Google Firestore - how to get document by multiple ids in one round trip?

Question

I am wondering if it\'s possible to get multiple documents by list of ids in one round trip (network call) to the Firestore.

Answer 1

In practise you would use firestore.getAll like this

async getUsers({userIds}) {
    const refs = userIds.map(id => this.firestore.doc(`users/${id}`))
    const users = await this.firestore.getAll(...refs)
    console.log(users.map(doc => doc.data()))
}

or with promise syntax

getUsers({userIds}) {
    const refs = userIds.map(id => this.firestore.doc(`users/${id}`))
    this.firestore.getAll(...refs).then(users => console.log(users.map(doc => doc.data())))
}