Simple sorting on GraphQL model

** Which Category is your question related to? ** GraphQL schema

** What AWS Services are you utilizing? ** amplify, appsync, dynamodb

** Provide additional details e.g. code snippets ** Consider this schema:

type Category @model @key(fields: ["seoName"]) {
    seoName: String!
    name: String!
    description: String
    order: Int!
    deleted: Boolean
}

I want to list all my categories ordered by the order field.

If I modify the key as @key(fields: ["seoName", "order"]) and I specify sortDirection in the query, the ordering does not appear to work.

I even tried to add a second @key condition like

type Category @model @key(fields: ["seoName"]) @key(name: "ByOrder", fields: ["seoName", "order"], queryField: "itemsByOrder") {
...
}

But i got an error:

InvalidDirectiveError: Invalid @key "ByOrder". You may not create a @key where the first field in 'fields' is the same as that of the primary @key unless the primary @key has multiple 'fields'. You cannot have a local secondary index without a sort key in the primary index.

I’m rather new to graphql but this is driving me crazy.

[artecoop]

Yo @matt-e-king, as you can see, there are few other people waiting for this answer that, albeit simple, not so straightforward. I found more struggle working on amplify and graphql than with other projects, as I admit I’m pretty new on serverless and grapqhl. Let’s wait an official response.

[matt-e-king]

@artecoop if you are going to declare both your primary key and a secondary index, you have to turn your primary key into a composite primary key by provide a sort key, like this:

type Category @model
    @key(fields: ["seoName", "createdAt"])
    @key(name: "ByOrder", fields: ["seoName", "order"], queryField: "itemsByOrder")
{
    seoName: String!
    createdAt: String!
    name: String!
    description: String
    order: Int!
    deleted: Boolean
}

In the snippet above notice I added “createdAt” as an example.

That said, even after getting getting rid of that error I cannot get a successful simple ordering to work either. I recently submitted this issue detailing my struggles: https://github.com/aws-amplify/amplify-cli/issues/2634

So I guess I’m kind of in the same boat as you still 😃