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Relay helpers for GraphQL Elixir

Home Page: http://graphql-elixir.org

License: Other

Elixir 100.00%

graphql_relay's Issues

Fix Elixir 1.3 and other warnings

Some of these will be fixed by graphql-elixir/graphql#89 but there are quite a number of others.

✪ mix test
WARN:  Missing plugins: [pc]
==> esqlite (compile)
Compiled src/esqlite3_nif.erl
Compiled src/esqlite3.erl
Compiling c_src/esqlite3_nif.c
Compiling c_src/queue.c
Compiling c_src/sqlite3.c
c_src/sqlite3.c:9111:26: warning: unused variable 'sqlite3one' [-Wunused-const-variable]
SQLITE_PRIVATE const int sqlite3one = 1;
                         ^
1 warning generated.
==> poolboy (compile)
Compiled src/poolboy_worker.erl
Compiled src/poolboy_sup.erl
Compiled src/poolboy.erl
==> decimal
Compiling 1 file (.ex)
Generated decimal app
==> graphql
Compiling 1 file (.yrl)
Compiling 1 file (.xrl)
Compiling 2 files (.erl)
Compiling 48 files (.ex)
warning: the variable "accumulator" is unsafe as it has been set inside a case/cond/receive/if/&&/||. Please explicitly return the variable value instead. For example:

    case int do
      1 -> atom = :one
      2 -> atom = :two
    end

should be written as

    atom =
      case int do
        1 -> :one
        2 -> :two
      end

Unsafe variable found at:
  lib/graphql/lang/ast/type_info_visitor.ex:149

warning: the variable "accumulator" is unsafe as it has been set inside a case/cond/receive/if/&&/||. Please explicitly return the variable value instead. For example:

    case int do
      1 -> atom = :one
      2 -> atom = :two
    end

should be written as

    atom =
      case int do
        1 -> :one
        2 -> :two
      end

Unsafe variable found at:
  lib/graphql/lang/ast/type_info_visitor.ex:170

warning: the variable "acc" is unsafe as it has been set inside a case/cond/receive/if/&&/||. Please explicitly return the variable value instead. For example:

    case int do
      1 -> atom = :one
      2 -> atom = :two
    end

should be written as

    atom =
      case int do
        1 -> :one
        2 -> :two
      end

Unsafe variable found at:
  lib/graphql/validation/rules/no_fragment_cycles.ex:75

warning: the variable "acc" is unsafe as it has been set inside a case/cond/receive/if/&&/||. Please explicitly return the variable value instead. For example:

    case int do
      1 -> atom = :one
      2 -> atom = :two
    end

should be written as

    atom =
      case int do
        1 -> :one
        2 -> :two
      end

Unsafe variable found at:
  lib/graphql/validation/rules/no_fragment_cycles.ex:75

warning: the variable "accumulator" is unsafe as it has been set inside a case/cond/receive/if/&&/||. Please explicitly return the variable value instead. For example:

    case int do
      1 -> atom = :one
      2 -> atom = :two
    end

should be written as

    atom =
      case int do
        1 -> :one
        2 -> :two
      end

Unsafe variable found at:
  lib/graphql/validation/rules/fields_on_correct_type.ex:27

warning: the variable "message" is unsafe as it has been set inside a case/cond/receive/if/&&/||. Please explicitly return the variable value instead. For example:

    case int do
      1 -> atom = :one
      2 -> atom = :two
    end

should be written as

    atom =
      case int do
        1 -> :one
        2 -> :two
      end

Unsafe variable found at:
  lib/graphql/validation/rules/fields_on_correct_type.ex:91

warning: function GraphQL.Lang.AST.TypeInfo.nullable_type/2 is undefined or private
  lib/graphql/lang/ast/type_info_visitor.ex:126

