Struct NodePreExecutionArguments

pub struct NodePreExecutionArguments { /* private fields */ }

Arguments passed to the authorize_node_pre_execution hook.

Implementations

impl NodePreExecutionArguments

pub fn type_name(&self) -> &str

The name of the node type.

For the following GraphQL schema:

type User @authorized {
    id: Int!
    name: String!
}

type Query {
   user(id: ID!): User
}

The node type name is User.

pub fn metadata<'a, T>(&'a self) -> Result<T, Error>

where T: Deserialize<'a>,

The metadata passed to the @authorized directive. The metadata is serialized as a JSON object. This method will deserialize the metadata into either serde_json::Value or a custom struct.

For the following GraphQL schema:

type User @authorized(metadata: { role: "admin" }) {
    id: Int!
    name: String!
}

type Query {
   user(id: ID!): User
}

When executing a query like:

query {
  user(id: "123") { id }
}

The metadata is {"role": "admin"}.

The metadata can be deserialized into a custom struct:

#[derive(serde::Deserialize)]
#[serde(untagged, rename = "snake_case")]
enum Role {
   Admin,
   User,
}

#[derive(serde::Deserialize)]
struct Metadata {
   role: Role,
}

let arguments: Metadata = arguments.metadata()?;