Load a file during createsession

Grasshopper ShapeDiver
1

I’m trying to admin different saved set of parameters each one with a different input file (dwg).
I want to control the start of the session regarding the parameters with initialParameterValues. OK
But I need help to start the session with a different dwg file. (I say different because the model have its own default dwg file).

2

This code example explains how to set the value of file parameters through the API.

And this one explains how to set initial parameter values when starting a session.

This should give you everything you need to setup a file parameter as initial value when loading the viewer.

3

I followed the code example to upload a dwg file parameter.
I debuged the code line by line and an error arises when executes session.customize()
Uncaught (in promise) undefined bundle.js:195880:95
rejected bundle.js:195880
(Async: promise callback)
step bundle.js:195881
fulfilled bundle.js:195879
(Async: promise callback)
step bundle.js:195881
fulfilled bundle.js:195879
(Async: promise callback)
step bundle.js:195881
fulfilled bundle.js:195879
(Async: promise callback)
step bundle.js:195881
fulfilled bundle.js:195879
(Async: promise callback)
step bundle.js:195881
__awaiter bundle.js:195882
__awaiter bundle.js:195878
index.ts:14
index.ts:88
bundle.js:195954
bundle.js:195956

4

Could you share a minimal code example (on codepen or code sandbox) that can help us reproduce the issue so we can investigate it?

5

I could find a way to upload a dwg file with the mime thing.
Now it’s working.
It seems a good way to you?
Thanks

// get the file input
const fileInputParameter = session.getParameterByName(“MyParameterName”)[0] as IFileParameterApi;

// load dwg file
const dwgBlob = await (await fetch(“/files/parcela2.dwg”)).blob();

// Create a File object from the Blob
const fileName = “MyFile.dwg”; // You can dynamically determine the file name if needed
const mimeType = guessMimeTypeFromFilename(fileName)[0]; // Use your existing function to guess the MIME type
const dwgFile = new File([dwgBlob], fileName, {
type: mimeType
});
// Now set this file as the value of your parameter
fileInputParameter.value = dwgFile;
await session.customize();

6

This should work. You could also skip guessing the mime type and directly hard code application/dxf when you create the file.

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