Generated graphql app
==> poison
Compiling 4 files (.ex)
Generated poison app
==> pipe
Compiling 1 file (.ex)
Generated pipe app
==> ecto
Compiling 73 files (.ex)
warning: function Ecto.Pools.Poolboy.Worker.behaviour_info/1 is undefined or private
  lib/ecto/pools/poolboy/worker.ex:5

warning: function Ecto.Adapters.MySQL.Connection.all/1 is undefined (module Ecto.Adapters.MySQL.Connection is not available)
  lib/ecto/adapters/mysql.ex:85

warning: function Ecto.Adapters.MySQL.Connection.delete/4 is undefined (module Ecto.Adapters.MySQL.Connection is not available)
  lib/ecto/adapters/mysql.ex:85

warning: function Ecto.Adapters.MySQL.Connection.delete_all/1 is undefined (module Ecto.Adapters.MySQL.Connection is not available)
  lib/ecto/adapters/mysql.ex:85

warning: function Ecto.Adapters.MySQL.Connection.execute_ddl/1 is undefined (module Ecto.Adapters.MySQL.Connection is not available)
  lib/ecto/adapters/mysql.ex:85

warning: function Ecto.Adapters.MySQL.Connection.update/5 is undefined (module Ecto.Adapters.MySQL.Connection is not available)
  lib/ecto/adapters/mysql.ex:85

warning: function Ecto.Adapters.MySQL.Connection.update_all/1 is undefined (module Ecto.Adapters.MySQL.Connection is not available)
  lib/ecto/adapters/mysql.ex:85

warning: function Ecto.Adapters.MySQL.Connection.insert/4 is undefined (module Ecto.Adapters.MySQL.Connection is not available)
Found at 2 locations:
  lib/ecto/adapters/mysql.ex:85
  lib/ecto/adapters/mysql.ex:172

warning: function Ecto.Adapters.MySQL.Connection.to_constraints/1 is undefined (module Ecto.Adapters.MySQL.Connection is not available)
  lib/ecto/adapters/mysql.ex:177

warning: function :sbroker.async_ask_r/3 is undefined (module :sbroker is not available)
Found at 2 locations:
  lib/ecto/pools/sojourn_broker/worker.ex:192
  lib/ecto/pools/sojourn_broker/worker.ex:198

warning: function :sbroker.cancel/3 is undefined (module :sbroker is not available)
  lib/ecto/pools/sojourn_broker/worker.ex:260

warning: function :sbroker.await/2 is undefined (module :sbroker is not available)
  lib/ecto/pools/sojourn_broker/worker.ex:261

warning: function :sbroker.ask/2 is undefined (module :sbroker is not available)
  lib/ecto/pools/sojourn_broker.ex:75

warning: function Ecto.Adapters.Postgres.Connection.all/1 is undefined (module Ecto.Adapters.Postgres.Connection is not available)
  lib/ecto/adapters/postgres.ex:56

warning: function Ecto.Adapters.Postgres.Connection.delete/4 is undefined (module Ecto.Adapters.Postgres.Connection is not available)
  lib/ecto/adapters/postgres.ex:56

warning: function Ecto.Adapters.Postgres.Connection.delete_all/1 is undefined (module Ecto.Adapters.Postgres.Connection is not available)
  lib/ecto/adapters/postgres.ex:56

warning: function Ecto.Adapters.Postgres.Connection.execute_ddl/1 is undefined (module Ecto.Adapters.Postgres.Connection is not available)
  lib/ecto/adapters/postgres.ex:56

warning: function Ecto.Adapters.Postgres.Connection.insert/4 is undefined (module Ecto.Adapters.Postgres.Connection is not available)
  lib/ecto/adapters/postgres.ex:56

warning: function Ecto.Adapters.Postgres.Connection.update/5 is undefined (module Ecto.Adapters.Postgres.Connection is not available)
  lib/ecto/adapters/postgres.ex:56

warning: function Ecto.Adapters.Postgres.Connection.update_all/1 is undefined (module Ecto.Adapters.Postgres.Connection is not available)
  lib/ecto/adapters/postgres.ex:56

Generated ecto app
==> sqlitex
Compiling 7 files (.ex)
Generated sqlitex app
==> sqlite_ecto
Compiling 7 files (.ex)
warning: the variable "args" is unsafe as it has been set inside a case/cond/receive/if/&&/||. Please explicitly return the variable value instead. For example:

    case int do
      1 -> atom = :one
      2 -> atom = :two
    end

should be written as

    atom =
      case int do
        1 -> :one
        2 -> :two
      end

Unsafe variable found at:
  lib/sqlite_ecto/query.ex:357

warning: the variable "args" is unsafe as it has been set inside a case/cond/receive/if/&&/||. Please explicitly return the variable value instead. For example:

