gbpcs.network.User')

// persist the state of the user

await assetRegistry.update(tx.modifier.actions);





// add document action to document story

tx.document.actions.push(tx.action.action_id);

assetRegistry = await getAssetRegistry('org.gbpcs.network.Document')

// persist the state of the document actions

await assetRegistry.update(tx.document.actions);





// emit a notification that entry was made

let actionNotification = getFactory().newEvent('org.gbpcs.network', 'Action_Notification');

actionNotification.document = tx.document;

actionNotification.user = tx.modifier;

emit(actionNotification);

}

model

namespace org.gbpcs.network



enum OPERATION {

    o READ

    o WRITE

    o UPDATE

    o DELETE   

    o CREATE 

}



asset Document identified by document_id{

    o String document_id

    // list of action_ids

    o String actions

}



participant User identified by user_id {

    o String user_id

    // list of actions_ids

    o String actions

}



asset Document_Action identified by action_id {



  o String action_id

  o DateTime time

  o Boolean success

  o OPERATION operation



}



transaction Document_Transaction {

  // document action was performed upon

  --> Document document

  // user that performed this action

  --> User modifier

  // action that was performed upon the document

  --> Document_Action action

}



event Action_Notification {

  --> User user

  --> Document document

}

As mentioned above, the error exists when i perform a Document_transaction in Composer playground.
I have looked up the errors but they seem to be very model specific. Therefore, I am aware that the error occured to others as well.

1. tx.modifier is a reference of Participant User not of Asset so you need getParticipantRegistry instead of getAssetRegistry
   


2. you need to update only tx.modifier in participantRegistry.update() and tx.document in assetRegistry.update()
   

Here Changed login.js

    /**

 * Make an entry for the action performed

 * @param {org.gbpcs.network.Document_Transaction} tx - transaction that contains the document,

 the user and the new action taken.

 * @transaction

 */

async function documentAction(tx) {





    // add document action to user story

    tx.modifier.actions.push(tx.action.action_id);

    let participantRegistry = await getParticipantRegistry('org.gbpcs.network.User')

    // persist the state of the user

    await participantRegistry.update(tx.modifier);





    // add document action to document story

    tx.document.actions.push(tx.action.action_id);

    let assetRegistry = await getAssetRegistry('org.gbpcs.network.Document')

    // persist the state of the document actions

    await assetRegistry.update(tx.document);





    // emit a notification that entry was made

    let actionNotification = getFactory().newEvent('org.gbpcs.network', 'Action_Notification');

    actionNotification.document = tx.document;

    actionNotification.user = tx.modifier;

    emit(actionNotification);

    }