How to remove a user from a firebase array if they force close the app in Ionic
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So i checked everywhere and cant seem to find a way to do this. I am creating a chat feature and have a menu showing all users currently on a certain chat page. I have an array in firebase of users that entered the chat.
I know how to remove the user if the app is still running in the background. I dont know how to remove the user from the array when the user force closes the app.
This is the code to remove the user when they go home and the app is still running the background:
//Remove user from online list if app is in background
document.addEventListener('pause', () => {
this.chatDB.update({
users: firebase.firestore.FieldValue.arrayRemove(firebase.auth().currentUser.toJSON())
});
})
//Add user if re enters the app from when it was in the background
document.addEventListener('resume', () => {
this.chatDB.update({
users: firebase.firestore.FieldValue.arrayUnion(firebase.auth().currentUser.toJSON())
});
})
But when i try to force close the app, these functions dont run
javascript firebase ionic3
edited Nov 24 '18 at 18:10
Frank van Puffelen
248k31394423
asked Nov 24 '18 at 17:26
JoelJoel
573
add a comment |
So i checked everywhere and cant seem to find a way to do this. I am creating a chat feature and have a menu showing all users currently on a certain chat page. I have an array in firebase of users that entered the chat.
I know how to remove the user if the app is still running in the background. I dont know how to remove the user from the array when the user force closes the app.
This is the code to remove the user when they go home and the app is still running the background:
//Remove user from online list if app is in background
document.addEventListener('pause', () => {
this.chatDB.update({
users: firebase.firestore.FieldValue.arrayRemove(firebase.auth().currentUser.toJSON())
});
})
//Add user if re enters the app from when it was in the background
document.addEventListener('resume', () => {
this.chatDB.update({
users: firebase.firestore.FieldValue.arrayUnion(firebase.auth().currentUser.toJSON())
});
})
But when i try to force close the app, these functions dont run
javascript firebase ionic3
edited Nov 24 '18 at 18:10
Frank van Puffelen
248k31394423
asked Nov 24 '18 at 17:26
JoelJoel
573
add a comment |
So i checked everywhere and cant seem to find a way to do this. I am creating a chat feature and have a menu showing all users currently on a certain chat page. I have an array in firebase of users that entered the chat.
I know how to remove the user if the app is still running in the background. I dont know how to remove the user from the array when the user force closes the app.
This is the code to remove the user when they go home and the app is still running the background:
//Remove user from online list if app is in background
document.addEventListener('pause', () => {
this.chatDB.update({
users: firebase.firestore.FieldValue.arrayRemove(firebase.auth().currentUser.toJSON())
});
})
//Add user if re enters the app from when it was in the background
document.addEventListener('resume', () => {
this.chatDB.update({
users: firebase.firestore.FieldValue.arrayUnion(firebase.auth().currentUser.toJSON())
});
})
But when i try to force close the app, these functions dont run
javascript firebase ionic3
edited Nov 24 '18 at 18:10
Frank van Puffelen
248k31394423
asked Nov 24 '18 at 17:26
JoelJoel
573
So i checked everywhere and cant seem to find a way to do this. I am creating a chat feature and have a menu showing all users currently on a certain chat page. I have an array in firebase of users that entered the chat.
I know how to remove the user if the app is still running in the background. I dont know how to remove the user from the array when the user force closes the app.
This is the code to remove the user when they go home and the app is still running the background:
//Remove user from online list if app is in background
document.addEventListener('pause', () => {
this.chatDB.update({
users: firebase.firestore.FieldValue.arrayRemove(firebase.auth().currentUser.toJSON())
});
})
//Add user if re enters the app from when it was in the background
document.addEventListener('resume', () => {
this.chatDB.update({
users: firebase.firestore.FieldValue.arrayUnion(firebase.auth().currentUser.toJSON())
});
})
But when i try to force close the app, these functions dont run
javascript firebase ionic3
javascript firebase ionic3
edited Nov 24 '18 at 18:10
Frank van Puffelen
248k31394423
asked Nov 24 '18 at 17:26
JoelJoel
573
edited Nov 24 '18 at 18:10
Frank van Puffelen
248k31394423
asked Nov 24 '18 at 17:26
JoelJoel
573
edited Nov 24 '18 at 18:10
Frank van Puffelen
248k31394423
edited Nov 24 '18 at 18:10
Frank van Puffelen
248k31394423
edited Nov 24 '18 at 18:10
Frank van Puffelen
248k31394423
248k31394423
asked Nov 24 '18 at 17:26
JoelJoel
573
asked Nov 24 '18 at 17:26
JoelJoel
573
asked Nov 24 '18 at 17:26
JoelJoel
573
573
add a comment |
add a comment |
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