CODEWITHSUNDEEP
javascriptfirebasefirebase-realtime-database
Alex Foxleigh
Alex Foxleigh

Reputation: 1964

Firebase: Create a named child reference

I've made a react component which logs each time my cat has been fed. However at the moment it doesn't automatically create a new empty log for each day. I'm trying to add a method to create a new entry at midnight each day but in order for it to work with the existing component i've made, each new entry needs to be named in the 'DD-MM-YYYY' format. Whilst I can rework the component to not use that, it's handy at a glance when I go into firebase to see the dates a log has been created and would prefer not to change it.

So here is my problem: Whenever I try to do the following, firebase ignores my date format and puts a random key in instead:

this.midnightCheck = () => {
   // If it is midnight, update the state
   if(moment().format('HH:mm') === '00:00') {
     this.dbroot.push(moment().format('DD-MM-YYYY')).child('date').set(moment().format('DD-MM-YYYY'))
   }
}

I've also tried this.dbroot.set() but that doesn't work as it requires the childref to exist first.

Update: I have just tried the following which technically worked but it also overwrote the entire ref instead of just adding a new date to the ref.

this.midnightCheck = () => {
  // If it is midnight, update the state
  if(moment().format('HH:mm') === '18:34') {
    console.info('midnightCheck is updating the state')
    this.dbroot.child(moment().format('DD-MM-YYYY')).set({
      date : moment().format('DD-MM-YYYY'),
      logs : {}
    })
  }
}

Any suggestions?

Upvotes: 0

Views: 118

Answers (1)

Frank van Puffelen
Frank van Puffelen

Reputation: 599776

When you call push(), Firebase writes the data to a new location with an auto-generated push ID.

If you want to determine the name of a new child yourself, call child():

var date = moment().format('DD-MM-YYYY');
this.dbroot.child(date).child('date').set(date)

Upvotes: 1

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