Relations in query

[michaldev]

I have class "Product" with category (relational) field. I added product and category by Parse dashboard.

but I have problem:
"category":{"__type":"Relation","className":null,"objects":null}}
I search item by query:

var queryProduct = QueryBuilder(ParseObject('Product'))
      ..whereContains('name', text);

[RodrigoSMarques]

Hi @michaldev

What version are you using?

[vonbarnekowa]

Hey!

I have the same issue. I'm running on 1.0.22.

[RodrigoSMarques]

I didn't do tests with relational.
I'll do some tests and return to you

[vonbarnekowa]

Thank you.

[RodrigoSMarques]

Hi guys.
Reading the Parse documentation what I understand is that ParseRelation does not return results in the query.
I also checked the documentation for Android and Java Script.
For Flutter, You need to fetch the relationship objects using

final relation = user.getRelation ('dietPlans');

I did a test and it seems this didn't work in lib.
I will debug and then return the result.

[WahdanZ]

@RodrigoSMarques
in query builder, you should use this
queryBuilder.includeObject(["category"]);

[RodrigoSMarques]

@WahdanZ
include doesn't work with Relations, only with Pointers

parse-community/parse-server#4138
parse-community/parse-server#2850
https://stackoverflow.com/questions/45645985/parse-sdk-android-query-with-relation-using-include-is-not-working

@michaldev and @vonbarnekowa
use whereRelatedTo to retrieve objects in relation, in separated Query.

[vonbarnekowa]

I found another issue. I don't know if they are related to each other. But if you have a relation that contains more than one item, the result will be null. With one or zero items it works.

[ZeroNilZero]

@vonbarnekowa how do you fix that?

I found another issue. I don't know if they are related to each other. But if you have a relation that contains more than one item, the result will be null. With one or zero items it works.

[facuparedes]

Hey, I have same problem:
"messages":{"__type":"Relation","className":null,"objects":null}

Did anyone fix that?

[ZeroNilZero]

this may help #399

[RodrigoSMarques]

We are closing issues that have been open for a long time without activity.
This will make it easier to organize things from now on.
If the problem persists, please open a new issue.
Thanks.