Issue creating MID stream using JS libraries

Devtools Ceramic SDKs
1

Hello everyone,

I’m trying to create model streams using the JS libraries directly and I’m facing some issues and it’s hard to debug since there doesn’t seem to be a lot of doc covering this.

Here is the process I followed so far:

I used the @ceramicnetwork/stream-model library to create a model which worked, the model is available here: https://cerscan.com/mainnet/stream/kjzl6hvfrbw6c7qqnhgjubuiwbg1965tm4zsw5p5jutpapxrpbux0qy6e3non81

I’m then trying to use the @ceramicnetwork/stream-model-instance library to create streams using this model but I constantly get a Error: undefined is not supported by the IPLD Data Model and cannot be encoded error which seems to be coming from the _signDagJWS function. Here is the code I’m using to create the stream:

let stream = await ModelInstanceDocument.create(
  this.ceramic,
  { asset: 'bitcoin', price: '36838', timestamp: 1699524618 },
  {
    model: "kjzl6hvfrbw6c7qqnhgjubuiwbg1965tm4zsw5p5jutpapxrpbux0qy6e3non81",
    controller: this.session.id
  }
);

Is there anything I’m doing wrong? cc @spencer

In the past I got this error when the stream content wasn’t valid vs the schema/model but everything seems fine in the example I shared.

2

I solved it by using StreamID.fromString("kjzl6hvfrbw6c77ypg2ug7kka2zorn82534vt1k1phjstjgpm1v77wg8caqet4w") instead of the model ID as a simple string.

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3

Thank you for sharing the solution here, @baptiste! :raised_hands:

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