Error in pluralization GraphQL Transform code or codegen

[sebsto]

Describe the bug

Hello team,

I am following instructions provided by the Amplify iOS tutorial here

I am running into a strange error with the GraphQL API.

This call in the iOS app
Amplify.API.query(request: .list(NoteData.self)) { event in ...
causes this error
error GraphQL service returned a successful response containing errors: [Amplify.GraphQLError(message: "Validation error of type FieldUndefined: Field \'listNoteDatas\' in type \'Query\' is undefined @ \'listNoteDatas\'", locations: Optional([Amplify.GraphQLError.Location(line: 2, column: 3)]), path: nil, extensions: nil)]

Notice the listNoteDatas has an extra “s” at the end. The query, as seen from AppSync console, does not have that and
it works in the console.

query MyQuery {
  listNoteData {
    items {
      createdAt
      description
      id
      image
      name
      owner
      updatedAt
    }
  }
}

The schema is

type NoteData
@model
@auth (rules: [ { allow: owner } ]) {
    id: ID!
    name: String!
    description: String
    image: String
}

I am testing with Amplify CLI 6.1.0 on macOS
I think this is a regression from Amplify 5.x

Amplify API Plugin 1.14.0

Steps To Reproduce

Steps to reproduce the behavior:

1. Create an API with schema

type NoteData
@model
@auth (rules: [ { allow: owner } ]) {
    id: ID!
    name: String!
    description: String
    image: String
}

2. Write a function to query all notes

Amplify.API.query(request: .list(NoteData.self)) { event in ...

3. Build and Run

Expected behavior

The query should return all notes

Amplify Framework Version

1.14.0

Amplify Categories

API

Dependency manager

Cocoapods

Swift version

5.5

CLI version

6.1.0

Xcode version

13

Relevant log output

error  GraphQL service returned a successful response containing errors: [Amplify.GraphQLError(message: "Validation error of type FieldUndefined: Field \'listNoteDatas\' in type \'Query\' is undefined @ \'listNoteDatas\'", locations: Optional([Amplify.GraphQLError.Location(line: 2, column: 3)]), path: nil, extensions: nil)]

Is this a regression? (i.e. was this working before a version upgrade)

Yes.

Device

iOS Simulator

iOS Version

15

Specific to simulators

No response

Additional context

No response

[lawmicha]

Hi @sebsto, thanks for opening this issue. It looks like the library is not compatible with the latest Amplify CLI provisioning of the list query. The investigation can be followed here: aws-amplify/amplify-cli#8350 The workaround right now may be to downgrade to use the provisioning done by the CLI before 5.0.2 which will generate a different list query name that the library is aligned on.

[sebsto]

my workaround at the moment is to comment out the .pluralize()call at line 19 here
https://github.com/aws-amplify/amplify-ios/blob/v1.14.0/AmplifyPlugins/Core/AWSPluginsCore/Model/Support/ModelSchema%2BGraphQL.swift#L19

[lawmicha]

An easier way to bypass this is to set the feature flag to false

The feature flag to turn off this pluralization is features.graphqltransformer.improvepluralization in your project's amplify/cli.json file.

aws-amplify/amplify-cli#8350 (comment)

[lawmicha]

related: #1451

[lawmicha]

• fix: Support new list name pluralization #1451 library changes have to be released in 1.15.4
• codegen changes have to be released Feature: Use improved pluralization amplify-codegen#255
  then developer needs to ugprade to the latest CLI and improvePluralization feature can be turned on

[lawmicha]

Please track #3135

[lawmicha]

Please use Amplify CLI 12.4.0 or greater to get the fix for the pluralization issue