graphene/examples/starwars_relay/schema.py
2017-07-12 21:21:16 -07:00

81 lines
2.0 KiB
Python

import graphene
from graphene import relay, resolve_only_args
from .data import create_ship, get_empire, get_faction, get_rebels, get_ship
class Ship(graphene.ObjectType):
'''A ship in the Star Wars saga'''
class Meta:
interfaces = (relay.Node, )
name = graphene.String(description='The name of the ship.')
@classmethod
def get_node(cls, id, context, info):
return get_ship(id)
class ShipConnection(relay.Connection):
class Meta:
node = Ship
class Faction(graphene.ObjectType):
'''A faction in the Star Wars saga'''
class Meta:
interfaces = (relay.Node, )
name = graphene.String(description='The name of the faction.')
ships = relay.ConnectionField(ShipConnection, description='The ships used by the faction.')
@resolve_only_args
def resolve_ships(self, **args):
# Transform the instance ship_ids into real instances
return [get_ship(ship_id) for ship_id in self.ships]
@classmethod
def get_node(cls, id, context, info):
return get_faction(id)
class IntroduceShip(relay.ClientIDMutation):
class Input:
ship_name = graphene.String(required=True)
faction_id = graphene.String(required=True)
ship = graphene.Field(Ship)
faction = graphene.Field(Faction)
@classmethod
def mutate_and_get_payload(cls, input, context, info):
ship_name = input.get('ship_name')
faction_id = input.get('faction_id')
ship = create_ship(ship_name, faction_id)
faction = get_faction(faction_id)
return IntroduceShip(ship=ship, faction=faction)
class Query(graphene.ObjectType):
rebels = graphene.Field(Faction)
empire = graphene.Field(Faction)
node = relay.Node.Field()
@resolve_only_args
def resolve_rebels(self):
return get_rebels()
@resolve_only_args
def resolve_empire(self):
return get_empire()
class Mutation(graphene.ObjectType):
introduce_ship = IntroduceShip.Field()
schema = graphene.Schema(query=Query, mutation=Mutation)