react native firestore. 'array-contains' query not working with number value

Question

Have a strange problem with react-native-firebase library:

Steps:

Try to fetch data with the firestore:

await firestore().collection(collectionName)
                .where(ConversationModel.refs.employees, 'array-contains', '646').get();

where 646 - element in array

When I use an array of strings, this code works as expected

But when I set the number value (646) and try to fetch the array of numbers - this code returns empty result.

Correct sample:

await firestore().collection(collectionName) .where(ConversationModel.refs.employees, 'array-contains', '646').get();

Wrong sample:

await firestore().collection(collectionName) .where(ConversationModel.refs.employees, 'array-contains', 646).get();

UPDATE: Fixed in 6.1.0 https://invertase.io/oss/react-native-firebase/releases/v6.1.0

Tsepo Nkalai · Accepted Answer · 2019-11-17 13:58:14Z

0

The official documentation found here https://firebase.google.com/docs/firestore/query-data/queries says "You can use the array-contains operator to filter based on array values", I believe the key take away here is "values".

In the correct one you are using a string and in the wrong one you are using a Integer. It might then be that you have stored the values as Text string and not as Integers. Supported data types listed here https://firebase.google.com/docs/firestore/manage-data/data-types

answered Nov 17, 2019 at 13:58

Tsepo Nkalai

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Comments

Frank van Puffelen · Accepted Answer · 2019-11-17 15:25:08Z

0

Firestore queries are type-sensitive. If you want to get documents where the employees array contains the number 646, you need to build a query that checks for that number. So something like:

await firestore().collection(collectionName)
            .where(ConversationModel.refs.employees, 'array-contains', 646).get();

answered Nov 17, 2019 at 15:25

Frank van Puffelen

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