Firestore.js

firestore.js

// Final expectation : being able to reference items in subcollections and retrieve
// them without duplicating them in the subcollection, by simply querying the parents subcollection

// Those two works ok
var docRef = db.collection('users').doc('alovelace');
var setAda = docRef.set({
  first: 'Ada',
  last: 'Lovelace',
  born: 1815
});
var docRef = db.collection('items').doc('demo_item');
var setAda = docRef.set({
  title: 'ok',
  content: 'small desc.',
  position: {
    x: 0,
    y: 10,
    w: 100,
    h: 200
  }
});

// Expected : having an entry in the items subcollecitons (users/alovelace/items/[demo_item] ?)
// Result : nothing in users/alovelace/items/
var ref = db.collection('users').doc('alovelace').collection('items').doc('demo_item');
// I don't get anything with the above command

// I see you can pass an object as below :
var ref = db.collection('users').doc('alovelace').collection('items').doc({ref: 'demo_item'});
// But it does not help at all, as I'd have to query again to get the 'demo_item' ref