Firestore 错误：文档必须具有偶数个路径元素

Question

I'm trying to update a document in Firestore and add a few fields that track the status of processing of that file.

The problem is that I'm getting the error: "A document must have an even number of path elements"

However, the path of the document is:

orders/orders_files_logs/orders_processing_status/A2EUQ1WTGCTBG2_Orders-2022_08_18-01-03-24

I've have a method in Python that I wrote and call when updating a document and it works, for documents in a different collection. The path to the other collection is shorter, though: /orders/orders_metadata .

I'm not exactly sure what I can do to fix this. The definiton of the Python method is simply:

def update_firestore_document(self, document_id, updated_information):
    self._collection.document(document_id).update(updated_information)

And I call this method with:

update_firestore_document(
    document_id = 'orders/orders_files_logs/orders_processing_status/A2EUQ1WTGCTBG2_Orders-2022_08_18-01-03-24',  
    updated_information = {'processed':'Success'})

Answer 1

Managed to found out the problem myself. When initializing the connection to the Firestore database using:

firestore_status_processor = FirestoreConnector(collection='orders', app_name='orders_processor')

where the definition of the FirestoreConnector class is:

def __init__(self, collection, app_name='[DEFAULT]'):
    firebase_admin.initialize_app(self._credentials, {'projectId': self._project_id}, name=app_name)
    self.__initialize_firestore_client_connection()
    self.__set_firestore_collection(collection=collection)

def __initialize_firestore_client_connection(self):
    self._database = firestore.client()

def __set_firestore_collection(self, collection):
    self._collection = self._database.collection(collection)

It seems that in my original code, where I call the firestore_status_processor.update_firestore_document() with the parameters I mentioned in my question, which the most important one is:

document_id = 'orders/orders_files_logs/orders_processing_status/A2EUQ1WTGCTBG2_Orders-2022_08_18-01-03-24'

By manually adding in the orders/ at the beginning, I am essentially breaking the path that is defined by the default Firebase client.

When debugging I notice that the actual path it was trying to write to was:

projects/(project-id)/database/(default)/documents/orders//orders/order_files_logs/orders_processing_status/A2EUQ1WTGCTBG2_Orders-2022_08_18-01-03-24

Removing the extra orders/ from the document_id parameter, when calling the update_firestore_document method did the trick.