    case int do
      1 -> atom = :one
      2 -> atom = :two
    end

should be written as

    atom =
      case int do
        1 -> :one
        2 -> :two
      end

Unsafe variable found at:
  lib/sqlite_ecto/query.ex:363

Generated sqlite_ecto app
==> graphql_relay
Compiling 6 files (.ex)
warning: the variable "end_offset" is unsafe as it has been set inside a case/cond/receive/if/&&/||. Please explicitly return the variable value instead. For example:

    case int do
      1 -> atom = :one
      2 -> atom = :two
    end

should be written as

    atom =
      case int do
        1 -> :one
        2 -> :two
      end

Unsafe variable found at:
  lib/graphql/relay/connection/list.ex:32

warning: the variable "start_offset" is unsafe as it has been set inside a case/cond/receive/if/&&/||. Please explicitly return the variable value instead. For example:

    case int do
      1 -> atom = :one
      2 -> atom = :two
    end

should be written as

    atom =
      case int do
        1 -> :one
        2 -> :two
      end

Unsafe variable found at:
  lib/graphql/relay/connection/list.ex:35

warning: the variable "end_offset" is unsafe as it has been set inside a case/cond/receive/if/&&/||. Please explicitly return the variable value instead. For example:

    case int do
      1 -> atom = :one
      2 -> atom = :two
    end

should be written as

    atom =
      case int do
        1 -> :one
        2 -> :two
      end

Unsafe variable found at:
  lib/graphql/relay/connection/list.ex:36

warning: the variable "start_offset" is unsafe as it has been set inside a case/cond/receive/if/&&/||. Please explicitly return the variable value instead. For example:

    case int do
      1 -> atom = :one
      2 -> atom = :two
    end

should be written as

    atom =
      case int do
        1 -> :one
        2 -> :two
      end

Unsafe variable found at:
  lib/graphql/relay/connection/list.ex:43

warning: the variable "start_offset" is unsafe as it has been set inside a case/cond/receive/if/&&/||. Please explicitly return the variable value instead. For example:

    case int do
      1 -> atom = :one
      2 -> atom = :two
    end

should be written as

    atom =
      case int do
        1 -> :one
        2 -> :two
      end

Unsafe variable found at:
  lib/graphql/relay/connection/list.ex:55

warning: the variable "end_offset" is unsafe as it has been set inside a case/cond/receive/if/&&/||. Please explicitly return the variable value instead. For example:

    case int do
      1 -> atom = :one
      2 -> atom = :two
    end

should be written as

    atom =
      case int do
        1 -> :one
        2 -> :two
      end

Unsafe variable found at:
  lib/graphql/relay/connection/list.ex:56

warning: the variable "query" is unsafe as it has been set inside a case/cond/receive/if/&&/||. Please explicitly return the variable value instead. For example:

    case int do
      1 -> atom = :one
      2 -> atom = :two
    end

should be written as

    atom =
      case int do
        1 -> :one
        2 -> :two
      end

Unsafe variable found at:
  lib/graphql/relay/connection/ecto.ex:24

warning: the variable "query" is unsafe as it has been set inside a case/cond/receive/if/&&/||. Please explicitly return the variable value instead. For example:

    case int do
      1 -> atom = :one
      2 -> atom = :two
    end

should be written as

    atom =
      case int do
        1 -> :one
        2 -> :two
      end

Unsafe variable found at:
  lib/graphql/relay/connection/ecto.ex:33

warning: the variable "query" is unsafe as it has been set inside a case/cond/receive/if/&&/||. Please explicitly return the variable value instead. For example:

    case int do
      1 -> atom = :one
      2 -> atom = :two
    end

should be written as

    atom =
      case int do
        1 -> :one
        2 -> :two
      end

Unsafe variable found at:
  lib/graphql/relay/connection/ecto.ex:42

warning: the variable "query" is unsafe as it has been set inside a case/cond/receive/if/&&/||. Please explicitly return the variable value instead. For example:

    case int do
      1 -> atom = :one
      2 -> atom = :two
    end

should be written as

    atom =
      case int do
        1 -> :one
        2 -> :two
      end

Unsafe variable found at:
  lib/graphql/relay/connection/ecto.ex:48

warning: the variable "query" is unsafe as it has been set inside a case/cond/receive/if/&&/||. Please explicitly return the variable value instead. For example:

    case int do
      1 -> atom = :one
      2 -> atom = :two
    end

should be written as

    atom =
      case int do
        1 -> :one
        2 -> :two
      end

Unsafe variable found at:
  lib/graphql/relay/connection/ecto.ex:54

warning: the variable "query" is unsafe as it has been set inside a case/cond/receive/if/&&/||. Please explicitly return the variable value instead. For example:

