Module: GraphQL::Schema::Loader

Extended by:
Loader
Included in:
Loader
Defined in:
lib/graphql/schema/loader.rb

Overview

You can use the result of Introspection::INTROSPECTION_QUERY to make a schema. This schema is missing some important details like resolve functions, but it does include the full type system, so you can use it to validate queries.

Constant Summary collapse

NullResolveType =
->(obj, ctx) {
  raise(NotImplementedError, "This schema was loaded from string, so it can't resolve types for objects")
}

Instance Method Summary collapse

Instance Method Details

#load(introspection_result) ⇒ GraphQL::Schema

Deprecated.

Create schema with the result of an introspection query.

Parameters:

Returns:


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# File 'lib/graphql/schema/loader.rb', line 14

def load(introspection_result)
  schema = introspection_result.fetch("data").fetch("__schema")

  types = {}
  type_resolver = ->(type) { -> { resolve_type(types, type) } }

  schema.fetch("types").each do |type|
    next if type.fetch("name").start_with?("__")
    type_object = define_type(type, type_resolver)
    types[type_object.name] = type_object
  end

  kargs = { orphan_types: types.values, resolve_type: NullResolveType }
  [:query, :mutation, :subscription].each do |root|
    type = schema["#{root}Type"]
    kargs[root] = types.fetch(type.fetch("name")) if type
  end

  Schema.define(**kargs)
end