I want get the user profile data from firebase of a specified user.
By instance I want return the displayName and the email address of the user where UID HBJKD12345
I use this function :
this.userProfile = this.af.database.object('/users/'+this.authInfo.uid)
But with a console.log(this.userProfile.email) I get a "Undefined"
In my view I have to use : {{(userProfile | async )?.email}}
With this line I can show the email address of the user but why I get "Undefined" when I try with console.log ?
Your view works because of async. It unwraps the actual value. For console.log(), you would need to do something similar. Try this.userProfile.$value().
Take a look at https://github.com/angular/angularfire2/blob/master/docs/2-retrieving-data-as-objects.md#meta-fields-on-the-object or https://github.com/angular/angularfire2/blob/master/docs/2-retrieving-data-as-objects.md#meta-fields-on-the-object
Related
I have seen examples of listening to document changes in streambuilder, but is it possible to use it in providers? I want to listen to changes in the document in userinfo collection.
Here is my code:
in databaseservice.dart
Stream <DocumentSnapshot> get info{
return userinfo.doc(uid).snapshots();
}
In main
return MultiProvider(
providers: [
StreamProvider<DocumentSnapshot>.value(
value: DatabaseService().info
), // other providers
In wrapper where I need to see the change:
final info = Provider.of<DocumentSnapshot>(context).data();
However, I'll first get error:
The method 'data' was called on null.
Receiver: null
Tried calling: data()
And later, the info variable is giving me null instead of a map.
I want to let users input their name and age after their first signup, but not when they sign in. So my idea is that when users sign up, there will be a new document in the collection, "userinfo", which sets their age and name as null at first.
Then the wrapper checks if the name is null. If null, it will turn to the gather information page. If it has a value, it will turn to the home page.
Could anyone tell me where I am doing wrong with my document snapshot thing, or have a better idea to implement this?
My use case is that I want to ask newly signed up users to enrich basic info like their names.
So I was hoping to do it like:
firebase.auth().onAuthStateChanged(function(user) {
if (user) {
// User is signed in.
if (some indicator tells me it is newly signed up user)
{redirect to a form to fill in more info}
} else {
// No user is signed in.
}
});
I checked the doc, and could not find anything related to this...
Thanks for the help in advance.
Since version 4.6.0: https://firebase.google.com/support/release-notes/js#4.6.0
You can get if a user is new or existing in 2 ways:
If you are getting back a UserCredential result, check result.additionalUserInfo.isNewUser
Check firebase.auth().currentUser.metadata.creationTime === firebase.auth().currentUser.metadata.lastSignInTime
Previously you had to do that on your own and keep track of the user using Firebase Realtime Database. When a user signs in, you check if a user with the specified uid exists in the database or not. If the user was not found, it is a new user, you can then add the user to the database. If the user is already in the database then this is a returning existing user. Here is an example in iOS.
Handing Firebase + Facebook login process
Example for using result.additionalUserInfo.isNewUser:
firebase.auth().signInWithPopup(provider).then((result) => {
console.log(result.additionalUserInfo.isNewUser);
});
One thing you can do is do things in the callback function of the signup function, the signup function do return a promise. You can do something like this:
firebase.auth().createUserWithEmailAndPassword(email, password)
.then(function(user) {
//I believe the user variable here is the same as firebase.auth().currentUser
//take the user to some form you want them to fill
})
.catch(function(error) {
// Handle Errors here.
var errorCode = error.code;
var errorMessage = error.message;
// ...
});
However, I don't really recommend doing it this way because the client side code can be unreliable. Think about what if a user suddenly disconnect before they can fill the form. Their data will be incomplete in your database. So if you do it this way, do set a flag in your user's profile when they submit the form so that you know who filled detailed information and who didn't.
Another better way to do this is using firebase cloud functions. You can have code like this in your cloud functions. Cloud functions are written in node.js so you don't need to spend time on another language.
exports.someoneSignedUp = functions.auth.user().onCreate(event => {
// you can send them a cloud function to lead them to the detail information form
//or you can send them an welcome email which will also lead them to where you want them to fill detailed information
});
This way is much better because you can safely assume that your cloud functions server will never be down or compromised. For more information about cloud functions you can refer to their doc: https://firebase.google.com/docs/functions/auth-events
You can check the sign-in methods the user has (if any). If there are none, it is a new user.
// Fetch sign in methods (if any)
Auth.auth().fetchSignInMethods(forEmail: userEmail!) { [self] signInMethodsArray, error in
// Check for error and alert user accordingly
if let error = error {
// handle errors
}
// Email accepted.
// Check if new or returning user.
else {
if (signInMethodsArray == nil) {
// New User
}
else {
// Returning User
}
}
}
This is Swift (iOS) code, but the concept is the same across languages.
I try to make a push notification for my google assistant app.
I used the sendNotification Code form the google developer site: https://developers.google.com/actions/assistant/updates/notifications
I am coding Java.
