[FIXED] How to know if document exists in firestore python?

Issue

im using the firestore library from google.cloud, is there any way to check if a document exists without retrieven all the data? i tried

fs.document("path/to/document").get().exists()

but it returns a 404 error. (google.api_core.exceptions.NotFound)

then i tried

fs.document("path/to/document").exists()

but "exists" isn't a function from DocumentReference.

I can see from the source that exists() is a function from the DocumentSnapshot Class, and the function get() should return a documentSnapshot. i'm not very sure how else i can get a DocumentSnapshot

Thank you

Solution

A much simpler and memory efficient approach:

doc_ref = db.collection('my_collection').document('my_document')
doc = doc_ref.get()
if doc.exists:
    logging.info("Found")
else:
    logging.info("Not found")

Note: this lazy loads the document by not fetching the content. So this is faster then getting the whole document. This does count as a single read.

Source

Answered By - Cloudkollektiv