Realm-js: Auto increment id?

[jamesaspence]

Hello,

I'm liking Realm so far! I was wondering if auto incremented primary keys or ids would be supported something / is supported already. I didn't see anything in the docs about it.

[kristiandupont]

Hi James,

sorry, we do not support it currently. You can see a discussion of the same request for Java here: https://github.com/realm/realm-java/issues/469

[rajscet]

var ID = realm.objects('Student_Info').length + 1;

[ghorbani-m]

@rajscet
var ID = realm.objects('Student_Info').length + 1;
this code generates duplicate ID if some date removed from the table.

[bmunkholm]

Lookup max value instead and add 1.

[ghorbani-m]

another solution is to use Guid instead int,
each time to create a new record generate new Guid.

[mimoune]

hi, I resolve this issue with this steps :

1. get the last Item in table :
   `_LastItem(){
   queryAllInventory().then((allInventory) => {
   if(allInventory.length==0){
   this.setState({ lastItemId:1 })
   }else{
   let lastItem= allInventory[allInventory.length-1]
   this.setState({ lastItemId: lastItem.id })
   }

   }).catch((error) => {
       this.setState({ error })
   })
   

   }`

2. and i add 1 to last item :
   let insertInventoryObject = { **id: this.state.lastItemId+1,** raison: this.state.chosenRaison, date: this.state.chosenDate, statut: 'Ouvert' }

[Chris533]

    Realm.open({ path: db, schema: [Qa] })
      .then(realm => {
        const results = realm.objects('Qa').sorted('id');
        const id = results.length > 0 ? results[results.length - 1].id + 1 : 1;
        realm.write(() => {
          realm.create('Qa', {...data, id});
        });
        return null;
      })
      .catch(error => {
        console.log(error);
      });

[Chris533]

@rajscet
var ID = realm.objects('Student_Info').length + 1;
this code generates duplicate ID if some date removed from the table.

List ID 1, 2, 3
When delete ID 2
New Id = 3
Realm Creating failed.