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Passing an array as argument to chaincode via Node.js SDK #fabric-questions #fabric-chaincode
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@secure12
In the chaincode (in Golang) I have the following function:
func (s *SmartContract) f(ctx contractapi.TransactionContextInterface, arr []string) error { /* function details */ }When I attempt to call this function via the Node.js SDK, contract.submitTransaction('f', my_array);where my_array equals ["v1", "v2"]. I get the following error message=Error managing parameter param0. Conversion error. Value v1,v2 was not passed in expected format []stringWhat should be the right way to invoke the chaincode function via the SDK?
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Matthew White
Hello -
The 'submitTransaction' function takes and array of parameters. In this case the transaction function has a single parameter, but it's an array.
So you need to pass a single element array to 'submitTransaction', with the only element being the ["v1", "v2"]
Regards, Matthew.
Matthew B White IBM Blockchain Solutions Architect
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@secure12
Sorry, I don't quite understand. my_array is a single array here, no?
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@secure12
I finally succeed to call the function by passing the first parameter with it JSON.strinify-ed, then laster unmarshal it in the chaincode. But I believe there are better ways.
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