Absinthe.Introspection (absinthe v1.6.0) View Source

Introspection support.

You can introspect your schema using __schema, __type, and __typename, as described in the specification.

Examples

Seeing the names of the types in the schema:

"""
{
  __schema {
    types {
      name
    }
  }
}
"""
|> Absinthe.run(MyApp.Schema)
{:ok,
  %{data: %{
    "__schema" => %{
      "types" => [
        %{"name" => "Boolean"},
        %{"name" => "Float"},
        %{"name" => "ID"},
        %{"name" => "Int"},
        %{"name" => "String"},
        ...
      ]
    }
  }}
}

Getting the name of the queried type:

"""
{
  profile {
    name
    __typename
  }
}
"""
|> Absinthe.run(MyApp.Schema)
{:ok,
  %{data: %{
    "profile" => %{
      "name" => "Joe",
      "__typename" => "Person"
    }
  }}
}

Getting the name of the fields for a named type:

"""
{
  __type(name: "Person") {
    fields {
      name
      type {
        kind
        name
      }
    }
  }
}
"""
|> Absinthe.run(MyApp.Schema)
{:ok,
  %{data: %{
    "__type" => %{
      "fields" => [
        %{
          "name" => "name",
          "type" => %{"kind" => "SCALAR", "name" => "String"}
        },
        %{
          "name" => "age",
          "type" => %{"kind" => "SCALAR", "name" => "Int"}
        },
      ]
    }
  }}
}

(Note that you may have to nest several depths of type/ofType, as type information includes any wrapping layers of List and/or NonNull.)