    case int do
      1 -> atom = :one
      2 -> atom = :two
    end

should be written as

    atom =
      case int do
        1 -> :one
        2 -> :two
      end

Unsafe variable found at:
  lib/graphql/relay/connection/ecto.ex:59

warning: the variable "has_prev_page" is unsafe as it has been set inside a case/cond/receive/if/&&/||. Please explicitly return the variable value instead. For example:

    case int do
      1 -> atom = :one
      2 -> atom = :two
    end

should be written as

    atom =
      case int do
        1 -> :one
        2 -> :two
      end

Unsafe variable found at:
  lib/graphql/relay/connection/ecto.ex:83

warning: the variable "has_next_page" is unsafe as it has been set inside a case/cond/receive/if/&&/||. Please explicitly return the variable value instead. For example:

    case int do
      1 -> atom = :one
      2 -> atom = :two
    end

should be written as

    atom =
      case int do
        1 -> :one
        2 -> :two
      end

Unsafe variable found at:
  lib/graphql/relay/connection/ecto.ex:84

Generated graphql_relay app
Excluding tags: [:skip]

..................................................................................

Finished in 0.6 seconds
83 tests, 0 failures, 1 skipped

Randomized with seed 341524

Docs on how to setup Phoenix app to reload schema.json file whenever schema related file changes

It should be possible to watch the dir(s) that contain your GraphQL schema files and have a change trigger the recreation of the schema.json file automatically. Right now you can manually generate a schema.json file by running: mix run GraphQL.Relay.generate_schema_json from your Phoenix project's root directory (after you've setup some config vars).

I was hoping to find a Phoenix configuration where you can define a function to be run whenever a local file has changed. I have yet to dive into Phoenix's reloading functionality, but am aware of phoenix_live_reload's use of :fs.subscribe().

GraphiQL IDE

Upgrading to phoenix 1.2 causes error in node_interface

== Compilation error on file web/router.ex ==
** (ArgumentError) cannot escape #Function<1.97113962/1 in App.PublicSchema.node_interface/0>. The supported values are: lists, tuples, maps, atoms, numbers, bitstrings, pids and remote functions in the format &Mod.fun/arity
    (elixir) src/elixir_quote.erl:119: :elixir_quote.argument_error/1
    (elixir) src/elixir_quote.erl:246: :elixir_quote.do_quote/3
    (elixir) src/elixir_quote.erl:382: :elixir_quote.do_splice/5
    (elixir) src/elixir_quote.erl:259: :elixir_quote.do_quote/3
    (elixir) src/elixir_quote.erl:246: :elixir_quote.do_quote/3
    (elixir) src/elixir_quote.erl:382: :elixir_quote.do_splice/5
    (elixir) src/elixir_quote.erl:259: :elixir_quote.do_quote/3
    (elixir) src/elixir_quote.erl:246: :elixir_quote.do_quote/3
    (elixir) src/elixir_quote.erl:382: :elixir_quote.do_splice/5
    (elixir) src/elixir_quote.erl:259: :elixir_quote.do_quote/3
    (elixir) src/elixir_quote.erl:246: :elixir_quote.do_quote/3
    (elixir) src/elixir_quote.erl:382: :elixir_quote.do_splice/5
    (elixir) src/elixir_quote.erl:259: :elixir_quote.do_quote/3
    (elixir) src/elixir_quote.erl:246: :elixir_quote.do_quote/3
    (elixir) src/elixir_quote.erl:382: :elixir_quote.do_splice/5
    (elixir) src/elixir_quote.erl:259: :elixir_quote.do_quote/3
    (elixir) src/elixir_quote.erl:246: :elixir_quote.do_quote/3
    (elixir) src/elixir_quote.erl:382: :elixir_quote.do_splice/5
    (elixir) src/elixir_quote.erl:141: :elixir_quote.escape/2
    (elixir) lib/macro.ex:312: Macro.escape/2

  scope "/graphql" do
    pipe_through :api
    forward "/", GraphQL.Plug, schema: {App.PublicSchema, :schema}
  end

  def node_interface do
    Node.define_interface(fn(obj) ->
      case obj do
        %{start_unix_timestamp: _ } ->
          App.Event.Type
        %{comments: _, full_text: _} ->
          App.Article.Type
        %{members: _} ->
            App.Group.Type
        %{email: _, name: _} ->
          App.User.Type
        %{replys: _} ->
          App.Comments.Type
      end
    end)
  end

Introspect Ecto Connection order field and direction from query

We recently updated the API for Ecto Connections to accept arguments for sorting the connection by adding ordered_by and ordered_by_direction arguments. This works if you want to sort by the Connection's underlying table, but not if you want to sort by a joined table.

