I try to loop through all my documents and check if there is a matching between an object Id and my id then push the data into an array , my problem is that I can not get back any data my array is always empty here is my code :
let d = []
let b;
const all = await db.collection('cars')
.get()
.then(documentSnapshot =>
{ if (!documentSnapshot.empty) {
documentSnapshot.map(async (doc) => {
idd = await doc.data().user.id;
if(idd == 'myid'){
b = doc.data();
d.push(b)
}
});
}
}
);
return Promise.all(all).then(() => setActiveSpinner(false), setThereIsData(true)).catch(e => console.log(e))
You have different issues within your implementation.
First, you are mixing both plain Promise objects with callback handlers along with async/await imperative usage which usually leads to un-wanted program behavior.
You are miss-collecting the different matching documents using the Array.prototype.map operator without neither returning a result for each element nor for the transformed result.
Here down a trimmed implementation using the async/await pattern:
const result = [];
const querySnapshots = await db.collection('cars').get();
for (const document of querySnapshots.docs) {
const data = document.data();
if (data.user.id === 'myid') {
result.push(b);
}
}
setActiveSpinner(false);
setThereIsData(true);
return result;