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ViewsFirebase React: Remove Item (Map) from array in firestore
I'm trying to remove a map item from an array in firebase. From what I understand with firebase - you are unable to delete the item based on the index. Should I structure this a different way or is there an easier way to remove a specific object from the array? Thank you
Error: 'No document to update: '
const listingRef = doc(db, 'users', 'savedListings');
const deleteListing = async () => {
try {
await updateDoc(listingRef, {
savedListings: deleteField()
});
} catch (e) {
console.log(e.message);
}
};```
·
Santiago Gelvez
1 answers
Answer question0
The doc() takes path to a document that should be users/test@user.com in this case. While you can use arrayRemove() to remove elements from an array field you cannot delete an object from an array unless you know the exact value that object including all the fields.
const listingRef = doc(db, 'users', 'USER_EMAIL'); // USER_EMAIL is document ID
const deleteListing = async () => {
try {
await updateDoc(listingRef, {
savedListings: arrayRemove("THAT_OBJECT")
});
} catch (e) {
console.log(e.message);
}
};
If you don't have that exact object, then you'll have to read the document, manually remove the element from array and update the document back.
·
Santiago Gelvez
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