CODEWITHSUNDEEP
amazon-web-servicesgraphqlmany-to-manyaws-amplify
scalderon
scalderon

Reputation: 95

AWS Amplify many-to-many - delete not working

I have a many-to-many relationship in amplify with the following schema

type Blog 
@model 
@searchable 
{
  id: ID!
  title: String!
  tags: [BlogTag] @connection(keyName: "byBlog", fields: ["id"])
}

type Tag 
@model 
@searchable
{
  id: ID!
  name: String!
  blogs: [BlogTag] @connection(keyName: "byTag", fields: ["id"])
}

type BlogTag 
@model 
@key(name: "byBlog", fields: ["blogID", "tagID"]) 
@key(name: "byTag", fields: ["tagID", "blogID"]) 
{
  id: ID!
  blogID: ID!
  tagID: ID!
  blog: Blog! @connection(fields: ["blogID"])
  tag: Tag! @connection(fields: ["tagID"])
}

And when I try to delete a BlogTag entry, I get the following error:

message: "Conflict resolver rejects mutation."
path: ["deleteBlogTag"]

I try to delete the entry with the following code:

import { API } from "aws-amplify";
import {deleteBlogTag} from "../graphql/mutations";

...
await API.graphql({
      query: deleteBlogTag,
      variables: { input: { id: blogTagId } },
    });

I don't understand why there would be a conflict. If I were deleting a blog, and there'd be BlogTags pointing to that blog, then of course that's a conflict. But why is it a conflict deleting a BlogTag? Is it something I am missing in the schema?

Upvotes: 0

Views: 1144

Answers (1)

Art Jabkiewicz
Art Jabkiewicz

Reputation: 21

You need to provide _version parameter, i.e

await API.graphql({
      query: deleteBlogTag,
      variables: { input: { id: blogTagId, _version: version } },
      });

But I would suggest to go through amplify update api and remove sync conflict resolution.

Upvotes: 1

Related Questions