python - Using the Firestore REST API to Update a Document Field

Question

I've been searching for a pretty long time but I can't figure out how to update a field in a document using the Firestore REST API. I've looked on other questions but they haven't helped me since I'm getting a different error:

{'error': {'code': 400, 'message': 'Request contains an invalid argument.', 'status': 'INVALID_ARGUMENT', 'details': [{'@type': 'type.googleapis.com/google.rpc.BadRequest', 'fieldViolations': [{'field': 'oil', 'description': "Error expanding 'fields' parameter. Cannot find matching fields for path 'oil'."}]}]}}

I'm getting this error even though I know that the "oil" field exists in the document. I'm writing this in Python.

My request body (field is the field in a document and value is the value to set that field to, both strings received from user input):

{
    "fields": {
        field: {
            "integerValue": value
        }
    }
}

My request (authorizationToken is from a different request, dir is also a string from user input which controls the directory):

requests.patch("https://firestore.googleapis.com/v1beta1/projects/aethia-resource-management/databases/(default)/documents/" + dir + "?updateMask.fieldPaths=" + field, data = body, headers = {"Authorization": "Bearer " + authorizationToken}).json()

Answer 1

Waitting for answers