Class: GraphQL::Schema::Object

Inherits:
Member
  • Object
show all
Extended by:
Member::AcceptsDefinition, Member::HasFields
Defined in:
lib/graphql/schema/object.rb

Constant Summary

Constants included from Member::HasFields

Member::HasFields::CONFLICT_FIELD_NAMES, Member::HasFields::GRAPHQL_RUBY_KEYWORDS, Member::HasFields::RUBY_KEYWORDS

Constants included from Member::HasDirectives

Member::HasDirectives::NO_DIRECTIVES

Constants included from Member::GraphQLTypeNames

Member::GraphQLTypeNames::Boolean, Member::GraphQLTypeNames::ID, Member::GraphQLTypeNames::Int

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Member::HasFields

add_field, field, field_class, fields, get_field, global_id_field, own_fields

Methods included from Member::CachedGraphQLDefinition

#graphql_definition, #initialize_copy, #type_class

Methods included from Relay::TypeExtensions

#connection_type, #define_connection, #define_edge, #edge_type

Methods included from Member::BaseDSLMethods

#accessible?, #authorized?, #default_graphql_name, #description, #graphql_name, #introspection, #introspection?, #mutation, #name, #overridden_graphql_name, #to_graphql, #visible?

Methods included from Member::BaseDSLMethods::ConfigurationExtension

#inherited

Methods included from Member::TypeSystemHelpers

#kind, #list?, #non_null?, #to_list_type, #to_non_null_type, #to_type_signature

Methods included from Member::Scoped

#scope_items

Methods included from Member::RelayShortcuts

#connection_type, #connection_type_class, #edge_type, #edge_type_class

Methods included from Member::HasPath

#path

Methods included from Member::HasAstNode

#ast_node

Methods included from Member::HasDirectives

#directive, #directives, #remove_directive

Constructor Details

#initialize(object, context) ⇒ Object

Returns a new instance of Object.



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# File 'lib/graphql/schema/object.rb', line 79

def initialize(object, context)
  @object = object
  @context = context
end

Instance Attribute Details

#context ⇒ GraphQL::Query::Context (readonly)

Returns the context instance for this query.

Returns:



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# File 'lib/graphql/schema/object.rb', line 15

def context
  @context
end

#object ⇒ Object (readonly)

Returns the application object this type is wrapping.

Returns:

  • (Object) —

    the application object this type is wrapping



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# File 'lib/graphql/schema/object.rb', line 12

def object
  @object
end

Class Method Details

.authorized_new(object, context) ⇒ GraphQL::Schema::Object, GraphQL::Execution::Lazy

Make a new instance of this type if the auth check passes, otherwise, raise an error.

Probably only the framework should call this method.

This might return a Execution::Lazy if the user-provided .authorized? hook returns some lazy value (like a Promise).

The reason that the auth check is in this wrapper method instead of new is because of how it might return a Promise. It would be weird if .new returned a promise; It would be a headache to try to maintain Promise-y state inside a GraphQL::Schema::Object instance. So, hopefully this wrapper method will do the job.

Parameters:

Returns:

Raises:



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# File 'lib/graphql/schema/object.rb', line 50

def authorized_new(object, context)
  auth_val = context.query.with_error_handling do
    begin
      authorized?(object, context)
    rescue GraphQL::UnauthorizedError => err
      context.schema.unauthorized_object(err)
    end
  end

  context.schema.after_lazy(auth_val) do |is_authorized|
    if is_authorized
      self.new(object, context)
    else
      # It failed the authorization check, so go to the schema's authorized object hook
      err = GraphQL::UnauthorizedError.new(object: object, type: self, context: context)
      # If a new value was returned, wrap that instead of the original value
      begin
        new_obj = context.schema.unauthorized_object(err)
        if new_obj
          self.new(new_obj, context)
        else
          nil
        end
      end
    end
  end
end

.fields ⇒ Hash<String => GraphQL::Schema::Field>

Returns All of this object’s fields, indexed by name.

