[BUG] File vector upsert (API) - how to attach overrideConfig

[bendadaniel]

Hello,

Describe the bug
I upsert file to Pinecone vector store via API. It works fine. Hovewer I also want to include overrideConfig to push some specific metadata to vector store. I cannot find a way how to do it. When document is upserted it always contains string "{{$vars.mediaId}}" as metadata value. Chatflow should be fine I think, because if I change Document loader setting - additional metadata to awMediaId:"{{$flow.chatId}}" it works and in Pinecone's metadata 'awMediaId' is real chat id in value.

Base js code: (it works fine)

let formData = new FormData();
  formData.append("files", base64ToBlob(fileBase64, 'application/pdf'), "document.pdf");
  formData.append("chatId", chatId);  
  const response = await fetch(
      `${apiHost}/api/v1/vector/upsert/${chatflowid}`,
      {
          method: "POST",
          body: formData
      }
  );
  const result = await response.json();

I tried to append overrideConfig like this but it doesnt work:

// 1
formData.append("overrideConfig", JSON.stringify(
  {
    "vars": {
      "mediaId": "media-id-123"
  }
}));

// 2
formData.append("overrideConfig[vars][mediaId]", "media-id-123");  

// 3
formData.append("mediaId", "media-id-123");

Document loader

Pinecode result

Test with variable $flow.chatId -- it works

Do you have please any idea how to solve my problem?

Thank you

[HenryHengZJ]

I think one workaround is to have metadata in the formBody

formData.append("metadata", JSON.stringify({ "mediaId": "media-id-123" }));