Following code for set data on firebase database. I want to know how to get successfully saved details after set in firebase?
//get current time fire base
getCurrentDate() {
//Client Meeting model
let oCurrentDateModel = new current_date_model();
oCurrentDateModel.current_date_time_stamp = firebase.database.ServerValue.TIMESTAMP;
return new Promise<any>((resolve, reject) => {
this.oAngularFireDatabase.database.ref('/Settings')
.child('CurrentDate')
.set(oCurrentDateModel)
.then(
data => {
//THIS DATA IS UNDEFINED
//HERE I WANT TO GET SAVED current_date_time_stamp
console.log(data);
//Alert Generation
this.oAlertProvider.showAlert('Success', "Updated Successful");
},
err => {
reject(err);
//Alert Generation
this.oAlertProvider.showAlert('Error', err.message);
})
})
}
To get the value of a server-side timestamp, you will have to attach a listener:
let timestampRef = this.oAngularFireDatabase.database.ref('/Settings/CurrentDate/current_date_time_stamp');
let timestampListener = timestampRef.on("value", function(snapshot) {
if (snapshot.exists()) {
console.log(snapshot.val());
timestampRef.off("value", timestampListener);
}
});
This snippet of code also removes the listener once it has gotten the timestamp value.
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