Unable to create many-to-many relationship with self-related model

[matthieunelmes]

Describe the bug
As many-to-many relationships are not natively supported with Amplify annotated graphql connections, I've managed to create my own with the solution listed #91 (comment)

My issue is I would like to create a many-to-many relationship with a self-related model.
For instance, a User who has multiple friends which are of the type User.

Using the connection annotation, I would expect to be able to use something like:

type User @model{
    id:ID!
    name:
    friends: [UserFriend] @connection(name: "UserFriends")
}

type UserFriend @model{
    id: ID!
    user: User @connection(name: "UserFriends")
}

This compiles the graphQL schema without error, but when pushing to Amplify this throws
Only one resolver is allowed per field.

[matthieunelmes]

Turns out this schema works fine, my issue was with old resolvers not being deleted with tables. So it was a situation where an orphaned resolver was re-attaching to what I presumed to be a newly created table. Then when I tried to re-connect with the @connection annotation, a resolver was already in place, hence the error.

This is linked to #682

[github-actions]

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