Aryan Iyappan Posts - Answer Overflow

Aryan Iyappan

•Created by Aryan Iyappan on 6/28/2024 in #🤔questions

relay.GlobalID naming issue?

type CreateTodoPayload {
  todoEdge: TodoEdge!
}

"""Date with time (isoformat)"""
scalar DateTime

type DeleteTodoPayload {
  deletedTodoId: GlobalID
}

"""
The `ID` scalar type represents a unique identifier, often used to refetch an object or as key for a cache. The ID type appears in a JSON response as a String; however, it is not intended to be human-readable. When expected as an input type, any string (such as `"4"`) or integer (such as `4`) input value will be accepted as an ID.
"""
scalar GlobalID @specifiedBy(url: "https://relay.dev/graphql/objectidentification.htm")

type Mutation {
  """Create a new todo."""
  createTodo(
    """The content of the todo."""
    content: String!
  ): CreateTodoPayload!

  """Delete a todo by ID."""
  deleteTodo(
    """The ID of the todo to delete."""
    todoId: GlobalID!
  ): DeleteTodoPayload!
}

"""An object with a Globally Unique ID"""
interface Node {
  """The Globally Unique ID of this object"""
  id: GlobalID!
}

"""Information to aid in pagination."""
type PageInfo {
  """When paginating forwards, are there more items?"""
  hasNextPage: Boolean!

  """When paginating backwards, are there more items?"""
  hasPreviousPage: Boolean!

  """When paginating backwards, the cursor to continue."""
  startCursor: String

  """When paginating forwards, the cursor to continue."""
  endCursor: String
}

type Query {
  node(
    """The ID of the object."""
    id: GlobalID!
  ): Node!

  """Get all todos available."""
  todos(before: String = null, after: String = null, first: Int = null, last: Int = null): TodoConnection!
}

type CreateTodoPayload {
  todoEdge: TodoEdge!
}

"""Date with time (isoformat)"""
scalar DateTime

type DeleteTodoPayload {
  deletedTodoId: GlobalID
}

"""
The `ID` scalar type represents a unique identifier, often used to refetch an object or as key for a cache. The ID type appears in a JSON response as a String; however, it is not intended to be human-readable. When expected as an input type, any string (such as `"4"`) or integer (such as `4`) input value will be accepted as an ID.
"""
scalar GlobalID @specifiedBy(url: "https://relay.dev/graphql/objectidentification.htm")

type Mutation {
  """Create a new todo."""
  createTodo(
    """The content of the todo."""
    content: String!
  ): CreateTodoPayload!

  """Delete a todo by ID."""
  deleteTodo(
    """The ID of the todo to delete."""
    todoId: GlobalID!
  ): DeleteTodoPayload!
}

"""An object with a Globally Unique ID"""
interface Node {
  """The Globally Unique ID of this object"""
  id: GlobalID!
}

"""Information to aid in pagination."""
type PageInfo {
  """When paginating forwards, are there more items?"""
  hasNextPage: Boolean!

  """When paginating backwards, are there more items?"""
  hasPreviousPage: Boolean!

  """When paginating backwards, the cursor to continue."""
  startCursor: String

  """When paginating forwards, the cursor to continue."""
  endCursor: String
}

type Query {
  node(
    """The ID of the object."""
    id: GlobalID!
  ): Node!

  """Get all todos available."""
  todos(before: String = null, after: String = null, first: Int = null, last: Int = null): TodoConnection!
}

29 replies

SGStrawberry GraphQL

•Created by Aryan Iyappan on 6/27/2024 in #🤔questions

Should I use dataloaders in relay.Node.resolve_nodes?