Thinking on this it became clear that we can simply look to see if the passed in Ecto query has an order_by clause from which we can then derive the sort field and direction. We don't need separate ordered_by and ordered_by_direction arguments. Just introspect the query.

No such type: `GraphQL.Type.Input`

I currently get the following error:

== Compilation error on file lib/graphql/relay/mutation.ex ==
** (CompileError) lib/graphql/relay/mutation.ex:35: GraphQL.Type.Input.__struct__/0 is undefined, cannot expand struct GraphQL.
Type.Input
    (elixir) src/elixir_map.erl:58: :elixir_map.translate_struct/4

could not compile dependency :graphql_relay, "mix compile" failed. You can recompile this dependency with "mix deps.compile gra
phql_relay", update it with "mix deps.update graphql_relay" or clean it with "mix deps.clean graphql_relay"

Mutation Input variables are not making it to resolve functions

It looks like graphql-elixir isn't parsing variables properly for Relay mutations. It receives the correct variables to the execute function, but they don't make it to the resolve functions. This may be due to the input: vs "input" (atom vs string) issue.

Move Connection.Ecto support to separate package, `graphql_relay_ecto`

In order to provide support for Connections backed by both Ecto v1.x or v2.x we should move Connection.Ecto out into its own package where we can have both 1.x and 2.x versions.

#18

snake_case CamelCase Adapter

It would be great to be able to use snake_case in Elixir-land and CamelCase in Javascript-land. See http://absinthe-graphql.org/guides/adapters/ for an example.

integration with Absinthe Ecto (assoc)

Hi,

Is there any way to use Absinthe Ecto assoc or something similar?

Best,
Jhonathas

How to define edges

For example in the todo relay example: https://github.com/facebook/relay/blob/master/examples/todo/data/schema.js#L140-L149
https://github.com/facebook/relay/blob/master/examples/todo/js/mutations/AddTodoMutation.js

Is this possible yet?

Come up with proper solution for keys being strings or atoms

In practice, clientMutationID is null on mutation responses due to the code expecting an atom key but receiving a string key.

I've updated the codebase to check for both but this "dirtiness" is not acceptable.

https://github.com/graphql-elixir/graphql-relay-elixir/blob/master/lib/graphql/relay/mutation.ex#L49

Include the schema gen mix task

The mix task described in here should be part of the Relay library:

https://github.com/graphql-elixir/graphql_relay/wiki/Setup-Phoenix-app-to-reload-schema.json-file-whenever-GraphQL-schema-files-change

Recursive schema definition causing issues with `GraphQL.Relay.generate_schema_json!`

I'm not sure whether this is an issue with graphql-elixir or graphql-relay?

graphql-elixir/graphql#38 (comment)

Unknown plugin "babel-plugin-babel-relay-plugin-loader" specified

I get the following error when starting the example app included in this repo. I looked in the brunch-config.js and other js files, but couldn't find where it specifies the plugin location as the error message suggests.

Unknown plugin "todo/node_modules/babel-plugin-babel-relay-plugin-loader" specified in "base" at 0, attempted to resolve relative to "web/static/js".

Can you please take a look?

Update README, and/or docs, to explain the root query "issue"

facebook/relay#112

could not find repositories for application :todo.

Getting the following error. What am I missing?

bash-3.2$ mix ecto.create && mix ecto.migrate                                                                                                                                                               
warning: could not find repositories for application :todo.                                                                                                                                                 

You can avoid this warning by passing the -r flag or by setting the                                                                                                                                         
repositories managed by this application in your config/config.exs:                                                                                                                                         

    config :todo, ecto_repos: [...]                                                                                                                                                                         

The configuration may be an empty list if it does not define any repo.

Come up with a solution for auto-generating the schema.json file Relay requires

https://facebook.github.io/relay/docs/guides-babel-plugin.html#schema-json

TodoMVC Example: Text not loading on page load

Turns out it's likely an issue in graphql-elixir as the same query, with different ordering of fields, returns different results.

