Check if a key is in gun.js

Question

For example, before I put something in the database I want to check if that entry is already there. I try to do this:

gun.get('demograph').once((data, key) => {
  console.log("realtime updates 1:", data);
});

but I didn't get a response if 'demograph' is or not in the database( for example to get true or false) I just get the result.

I also tried to use .not from extensible API but I is not working. Anyone has any idea how to check if an entry is already in the database?

Public space, like in your example, can be overwritten by anyone. You probably want to use user space instead. — Dshiz, Jun 01 '22 at 00:59

score 2 · Accepted Answer · answered Mar 09 '22 at 00:25

I'm not a user of Gun but from what I see in the doc https://gun.eco/docs/API#-a-name-get-a-gun-get-key- get allows a second argument callback where you can test for not found

gun.get(key, function(ack){
  if(ack.err){
    server.log(error)
  } else
  if(!ack.put){
    // not found
  } else {
    // data!
  }
})

1 Answers1