I've got a node type like this:

@strawberry.type(name="Todo")
class TodoType(BaseNodeType):
    content: str
    completed: bool
    created_at: datetime
    updated_at: datetime | None

    @classmethod
    def from_orm(cls, todo: Todo) -> Self:
        """Construct a node from an ORM instance."""
        return cls(
            id=todo.id,
            content=todo.content,
            completed=todo.completed,
            created_at=todo.created_at,
            updated_at=todo.updated_at,
        )

    @classmethod
    async def resolve_nodes(  # noqa: ANN206
        cls,
        *,
        info: Info,
        node_ids: Iterable[str],
        required: bool = False,  # noqa: ARG003
    ):
        todos = await info.context.loaders.todo_by_id.load_many(node_ids)
        return list(map(cls.from_orm, [todo for todo in todos if todo is not None]))

@strawberry.type(name="Todo")
class TodoType(BaseNodeType):
    content: str
    completed: bool
    created_at: datetime
    updated_at: datetime | None

    @classmethod
    def from_orm(cls, todo: Todo) -> Self:
        """Construct a node from an ORM instance."""
        return cls(
            id=todo.id,
            content=todo.content,
            completed=todo.completed,
            created_at=todo.created_at,
            updated_at=todo.updated_at,
        )

    @classmethod
    async def resolve_nodes(  # noqa: ANN206
        cls,
        *,
        info: Info,
        node_ids: Iterable[str],
        required: bool = False,  # noqa: ARG003
    ):
        todos = await info.context.loaders.todo_by_id.load_many(node_ids)
        return list(map(cls.from_orm, [todo for todo in todos if todo is not None]))

Should I be using dataloaders to resolve my nodes here? If so, should I use a separate dataloader when required=False and a separate dataloader when required=True? Or am I completely wrong and should I just use my repository layer directly here?

7 replies

SGStrawberry GraphQL

•Created by Aryan Iyappan on 6/22/2024 in #🤔questions

AioInject errors while overriding resolve_connection method (relay)

I wanted to create my own relay connection class like so: I get this mypy error which shows an error in the method signature:

Signature of "resolve_connection" incompatible with supertype "Connection"Mypyoverride
     Superclass:
         def resolve_connection(cls, nodes: Iterator[T] | Iterable[T] | AsyncIterator[T] | AsyncIterable[T], *, info: Info[Any, Any], before: str | None = ..., after: str | None = ..., first: int | None = ..., last: int | None = ..., **kwargs: Any) -> Awaitable[KeysetConnection[T]] | KeysetConnection[T]
     Subclass:
         def resolve_connection(nodes: Iterator[T] | Iterable[T] | AsyncIterator[T] | AsyncIterable[T], session: AsyncSession, *, info: Info[Context, None], before: str | None = ..., after: str | None = ..., first: int | None = ..., last: int | None = ..., **kwargs: Any) -> Coroutine[Any, Any, KeysetConnection[T]]

Signature of "resolve_connection" incompatible with supertype "Connection"Mypyoverride
     Superclass:
         def resolve_connection(cls, nodes: Iterator[T] | Iterable[T] | AsyncIterator[T] | AsyncIterable[T], *, info: Info[Any, Any], before: str | None = ..., after: str | None = ..., first: int | None = ..., last: int | None = ..., **kwargs: Any) -> Awaitable[KeysetConnection[T]] | KeysetConnection[T]
     Subclass:
         def resolve_connection(nodes: Iterator[T] | Iterable[T] | AsyncIterator[T] | AsyncIterable[T], session: AsyncSession, *, info: Info[Context, None], before: str | None = ..., after: str | None = ..., first: int | None = ..., last: int | None = ..., **kwargs: Any) -> Coroutine[Any, Any, KeysetConnection[T]]

How could this be fixed? I need to get my session within the resolver

12 replies

SGStrawberry GraphQL

•Created by Aryan Iyappan on 11/12/2022 in #🤔questions

descriptions for arguments

Is there any way to add descriptions to arguments currently? I think it's a drawback that we cannot add stuff like deprecated directives and descriptions to arguments just because we use typehints.

@strawberry.field()
def my_field(parent, info, my_arg: str):
        pass

@strawberry.field()
def my_field(parent, info, my_arg: str):
        pass

Instead of this, does python support something like:

@strawberry.field()
def my_field(parent, info, my_arg: GraphQLString(description="", deprecated=True)):
        pass

@strawberry.field()
def my_field(parent, info, my_arg: GraphQLString(description="", deprecated=True)):
        pass

That would be cool

11 replies

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