firestore set a document
let data = {
name: 'Los Angeles',
state: 'CA',
country: 'USA'
};
// Add a new document in collection "cities" with ID 'LA'
let setDoc = db.collection('cities').doc('LA').set(data);firestore set a document
let data = {
name: 'Los Angeles',
state: 'CA',
country: 'USA'
};
// Add a new document in collection "cities" with ID 'LA'
let setDoc = db.collection('cities').doc('LA').set(data);firestore create document with auto id
// Add a new document with a generated id.
db.collection("cities").add({
name: "Tokyo",
country: "Japan"
})
.then(function(docRef) {
console.log("Document written with ID: ", docRef.id);
})
.catch(function(error) {
console.error("Error adding document: ", error);
});
---------------------------
//If you want to specify id then use .set()
// e.x /
db.collection("cities").doc("TYO").set({
name: "Tokyo",
country: "Japan"
})firestore update map
let initialData = {
name: 'Frank',
age: 12,
favorites: {
food: 'Pizza',
color: 'Blue',
subject: 'recess'
}
};
let updateNested = db.collection('users').doc('Frank').update({
age: 13,
'favorites.color': 'Red'
});firebase update data
await firebase.database().ref().update(updates);document.set() firebasefirestore java
var washingtonRef = db.collection("cities").doc("DC");
// Atomically add a new region to the "regions" array field.
washingtonRef.update({
regions: firebase.firestore.FieldValue.arrayUnion("greater_virginia")
});
// Atomically remove a region from the "regions" array field.
washingtonRef.update({
regions: firebase.firestore.FieldValue.arrayRemove("east_coast")
});Copyright © 2021 Codeinu
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