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Viewshow to add a new key and value to an existing object in firebase 9 without overwriting previous data
I am trying to add to an object in firestore, the problem is the new object overwrites the previous objects so in my case only one object remains, i put a picture of the db and also the logic that I am using.
const docRef = doc(db, 'items', _authContext.currentUser.uid);
await updateDoc(docRef, {
itemlist: {
[diffrent key each time]: arrayUnion({ name: 'item whatever')}],
},
}), { merge: true };
};
·
Juan Pablo Isaza
1 answers
Answer question0
You should use dot notation when updating a nested field. Also updateDoc() doesn't take the options with merge property (it's setDoc() that does). Try refactoring the code as shown below:
const docRef = doc(db, 'items', _authContext.currentUser.uid);
const differentKey = "someKey";
await updateDoc(docRef, {
[`itemList.${differentKey}`]: arrayUnion({ name: "item whatever" }),
});
·
Juan Pablo Isaza
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