First is the failing query, second is the successful query pulled from the React/Relay Chrome Plugin. They are both the same except for different ordering of fields.

query ViewerQueries {
  viewer {
    id,
    ...F8
  }
} 

fragment F0 on Todo {
  id
}

fragment F1 on Todo {
  complete,
  id
} 

fragment F2 on Todo {
  complete,
  id,
  text,
  ...F0,
  ...F1
}

fragment F3 on TodoConnection {
  edges {
    node {
      complete,
      id
    },
    cursor
  },
  pageInfo {
    hasNextPage,
    hasPreviousPage
  }
}

fragment F4 on User {
  id,
  totalCount
} 

fragment F5 on User {
  id,
  completedCount
}

fragment F6 on User {
  completedCount,
  id,
  totalCount
}

fragment F7 on User {
  id,
  ...F5,
  ...F6
}

fragment F8 on User { 
  completedCount,
  _todos2Z9A4r:todos(status:"any",first:2147483647) { 
    edges {
      node {
        id,
        ...F2
      },
      cursor
    },
    pageInfo {
      hasNextPage,
      hasPreviousPage
    },
    ...F3
  },
  totalCount,
  id,
  ...F4,
  ...F7
}

query ViewerQueries {
  viewer {
    ...F8,
    id
  }
}

fragment F0 on Todo {
  id
}

fragment F1 on Todo {
  complete,
  id
}

fragment F2 on Todo {
  ...F0,
  ...F1,
  complete,
  id,
  text
}

fragment F3 on TodoConnection {
  edges {
    cursor,
    node {
      complete,
      id
    }
  },
  pageInfo {
    hasNextPage,
    hasPreviousPage
  }
}

fragment F4 on User {
  id,
  totalCount
}

fragment F5 on User {
  completedCount,
  id
}

fragment F6 on User {
  completedCount,
  id,
  totalCount
}

fragment F7 on User {
  ...F5,
  ...F6,
  id
}

fragment F8 on User {
  ...F4,
  ...F7,
  _todos2Z9A4r:todos(status:"any",first:2147483647) {
    ...F3,
    edges {
      cursor,
      node {
        ...F2,
        id
      }
    },
    pageInfo {
      hasNextPage,
      hasPreviousPage
    }
  },
  completedCount,
  id,
  totalCount
}

Mutation.ex won't compile in Elixir 1.3

It appears Elixir 1.3 doesn't work with the anonymous function in GraphQL.Relay.Mutation.new/1.

== Compilation error on file web/router.ex ==
** (ArgumentError) cannot escape #Function<0.44923427/3 in GraphQL.Relay.Mutation.new/1>. The supported values are: lists, tuples, maps, atoms, numbers, bitstrings, pids and remote functions in the format &Mod.fun/arity

I confirmed this works in Elixir 1.2.4 and Phoenix 1.1.4.

web/router.ex

#…
scope "/q" do
  forward "/", GraphQL.Plug, schema: {GraphQLTest.Root, :schema}
end
#…

web/graphql/root.ex

defmodule GraphQLTest.Root do

  alias GraphQL.Relay.Mutation

  def schema do
    %GraphQL.Schema{
      query: %GraphQL.Type.ObjectType{
        name: "Query",
        fields: %{
          greeting: %{
            type: %GraphQL.Type.String{},
            resolve: &GraphQLTest.Root.greeting/3,
          },
        }
      },
      mutation: %GraphQL.Type.ObjectType{
        name: "Mutation",
        fields: %{
          addUser: Mutation.new(%{
            name: "addUser",
            input_fields: %{
              name: %{type: %GraphQL.Type.String{}},
            },
            output_fields: %{
              name: %{type: %GraphQL.Type.String{}},
            },
            mutate_and_get_payload: &GraphQLTest.Root.mutate_and_get_payload/2,
          })
        }
      }
    }
  end

  def mutate_and_get_payload(input, info), do: %{name: "Hello #{input["name"]}"}
  def greeting(_, _, _), do: %{name: "Hello world"}
end

I don't have any great ideas for a solution. My current workaround is to include most of the Mutation.ex code directly in my own file so I can avoid the anonymous function. I'm still a bit of an Elixir beginner so would love to learn a true Elixir way to fix this.

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