1）创建schema .py

schema.py

import graphene

class MenuItem(graphene.ObjectType):
    page_slug = graphene.String()
    page_title = graphene.String()
    children = graphene.List(lambda: MenuItem)

class Query(graphene.ObjectType):
    main_menu = graphene.List(MenuItem)

def resolve_main_menu(self, info):
    # Code to retrieve the main menu from the database
    main_menu_data = get_main_menu_data()

    def build_menu(menu_data):
        menu_items = []
        for item in menu_data:
            children = item.pop('children', None)
            menu_item = MenuItem(**item)
            if children:
                menu_item.children = build_menu(children)
            menu_items.append(menu_item)
        return menu_items

    return build_menu(main_menu_data['mainMenu'])

schema = graphene.Schema(query=Query)

网址.py

from django.urls import path
from graphene_django.views import GraphQLView
from .schema import schema

urlpatterns = [
    path('graphql', GraphQLView.as_view(graphiql=True, schema=schema)),
]