@hasOne

One to one relationship

For a separate add use

/* ... */
const {
  HasOneDirective,
  HasOneTypeDefs
} = require('apollo-server-adonis-directives-pack/src/directives/relationship/HasOne')

makeExecutableSchema({ 
  /* ... */ 
  typeDefs: [ HasOneTypeDefs, /* ... */ ],
  schemaDirectives: { HasOneDirective, /* ... */} 
})

Definition

HasOneTypeDefs

directive @hasOne(
  # By default, the model will be calculated from the name
  # of the returned "type" with the prefix 'App/Model/'
  model: String,
  # By default, the column will be calculated from the name 
  # of the "type" with the postfix '_id'
  ownerColumn: String,
  # By default localColumn = 'id'
  localColumn:String) on FIELD_DEFINITION

Example

type User {
    id: ID!
    name: String
    token: Token @hasOne #ownerColumn: user_id
}

type Token {
    hash: String
    user_id: Int!
}

This directive uses a DataLoader but does not cache the results.