i am trying to signup and save user info into firestore. Save operation is fine but i want to search that info but nothing happening. Here is my code
Signup
firestore
.collection("users")
.doc(user.userId)
.collection("profile")
.add({ ...user })
.then(() => {
auth.onAuthStateChanged((u) => {
if (u) {
u.updateProfile({
displayName: user.displayName,
});
}
});
});
Fetch All users data
firestore
.collection("users")
.get()
.then(function (querySnapshot) {
querySnapshot.forEach(function (doc) {
//doc.data() is never undefined for query doc snapshots
console.log(doc.id, " => ", doc.data());
});
});
You should be able to achieve by using a similar code as the below one. It very similar to yours, but with some differences, where we separate the referencing to the database and let the querySnapshot iterates by itself, so the data can be returned. I usually use this format to return data from collections.
var db = admin.firestore()
var usersReference = db.collection("users");
usersReference.get().then((querySnapshot) => {
querySnapshot.forEach((userDoc) => {
console.log(userDoc.id)
var userDocData = userDoc.data()
console.dir(userDocData)
})
})
This should work, so, in case it doesn't return anything, probably your saving opearation is not working properly. This will return both the user's id and the whole data from it.
Related
I use this code below and run well in Firebase RealTime Database:
const onDelete = (id) => {
if (
window.confirm("Are you sure that you wanted to delete the contact ?")
) {
Db.child(`contacts/${id}`).remove((err) => {
if (err) {
alert(err);
} else {
alert("Contact Deleted Successfully");
console.timeStamp(id);
}
});
}
};
Now I create another database in Firebase Firestore but cannot delete.
const onDelete = (id) => {
if (window.confirm("Are you sure that you wanted to delete contact ?")) {
firebase
.firestore()
.collection("contacts")
.doc(`${id}`)
.delete()
.then(() => {
console.log("Document successfully deleted!");
})
.catch((error) => {
console.error("Error removing document: ", error);
});
}
};
There's no difference in the databases here: in both cases you have to specify the full path to the data to be deleted.
If you can somehow specify line numbers for the Realtime Database, most likely you've used those line numbers as keys in your database. And if you can't do the same on Firestore, it's likely you didn't use the line numbers as document IDs there. If that is indeed the case, you'll need to either maintain a mapping from line numbers to document IDs, or use the line numbers for the document IDs in Firestore too.
const onDelete = async (id) => {
if (
window.confirm("Are you sure that you wanted to delete the contact ?")
) {
firebase
.firestore()
.collection("contacts")
.get()
.then(async (querySnapshot) => {
await deleteDoc(doc(db, "contacts", querySnapshot.docs[id].id));
alert("Contact Deleted Successfully");
});
}
};
I have been using firebase (firestore) for a while but I'm a little stuck and was wondering if anyone can think of a solution.
On the firestore DB I have a single collection of users, each user has an email address and several other fields. In this instance I am checking if a user email exists and if it does, I want to create a list field for that particular user with a listUid. I am referencing the users by email, grabbing the docId for those users and then trying to set a list field for each of them.
I am not getting any error's from firestore, it's simply not updating in the DB for some reason and I can't figure out where I am going wrong. Thanks in advance
export const addListUidToExistingUserList = (
{ firestore },
emailArray,
listUid
) => {
return async () => {
let docIds = [];
emailArray.forEach((emailAddress) => {
//find users by email (works)
const query = db
.collection("users")
.where("email", "==", emailAddress);
//get docId's for user with matching email (works)
query.get().then((querySnapshot) => {
querySnapshot.forEach((doc) => {
docIds.push(doc.id);
});
});
//add a new list with corresponding listUid (does not work)
docIds.forEach((id) => {
let userRef = db.collection("users").doc(id);
batch.set(userRef, { lists: [{ listUid }] });
});
});
return await batch.commit();
};
};
You are running into this issue because your docIds array is always empty at the time you call docIds.forEach.
That's because query.get().then runs asynchronously, and so docIds.forEach is not waiting for it to complete.
You could either:
await query.get().then; or
Add the docIds.forEach function INSIDE the then callback of query.get.
