CODEWITHSUNDEEP
reactjsfirebasereact-nativefirebase-realtime-database
Gherghina Andrei
Gherghina Andrei

Reputation: 45

react-native firebase retrieve user

im trying to make a call to firebase to retrieve an user by the Id which is stored in my context.

 const obj = firebase.database().ref("/users/" + userContext.state.userId).once('value')

enter image description here

But when i console.log(obj) it returns a Promise instead of an object

Promise {
  "_40": 0,
  "_55": null,
  "_65": 0,
  "_72": null,
}

Edit 1 : I have tried this 

const obj = database.ref("/users/" + userContext.state.user).once('value').then(snapshot => console.log('User data:', snapshot.val()))

But it prints : User data: null

Upvotes: 1

Views: 160

Answers (2)

R7G
R7G

Reputation: 1060

Here is the code

var user;

firebase.database().ref("/users/" + userContext.state.userId).once('value').then(function(snapshot) {
user= snapshot.val();
});

Hope will work according to your need

in case you need to use the value in state

export default class App extends Component {
  constructor() {
    super();
    this.state = {
      User: '',
      YourOtherData :'',
      YourOtherData2 :'',
    };
  }

getUserData(){
firebase.database().ref("/users/" + userContext.state.userId).once('value').then(function(snapshot) {
     const userData = snapshot.val();
     this.setState({ User: userData });
    });
}

}

Upvotes: 2

Jeffrey de Vos
Jeffrey de Vos

Reputation: 45

Try this:

 const obj = firebase.database().ref("/users/" + userContext.state.userId).once('value', function (snapshot))

If you console.log(snapshot.val()) this is what you should get:

Object {
  "avatar": "test avatar",
  "email": "[email protected]",
  "name": "Enter name",
  "username": "Enter username",
}

What do you want to do with the userID?

Upvotes: 0

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