CODEWITHSUNDEEP
javascriptreactjsfirebasegoogle-cloud-firestore
poldeeek
poldeeek

Reputation: 333

Unhandled Rejection (FirebaseError) Function DocumentSnapshot.get() requires between 1 and 2 arguments, but was called with 0 arguments

I am trying to get Events from my Firebase database, but I have no idea, why I got this error :

Unhandled Rejection (FirebaseError): Function DocumentSnapshot.get() requires between 1 and 2 arguments, but was called with 0 arguments.

I have used very similar way in other components and everthing was right then...

 const getEvents = async () => {
        const ref = await firebase.firestore().collection('uzytkownik').doc(selectedUser);

        firebase.firestore().collection('wydarzenie')
            .where("uczestnicy", "array-contains", ref).get()
            .then(async resp => {
                console.log(resp)
                const new_array = await Promise.all(resp.docs.map(event => {
                    console.log(event)
                    return event.get().then(resp => {
                        let new_event = {
                            ...resp.data(),
                            id: resp.id
                        }
                        return new_event;
                    })
                }))
                console.log(new_array)
                setUserEvents(new_array)
            })
    }

resp : enter image description here

event : enter image description here

Upvotes: 0

Views: 217

Answers (1)

Frank van Puffelen
Frank van Puffelen

Reputation: 598765

As far as I can see, you're looking for this:

const ref = await firebase.firestore().collection('uzytkownik').doc(selectedUser);

firebase.firestore().collection('wydarzenie')
    .where("uczestnicy", "array-contains", ref).get()
    .then(async snapshot => {
        const new_array = snapshot.docs.map(doc => {
                return {
                    ...doc.data(),
                    id: doc.id
                }
            })
        }))
        console.log(new_array)
        setUserEvents(new_array)
    })

At the end of this the console.log(new_array) will log data and ID of all documents that match the query.

Upvotes: 1

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