Issue using d.listen about datascript HOT 3 CLOSED

Listeners are all called inside d.transact fn. First it applies a transaction, then swaps conn value, then call all listeners. By the end of d.transact all listeners will already be called. Maybe that’s your issue? How is render fn gets value of actual DB? What’s db1 = d.db(conn); there for?

from datascript.

So I'm probably doing this wrong..
conn and db1 are both defined as variables at the start of the application page.

var d = datascript;
var db1;
var conn;
...

I'm just using db1 as the single database used by the application

conn is set after retrieving schema and initialising:

 conn = d.create_conn(schema);

db1 is set after each transaction:

db1 = d.db(conn);

Render gets value of actual db (db1) directly:

  var data = d.q('query our data here', db1);
  React.render(
    <MyApp data={data} />,
    document.getElementById('content')
  );
}, false);

So in summary I'm viewing conn as something that doesn't change after creating the db, db1 is forced to change after each transaction - and db1 is then used directly for React queries

from datascript.

Yep, you don’t need db1. Just use d.db(conn) where you need latest DB.

from datascript.