One to Many Moralis objects

Moralis General
#1

I canā€™t figure out how to save my child obj to parent.
I have Parent obj, Parent has many child.
I checked a lot of examples, I used EF core in.net before, So I thought itā€™s something similar.
How can I insert a child object into a Parent? Can anyone share react code with me?
For example, Parent has objectId, TokenList what is relational to child.
Child has TokenId, Description.

#2

You can find an example here https://v1docs.moralis.io/moralis-dapp/database/objects#many-to-many-relationships

You can use relation in that case and using relation.add() to add more children to the parent relation

#3

Sorry, I didnā€™t get how it should work.
So does it mean if my Parent has a pointer to _User. Parent has relation to Children.
code would look like
const user = Moralis.User.current();
const relation = user.relation(ā€œParentā€);
relation.add(children)
user.save();
???
Only one example in the documentation, itā€™s hard for me to figure outā€¦

#4

Where children here is an Object ( ParseObject )

#5

Sorry I canā€™t understand you.If my example above is right , Iā€™m totally confused.
If I have objectId of Parent, Why do I need to query user?
Can I add Children to parent only based on objectId of Parent?

#6

For example, I used UI dashboard to achieve that without code.
I created 2 childs , and I canā€™t attach them to Parent

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#7

For that forEach error, hard refreshing the page should work.

#8

Can I schedule a call with someone from the Moralis team, to show and receive any help for my products, Cuz I used your solution and Iā€™ve thoughts that development would be faster, but it doesnā€™t look like so ,for now.

#9

I wonā€™t give up. Iā€™ll place my solution here when it succeeds

#10

About UI dashboard, bug exists. If I go to the relation row via a dashboard, I canā€™t see any records. When I refreshed the page, records appears. Where I can report the bug?

#11

Hey mate, okay I got it. I successfully created child in parent.
I donā€™t need user. Actually I can query all relations by entity which has relation type.
Would be cool to see more examples in docs, cuz itā€™s rly simple but Iā€™ve spent 2 days for it.
Can I query all child data that are link to Parent?

#12

Or do I need to select all childs which have Parents equal to objId?

#13

You can query Parent, get the child relation, and .query on the realtion should return the children

#14

Can you, please, provide an example?

#15

For example you have a post with a comment realtion holding many comments, you can get the comment from the relation in such way.

const Post = Moralis.Object.extend("Post");
const postQuery = new Moralis.Query(Post);
let post = await postQuery.first()  // Get first Post

// Comment Relation on Post
const commentRelation = post.relation("comment")
const commentsQuery = commentRelation.query()
const commentsInRelation = await commentsQuery.find()
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