Returns:

See Also:



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# File 'lib/graphql/schema/object.rb', line 163

def fields
  all_fields = super
  interfaces.each do |int|
    # Include legacy-style interfaces, too
    if int.is_a?(GraphQL::InterfaceType)
      int_f = {}
      int.fields.each do |name, legacy_field|
        int_f[name] = field_class.from_options(name, field: legacy_field)
      end
      all_fields = int_f.merge(all_fields)
    end
  end
  all_fields
end

.implements(*new_interfaces, **options) ⇒ Object 



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# File 'lib/graphql/schema/object.rb', line 92

def implements(*new_interfaces, **options)
  new_memberships = []
  new_interfaces.each do |int|
    if int.is_a?(Module)
      unless int.include?(GraphQL::Schema::Interface)
        raise "#{int} cannot be implemented since it's not a GraphQL Interface. Use `include` for plain Ruby modules."
      end

      new_memberships << int.type_membership_class.new(int, self, **options)

      # Include the methods here,
      # `.fields` will use the inheritance chain
      # to find inherited fields
      include(int)
    elsif int.is_a?(GraphQL::InterfaceType)
      new_memberships << int.type_membership_class.new(int, self, **options)
    elsif int.is_a?(String) || int.is_a?(GraphQL::Schema::LateBoundType)
      if options.any?
        raise ArgumentError, "`implements(...)` doesn't support options with late-loaded types yet. Remove #{options} and open an issue to request this feature."
      end
      new_memberships << int
    else
      raise ArgumentError, "Unexpected interface definition (expected module): #{int} (#{int.class})"
    end
  end

  # Remove any interfaces which are being replaced (late-bound types are updated in place this way)
  own_interface_type_memberships.reject! { |old_i_m|
    old_int_type = old_i_m.respond_to?(:abstract_type) ? old_i_m.abstract_type : old_i_m
    old_name = Schema::Member::BuildType.to_type_name(old_int_type)

    new_memberships.any? { |new_i_m|
      new_int_type = new_i_m.respond_to?(:abstract_type) ? new_i_m.abstract_type : new_i_m
      new_name = Schema::Member::BuildType.to_type_name(new_int_type)

      new_name == old_name
    }
  }
  own_interface_type_memberships.concat(new_memberships)
end

.inherited(child_class) ⇒ Object

Set up a type-specific invalid null error to use when this object’s non-null fields wrongly return nil. It should help with debugging and bug tracker integrations.



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# File 'lib/graphql/schema/object.rb', line 87

def inherited(child_class)
  child_class.const_set(:InvalidNullError, GraphQL::InvalidNullError.subclass_for(child_class))
  super
end

.interface_type_memberships ⇒ Object 



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# File 'lib/graphql/schema/object.rb', line 137

def interface_type_memberships
  own_interface_type_memberships + (superclass.respond_to?(:interface_type_memberships) ? superclass.interface_type_memberships : [])
end

.interfaces(context = GraphQL::Query::NullContext) ⇒ Object

param context [Query::Context] If omitted, skip filtering.



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# File 'lib/graphql/schema/object.rb', line 142

def interfaces(context = GraphQL::Query::NullContext)
  visible_interfaces = []
  unfiltered = context == GraphQL::Query::NullContext
  own_interface_type_memberships.each do |type_membership|
    # During initialization, `type_memberships` can hold late-bound types
    case type_membership
    when String, Schema::LateBoundType
      visible_interfaces << type_membership
    when Schema::TypeMembership
      if unfiltered || type_membership.visible?(context)
        visible_interfaces << type_membership.abstract_type
      end
    else
      raise "Invariant: Unexpected type_membership #{type_membership.class}: #{type_membership.inspect}"
    end
  end
  visible_interfaces + (superclass <= GraphQL::Schema::Object ? superclass.interfaces(context) : [])
end

.kind ⇒ Object 



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# File 'lib/graphql/schema/object.rb', line 197

def kind
  GraphQL::TypeKinds::OBJECT
end

.own_interface_type_memberships ⇒ Object 



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# File 'lib/graphql/schema/object.rb', line 133

def own_interface_type_memberships
  @own_interface_type_memberships ||= []
end

.to_graphql ⇒ GraphQL::ObjectType

Returns:



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# File 'lib/graphql/schema/object.rb', line 179

def to_graphql
  obj_type = GraphQL::ObjectType.new
  obj_type.name = graphql_name
  obj_type.description = description
  obj_type.structural_interface_type_memberships = interface_type_memberships
  obj_type.introspection = introspection
  obj_type.mutation = mutation
  obj_type.ast_node = ast_node
  fields.each do |field_name, field_inst|
    field_defn = field_inst.to_graphql
    obj_type.fields[field_defn.name] = field_defn
  end

  obj_type.metadata[:type_class] = self

  obj_type
end

Instance Method Details

#dataloader ⇒ GraphQL::Dataloader

Returns:



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# File 'lib/graphql/schema/object.rb', line 18

def dataloader
  context.dataloader
end

#raw_value(obj) ⇒ Object

Call this in a field method to return a value that should be returned to the client without any further handling by GraphQL.



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# File 'lib/graphql/schema/object.rb', line 24

def raw_value(obj)
  GraphQL::Execution::Interpreter::RawValue.new(obj)
end