Google Firestore: Query on substring of a property value (text search)

Question

I am looking to add a simple search field, would like to use something like

collectionRef.where(\'name\', \'contains\', \'searchTerm\')

I tried

Answer 1

There's no such operator, allowed ones are ==, <, <=, >, >=.

You can filter by prefixes only, for example for everything that starts between bar and foo you can use

collectionRef.where('name', '>=', 'bar').where('name', '<=', 'foo')

You can use external service like Algolia or ElasticSearch for that.