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RethinkDB: Get last N from an object


RethinkDB: Get last N from an object

By : Neha Rathore
Date : November 26 2020, 09:01 AM
fixed the issue. Will look into that further If you want the last n, I would write obj.coerceTo('array').slice(-n).coerceTo('object'). (Objects in RethinkDB implicitly sort their fields by the key.) If you want the first n, I'd write .slice(0, n) instead of .slice(-n).
code :


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Using $this when not in object context RethinkDB time object

Using $this when not in object context RethinkDB time object


By : Marina
Date : March 29 2020, 07:55 AM
hop of those help? I'm trying to convert an object that holds a rethinkdb datetime object (provided by the PHP-RQL library) but i'm getting a fatal error saying: , The error message
Rethinkdb: returning more than one object from a query

Rethinkdb: returning more than one object from a query


By : Michael Oberlauder
Date : March 29 2020, 07:55 AM
I wish did fix the issue. You can combine two queries by writing something like r.expr([query1, query2]) and it should work.
RethinkDB filtering Object Array

RethinkDB filtering Object Array


By : Selim Colakoglu
Date : March 29 2020, 07:55 AM
it should still fix some issue I'm new to rethinkdb and I wanted to filter something like... get all with Kiwi or Strawberry as preferred fruit , This is what you're looking for:
code :
r.db('appname').table('food')
  .filter((row) => { 
    r.or( // Returns true if any of the following are true
      row('fruits')('preferred').contains('Kiwi'),
      row('fruits')('preferred').contains('Strawberry')
    )   
  });
r.db("appname").table('food')
  .filter((row) => {
    return row('fruits')('preferred').setIntersection(['Kiwi', 'Strawberry']).count().gt(0) 
  })
rethinkdb changesfeed in express with socket.io displaying [object object]

rethinkdb changesfeed in express with socket.io displaying [object object]


By : Krishnaprakash Kasth
Date : March 29 2020, 07:55 AM
To fix this issue I'm using express.js, rethinkdb, thinky, socket.io. Trying to notify the index page of any changes that happens in the db. So I use rethinkdb changesfeed (and I can see the updates in console.log) but the cursor/feed is showing object object instead of the data. , From your code:
code :
console.log(item);
//if (item && item.new_val)
socket.emit("message-from-server", { greeting: item });
Why can't I append an object to an array in rethinkdb?

Why can't I append an object to an array in rethinkdb?


By : Karl-Henrik Söderqvi
Date : March 29 2020, 07:55 AM
hope this fix your issue You need to update document with a document not an array. Your reql should look like this
code :
rethink.table('shifts')
  .get(shiftId)
  .update({
    milestones: rethink.row('milestones').append({
      dateAchieved: "2017-01-01",
      phaseType: "TEST"
    })
  })
  .run(rethinkConnection)
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