How do I delete and/or move data in firebase once some time has completed

Question

My app allows users to post and sign up for different events that occur in the future. I'm stuck on finding a way to delete a certain event once it has completed. For example, a user creates an event that starts on October 8th and ends on October 10th. Once October 10th passes, I want the database to move or delete the event. I have no idea whether this is done with server-side code or with code within the app.

Answer 1

There is currently no way to trigger some action based on the passage of a point in time. Your best option is to create a cron-like job that invokes a Cloud Function that periodically searches for and cleans up expired data.

Read this blog for more info, and see this sample code.

Answer 2

On method is a scheduled job that essentially does:

delete from t
    where date 'now' > end_date;

I would vote for actually setting a flag on the event or moving it to another table -- deleting history always seems dangerous to me.

Answer 3

I have done something similar but in another way. U can try this. Actually, it is not an automated process. someone have to call or data when data arrived i checked the time and did this

//Moving to new url
            FirebaseDatabase.getInstance().getReference().child("newUrl")
                    .setValue(DATA);

            //Deleting from current url
            FirebaseDatabase.getInstance().getReference().child("oldUrl")
                    .child("keyOfYourData")
                    .removeValue();

did this before populating the data. hope in this way your job will be done.