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joining multiple documents in cloud firestore

By Different DonkeyDifferent Donkey on Apr 21, 2021 
let loadedPosts = {};
posts = db.collection('posts')
          .orderBy('timestamp', 'desc')
          .limit(3);
posts.get()
.then((docSnaps) => {
  docSnaps.forEach((doc) => {
    loadedPosts[doc.id] = doc.data();
    db.collection('users').child(doc.data().uid).get().then((userDoc) => {
      loadedPosts[doc.id].userName = userDoc.data().name;
    });
  })
});

Source: stackoverflow.com

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joining multiple documents in cloud firestore

By Different DonkeyDifferent Donkey on Apr 21, 2021 
let users = {} ;
let loadedPosts = {};
db.collection('users').get().then((results) => {
  results.forEach((doc) => {
    users[doc.id] = doc.data();
  });
  posts = db.collection('posts').orderBy('timestamp', 'desc').limit(3);
  posts.get().then((docSnaps) => {
    docSnaps.forEach((doc) => {
    loadedPosts[doc.id] = doc.data();
    loadedPosts[doc.id].userName = users[doc.data().uid].name;
  });
});

Source: stackoverflow.com

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