How can i relations retrieve?

JavaScript
1

Hello!I tried to get relations users from column “Favorite”. I need usersID from this column

Methods from https://backendless.com/documentation/data/js/data_relations_retrieve.htm
But had retrieving only parents objects
Example:

http://api.backendless.com/v1/data/Items/08BEF67E-FDDE-61B6-FF66-25EA83E7B300?loadRelations=Favorite
http://api.backendless.com/v1/data/Items/08BEF67E-FDDE-61B6-FF66-25EA83E7B300

no different;

var dataStore = Backendless.Persistence.of( Items );
var result = dataStore.findFirst();
result = dataStore.loadRelations( result, ["Favorite"] );
console.log(result);

undefined;


	var query = new Backendless.DataQuery();
	query.options = {related:["Favorite"]};
	var resultCollection = Backendless.Persistence.of( Items ).find( query );
	console.log(resultCollection);
//no different

	var data = Backendless.Persistence.of( Items ).find();
	console.log(data);

I expected only objects have objects in “favorite”?

2

This problems troubling me to finish project How can i reverse retrieve, for example:
i need to retrieve all objectId from relation column Items.Favorite from table “User” in parent table “Items”

3

Hi Eugen,

I apologize, I missed your original post. If I understood your question correctly, you need to load only specific property from every object in a related table? Specifically, get objectId for every User object related to a specific Item, is that correct?

Regards,
Mark

4

Hi Mark.

Yes it is
I try with one relation to create “Favorite list”(include “Items”) for every user, and “User list”(include “Users”) for every Item

5

https://backendless.com/users-and-relations-in-java-and-android/
add more JavaScript examples, please

6

Ok, this crazy code help me to find relation:

var resultCollection = Backendless.Persistence.of(Classes.Items).find( { options: {sortBy: 'objectId'}, relations: ['Category']} 
console.log(resultCollection.data[0].Category[1]);

But relation in User table retrieve only “null” but this wrong and column “Create” have objects

var resultCollection = Backendless.Persistence.of(Users).find( { options: {sortBy: 'objectId'}, relations: ['Create']} );
console.log(resultCollection.data[0].Create);