Absinthe.Type.Interface (absinthe v1.6.4) View Source
A defined interface type that represent a list of named fields and their arguments.
Fields on an interface have the same rules as fields on an
Absinthe.Type.Object.
If an Absinthe.Type.Object lists an interface in its :interfaces entry,
it guarantees that it defines the same fields and arguments that the
interface does.
Because sometimes it's for the interface to determine the implementing type of a resolved object, you must either:
- Provide a
:resolve_typefunction on the interface - Provide a
:is_type_offunction on each implementing type
interface :named_entity do
field :name, :string
resolve_type fn
%{age: _}, _ -> :person
%{employee_count: _}, _ -> :business
_, _ -> nil
end
end
object :person do
field :name, :string
field :age, :string
interface :named_entity
end
object :business do
field :name, :string
field :employee_count, :integer
interface :named_entity
endLink to this section Summary
Types
:name- The name of the interface type. Should be a TitleCasedbinary. Set automatically.:description- A nice description for introspection.:fields- A map ofAbsinthe.Type.Fieldstructs. SeeAbsinthe.Schema.Notation.field/4and:args- A map ofAbsinthe.Type.Argumentstructs. SeeAbsinthe.Schema.Notation.arg/2.:resolve_type- A function used to determine the implementing type of a resolved object. See alsoAbsinthe.Type.Object's:is_type_of.
The :resolve_type function will be passed two arguments; the object whose type needs to be identified, and the Absinthe.Execution struct providing the full execution context.
Functions
Callback implementation for c:Absinthe.Introspection.TypeKind.kind/0.
Whether the interface (or implementors) are correctly configured to resolve objects.
Link to this section Types
Specs
t() :: %Absinthe.Type.Interface{
__private__: Keyword.t(),
__reference__: Absinthe.Type.Reference.t(),
definition: module(),
description: binary(),
fields: map(),
identifier: atom(),
interfaces: [t()],
name: binary(),
resolve_type: term()
}
:name- The name of the interface type. Should be a TitleCasedbinary. Set automatically.:description- A nice description for introspection.:fields- A map ofAbsinthe.Type.Fieldstructs. SeeAbsinthe.Schema.Notation.field/4and:args- A map ofAbsinthe.Type.Argumentstructs. SeeAbsinthe.Schema.Notation.arg/2.:resolve_type- A function used to determine the implementing type of a resolved object. See alsoAbsinthe.Type.Object's:is_type_of.
The :resolve_type function will be passed two arguments; the object whose type needs to be identified, and the Absinthe.Execution struct providing the full execution context.
The __private__ and :__reference__ keys are for internal use.
Link to this section Functions
Callback implementation for c:Absinthe.Introspection.TypeKind.kind/0.
Specs
type_resolvable?(Absinthe.Schema.t(), t()) :: boolean()
Whether the interface (or implementors) are correctly configured to resolve objects.