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Contents

# frozen_string_literal: true
module GraphQL
  # An Interface contains a collection of types which implement some of the same fields.
  #
  # Interfaces can have fields, defined with `field`, just like an object type.
  #
  # Objects which implement this field _inherit_ field definitions from the interface.
  # An object type can override the inherited definition by redefining that field.
  #
  # @example An interface with three fields
  #   DeviceInterface = GraphQL::InterfaceType.define do
  #     name("Device")
  #     description("Hardware devices for computing")
  #
  #     field :ram, types.String
  #     field :processor, ProcessorType
  #     field :release_year, types.Int
  #   end
  #
  # @example Implementing an interface with an object type
  #   Laptoptype = GraphQL::ObjectType.define do
  #     interfaces [DeviceInterface]
  #   end
  #
  class InterfaceType < GraphQL::BaseType
    accepts_definitions :fields, field: GraphQL::Define::AssignObjectField

    attr_accessor :fields
    ensure_defined :fields

    def initialize
      super
      @fields = {}
    end

    def initialize_copy(other)
      super
      @fields = other.fields.dup
    end

    def kind
      GraphQL::TypeKinds::INTERFACE
    end

    # @return [GraphQL::Field] The defined field for `field_name`
    def get_field(field_name)
      fields[field_name]
    end

    # These fields don't have instrumenation applied
    # @see [Schema#get_fields] Get fields with instrumentation
    # @return [Array<GraphQL::Field>] All fields on this type
    def all_fields
      fields.values
    end
  end
end

Version data entries

12 entries across 12 versions & 1 rubygems

Version Path
graphql-1.6.4 lib/graphql/interface_type.rb
graphql-1.5.15 lib/graphql/interface_type.rb
graphql-1.6.3 lib/graphql/interface_type.rb
graphql-1.6.2 lib/graphql/interface_type.rb
graphql-1.6.1 lib/graphql/interface_type.rb
graphql-1.6.0 lib/graphql/interface_type.rb
graphql-1.5.14 lib/graphql/interface_type.rb
graphql-1.5.13 lib/graphql/interface_type.rb
graphql-1.5.12 lib/graphql/interface_type.rb
graphql-1.5.11 lib/graphql/interface_type.rb
graphql-1.5.10 lib/graphql/interface_type.rb
graphql-1.5.9 lib/graphql/interface_type.rb