Hi I'm starting with javascript and react-native and I'm trying to figure out this problem for hours now. Can someone explain me how to get all the documents from firestore collection ?
I have been trying this:
async getMarkers() {
const events = await firebase.firestore().collection('events').get()
.then(querySnapshot => {
querySnapshot.docs.map(doc => {
console.log('LOG 1', doc.data());
return doc.data();
});
});
console.log('LOG 2', events);
return events;
}
Log 1 prints all the objects(one by one) but log 2 is undefined, why ?
The example in the other answer is unnecessarily complex. This would be more straightforward, if all you want to do is return the raw data objects for each document in a query or collection:
async getMarker() {
const snapshot = await firebase.firestore().collection('events').get()
return snapshot.docs.map(doc => doc.data());
}
if you want include Id
async getMarkers() {
const events = await firebase.firestore().collection('events')
events.get().then((querySnapshot) => {
const tempDoc = querySnapshot.docs.map((doc) => {
return { id: doc.id, ...doc.data() }
})
console.log(tempDoc)
})
}
Same way with array
async getMarkers() {
const events = await firebase.firestore().collection('events')
events.get().then((querySnapshot) => {
const tempDoc = []
querySnapshot.forEach((doc) => {
tempDoc.push({ id: doc.id, ...doc.data() })
})
console.log(tempDoc)
})
}
I made it work this way:
async getMarkers() {
const markers = [];
await firebase.firestore().collection('events').get()
.then(querySnapshot => {
querySnapshot.docs.forEach(doc => {
markers.push(doc.data());
});
});
return markers;
}