Here are your possible fixes:
await query.get().then
//get docId's for user with matching email (works)
await query.get().then((querySnapshot) => {
querySnapshot.forEach((doc) => {
docIds.push(doc.id);
});
});
OR:
docIds.forEach inside then
//get docId's for user with matching email (works)
query.get().then((querySnapshot) => {
querySnapshot.forEach((doc) => {
docIds.push(doc.id);
});
docIds.forEach((id) => {
let userRef = db.collection("users").doc(id);
batch.set(userRef, { lists: [{ listUid }] });
});
});
Note: Of course, you could also add batch.set directly into your first iteration of querySnapshot.docs.forEach to prevent an unnecessary iteration.
I am querying firebase firestore by...
let database = firebase.firestore();
let places = database.collection("place");
console.log("places", places);
now the logged data is bizarre and not the actual documents..
here is a picture of the log...can you please advice regarding tackling this ?
If you want to retrieve all items in your collections called "place" you can do something like this:
let database = firebase.firestore();
let places = database.collection("place");
const querySnapshot = places.get()
// You can make an empty array to eventually push the items into
const collectionArray = []
querySnapshot.forEach((doc) => {
const data = doc.data()
collectionArray.push(data)
}).catch(function(error) {
console.log("Error getting documents: ", error);
})
console.log('collectionArray:',collectionArray)
}
Your code hasn't actually executed any query yet. All it's done is build a Query object.
If you want to execute the query, call get() on it, and handle the results as shown in the documentation.
let database = firebase.firestore();
let query = database.collection("place");
query.get()
.then(querySnapshot => {
querySnapshot.forEach(documentSnapshot => {
console.log("document", documentSnapshot.data());
})
})
I'm trying to integrate stripe payment with my firestore firebase database. I'm having trouble figuring out add payment source function given in the firebase doc example. What am I missing here?
exports.addPaymentSource = functions.firestore
.document('Customers/{userId}/paymentSources/{paymentId}')
.onWrite((change, context) => {
let newPaymentSource = change.after.data();
if (newPaymentSource === null){
return null;
}
return admin.firestore().collection("Customers").doc(`${context.params.userId}`).get('customer_id')
.then((snapshot) => {
return snapshot.val();
}).then((customer) => {
return stripe.customers.createSource(customer, {newPaymentSource});
}).then((response) => {
return change.after.ref.parent.set(response);
}, (error) => {
return change.after.ref.parent.child('error').set(userFacingMessage(error));
}).then(() => {
return reportError(error, {user: context.params.userId});
});
});
I tried
console.log(snapshot.val())
and it gives me a type error.
Firestore database Image
Error Log Image
You're reading from Cloud Firestore, yet are using variable names and method calls that are for the Realtime Database. While both databases are part of Firebase, they're completely separate, and have different APIs.
The equivalent code for Firestore would be:
return admin.firestore().collection("Customers").doc(`${context.params.userId}`).get()
.then((doc) => {
return doc.data();
}).then((customer) => {
...
Also see:
the documentation on reading a document
I am transitioning a Firebase real-time database to a Firebase Firestore database but am having trouble finding the appropriate reference to query the current user.
onAuthUserListener = (next, fallback) =>
this.auth.onAuthStateChanged(authUser => {
if (authUser) {
this.user(authUser.uid)
.once('value')
.then(snapshot => {
const dbUser = snapshot.val();
// default empty roles
if (!dbUser.roles) {
dbUser.roles = [];
}
// merge auth and db user
authUser = {
uid: authUser.uid,
email: authUser.email,
emailVerified: authUser.emailVerified,
providerData: authUser.providerData,
...dbUser,
};
next(authUser);
});
} else {
fallback();
}
});
Most specifically, what would be the replacement for once('value') and snapshot.val();?
I had thought that
.onSnapshot(snapshot => {
const dbUser = snapshot.val();
...
The equivalent of once('value' in Firestore is called get(), and the equivalent of val() is data(). Calling get() returns a promise, so:
.get().then(snapshot => {
const dbUser = snapshot.data();
...
If you have a collection of users, where the profile of each user is stored within a document with their UID as its ID, you can load that with:
firebase.firestore().collection('users').doc(authUser.uid)
.get()
.then(snapshot => {
const dbUser = snapshot.val();
Note that this is pretty well covered in the documentation on getting data, so I'd recommend spending some time there and potentially taking the Cloud Firestore codelab.