Everything is working, expect getting the correct user id.
When I hardcode my user it works, but how do I get the user id in the code?
I tried following code:
Argument arg_userId = request.getArgument(ConstantsKt.ARG_UPDATES_USER_ID);
String userId = request.getUser().getUserId();
--> I get "java.lang.reflect.InvocationTargetException"
String userId = arg_userId.getRawText();
--> same Exception
There are two problems with the approach you're taking to get the notification ID:
The ID attached to the user object is deprecated and probably unavailable.
This wasn't the ID you wanted anyway.
In the response where the user finalizes the notification, that response includes an ID which you should get and store. Since you're using Java, the code might look something like this:
ResponseBuilder responseBuilder = getResponseBuilder(request);
Argument permission = request.getArgument(ConstantsKt.ARG_PERMISSION);
if (permission != null) {
Argument userId = request.getArgument(ConstantsKt.ARG_UPDATES_USER_ID);
// code to save intent and userID in your db
responseBuilder.add("Ok, I'll start alerting you.").endConversation();
} else {
responseBuilder.add("Ok, I won't alert you.");
}
return responseBuilder.build();
Right now I am using an http 0.11.3+16 and I am able to add a true value to an item on the site using the following function:
if (newAcceptStatus) {
response = await http.put('https://example.com/example1/${selectedOrder.id}/example2/${_authenticatedUser.id}.json?auth=${_authenticatedUser.token}',
body: json.encode(true));
this function is only called when the admin is logged in and the admin is the only one that can change the status of the Boolean, so the value is stored under the admins id and token. so I tried the following to help show if the item was changed by the admin to the user but i keep getting that the value is null when i decode the response with the following function:
Future<Null> checkAccept() async{
http.Response response;
response = await http.get('https://example.com/example1/${selectedOrder.id}/example2/(admin id goes here).json?auth=${_authenticatedUser.token}');
accepted = json.decode(response.body);
}
not sure what i am doing wrong. any help would be appreciated!
I was calling the wrong list of items which were very similar, thus giving me an empty list
My use case is that I want to ask newly signed up users to enrich basic info like their names.
So I was hoping to do it like:
firebase.auth().onAuthStateChanged(function(user) {
if (user) {
// User is signed in.
if (some indicator tells me it is newly signed up user)
{redirect to a form to fill in more info}
} else {
// No user is signed in.
}
});
I checked the doc, and could not find anything related to this...
Thanks for the help in advance.
Since version 4.6.0: https://firebase.google.com/support/release-notes/js#4.6.0
You can get if a user is new or existing in 2 ways:
If you are getting back a UserCredential result, check result.additionalUserInfo.isNewUser
Check firebase.auth().currentUser.metadata.creationTime === firebase.auth().currentUser.metadata.lastSignInTime
Previously you had to do that on your own and keep track of the user using Firebase Realtime Database. When a user signs in, you check if a user with the specified uid exists in the database or not. If the user was not found, it is a new user, you can then add the user to the database. If the user is already in the database then this is a returning existing user. Here is an example in iOS.
Handing Firebase + Facebook login process
Example for using result.additionalUserInfo.isNewUser:
firebase.auth().signInWithPopup(provider).then((result) => {
console.log(result.additionalUserInfo.isNewUser);
});
One thing you can do is do things in the callback function of the signup function, the signup function do return a promise. You can do something like this:
firebase.auth().createUserWithEmailAndPassword(email, password)
.then(function(user) {
//I believe the user variable here is the same as firebase.auth().currentUser
//take the user to some form you want them to fill
})
.catch(function(error) {
// Handle Errors here.
var errorCode = error.code;
var errorMessage = error.message;
// ...
});
However, I don't really recommend doing it this way because the client side code can be unreliable. Think about what if a user suddenly disconnect before they can fill the form. Their data will be incomplete in your database. So if you do it this way, do set a flag in your user's profile when they submit the form so that you know who filled detailed information and who didn't.
Another better way to do this is using firebase cloud functions. You can have code like this in your cloud functions. Cloud functions are written in node.js so you don't need to spend time on another language.
exports.someoneSignedUp = functions.auth.user().onCreate(event => {
// you can send them a cloud function to lead them to the detail information form
//or you can send them an welcome email which will also lead them to where you want them to fill detailed information
});
This way is much better because you can safely assume that your cloud functions server will never be down or compromised. For more information about cloud functions you can refer to their doc: https://firebase.google.com/docs/functions/auth-events
You can check the sign-in methods the user has (if any). If there are none, it is a new user.
// Fetch sign in methods (if any)
Auth.auth().fetchSignInMethods(forEmail: userEmail!) { [self] signInMethodsArray, error in
// Check for error and alert user accordingly
if let error = error {
// handle errors
}
// Email accepted.
// Check if new or returning user.
else {
if (signInMethodsArray == nil) {
// New User
}
else {
// Returning User
}
}
}
This is Swift (iOS) code, but the concept is the same across languages.