Using POSTMAN to POST object with relation to another table using REST API

I’m trying to add a new object to a table where some columns (instructors and class names) have a relation with other tables.

I’m facing some issues with adding a new object that sets the relation (eg. I want to add a schedule item that sets instructor A as the “instructor”, and class name A as the “class name”).

Here’s my JSON body:

    "classStart": 1601298000000,
    "zoomPW": "340073",
    "classEnd": 1601301600000,
    "created": 1599137953000,
    "active": true,
    "capacity": 20,
    "zoomID": "865 7719 5468",
    "classDuration": 60,
    "zoomLink": "",
      "name":"Ashtanga Basics (Livestream)"

Based on Backendless’s documentation and tutorials, it seems like the code above is correct, but somehow, the object created has its instructor and class name fields empty.

So I managed to create an object in the table, but the relation fields return empty.

I’ve followed the tutorial here but doesn’t seem to work for me.

Am I missing something?

Thank you so much in advance :slight_smile:

Hello @Peculiar_Yogi

We apologize for any misunderstanding. The feature described in the article above will appear in the next releases. For now, you can only use the ADD / SET Relation methods:


Hey @Inna_Shkolnaya, so just to clarify: we have to create the object first in the first API call, and in a separate API call, to add/set the relations, yes?


Yes, you are absolutely right.


Alright, thanks for clarifying!

Hi @Peculiar_Yogi, @Inna_Shkolnaya did the solution work for you.

Even after following this, I could not solve the relationship. I am following this link:

Set/Add Relation with objects - Backendless REST API Documentation.

Although the REST API seems to have executed with Success response, but I do not see the relation getting created in Reviews table.

I intended to update the relationship “RestaurantLinked” (1:1 between Reviews and Restaurant tables) for the following record in Reviews Table.

But even after successful execution of the REST API, the relation remains empty! What am I really missing ?

Many thanks in advance :slight_smile:

I have found the mistake, I was using wrong verb, should have used “PUT” and not “GET”.