error invoke requestTrade

[woodyjon]

in page 106, I do $ peer chaincode invoke -n tw -c '{"Args":["requestTrade","50000","Wood for Toys"]}' -C tradechannel. I get the following error: Incorrect number of arguments. Expecting 3: {ID, Amount, Description of Goods}. Found 2)

It seems logical to me as the in the go code of func requestTrade() (in tradeWorkflow.go), the args is only 2 elements long as the name of the function is not included. But then also, I do not understand what you expect in line 206 in args[0] when you do tradeKey, err = getTradeKey(stub, args[0])

I use trade-finance-logistics master, fabric 1.1, trade_workflow_v1.

Thank you for your support.

[VRamakrishna]

Please check the errata I mentioned on the other thread. We noticed a few errors as well as the version number omission and submitted them to the publishers.

If you can't find the errata on the Packt site, I'll post it here.

[woodyjon]

Ho I see. Yes indeed, it works with the errata ;-) Big thank you for getting back so quickly.

For people who encounter the same issue, here it is:

Full errata here: https://www.packtpub.com/books/content/support/33475

specifically for this issue:

Errata type: code Page no 106

This:

1. Put a new trade agreement on the ledger with the following command: $ peer chaincode invoke -n tw -c '{"Args":["requestTrade", "50000", "Wood for Toys"]}' -C tradechannel
2. Retrieve the trade agreement from the ledger with the following command: $ peer chaincode invoke -n tw -c '{"Args":["getTradeStatus", "50000"]}' -C tradechannel

Should be:

1. Put a new trade agreement with a unique ID trade-12 on the ledger with the following command: $ peer chaincode invoke -n tw -c '{"Args":["requestTrade", "trade-12", "50000", "Wood for Toys"]}' -C tradechannel

2. Retrieve the trade agreement with the ID trade-12 from the ledger with the following command: $ peer chaincode invoke -n tw -c '{"Args":["getTradeStatus", "trade-12"]}' -C tradechannel