Module: GraphQL::BaseType::HasPossibleTypes

Included in:
InterfaceType, UnionType
Defined in:
lib/graphql/base_type.rb

Constant Summary collapse

DEFAULT_RESOLVE_TYPE =

The default implementation of #resolve_type gets object.class.name and finds a type with the same name

-> (object, ctx) {
  type_name = object.class.name
  ctx.schema.possible_types(self).find {|t| t.name == type_name}
}

Instance Method Summary collapse

Instance Method Details

#legacy_resolve_type(object, ctx) ⇒ Object

If a (deprecated) resolve_type function was provided, call that and warn. Otherwise call schema.resolve_type (the proper behavior)



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# File 'lib/graphql/base_type.rb', line 55

def legacy_resolve_type(object, ctx)
  if @resolve_type_proc
    resolve_type(object, ctx)
  else
    ctx.schema.resolve_type(object, ctx)
  end
end

#resolve_type(object, ctx) ⇒ GraphQL::ObjectType

Return the implementing type for object. The default implementation assumes that there’s a type with the same name as object.class.name. Maybe you’ll need to override this in your own interfaces!

Parameters:

  • the object which needs a type to expose it

Returns:

  • the type which should expose object



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# File 'lib/graphql/base_type.rb', line 70

def resolve_type(object, ctx)
  ensure_defined
  warn_resolve_type_deprecated
  instance_exec(object, ctx, &(@resolve_type_proc || DEFAULT_RESOLVE_TYPE))
end

#resolve_type=(new_proc) ⇒ Object 



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# File 'lib/graphql/base_type.rb', line 83

def resolve_type=(new_proc)
  warn_resolve_type_deprecated
  @resolve_type_proc = new_proc || DEFAULT_RESOLVE_TYPE
end

#warn_resolve_type_deprecated ⇒ Object 



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# File 'lib/graphql/base_type.rb', line 88

def warn_resolve_type_deprecated
  warn("#{self.name}.resolve_type is deprecated; define Schema.resolve_type instead")
end