firestore array_contains 条件被忽略（python）

Question

I am using python (3.11) to query google firestore db specifically 'array_contains' condition, but it just ignores it and does not do any filtering

Here is my code:

tails_ref = db_ref.collection('tails')
tails_ref.where('visible_to', 'array_contains', 'red')
docs = tails_ref.stream()
for doc in docs:
    print(f"{doc.id} => {doc.to_dict()}")

as a result I am getting whole collection:

0NAjJEgWWZqX9n5PALTp => {..., 'visible_to': ['red', 'blue'], ...}
1KHfzw9zcgISxGKtaWA0 => {..., 'visible_to': ['blue'], ...}
1d3YWvDileK3105UXRTd => {..., 'visible_to': [], ...}
5xaQsc4tD2SSco6g3E8F => {..., 'visible_to': ['red'], ...}

I expect to see only docs with value 'red' in 'visible_to' array What am I doing wrong?

Answer 1

after posting a question I found a mistake: I need to re-assign reference with condition:

tails_ref = tails_ref.where('visible_to', 'array_contains', 'red')

Answer 2

tails_ref = tails_ref.where('visible_to', 'array_contains', 'red')