GraphQL AttributeError：模块“石墨烯”没有属性“英雄”

Question

i am a beginner with Django & GraphQL, i had a problem the at first step, i can not reach to GraphiQL, i had an error

Could not import 'traindjango.schema.schema' for Graphene setting 'SCHEMA'.
AttributeError: module 'graphene' has no attribute 'Heroes'.

traindjango/heroes/schema.py

import graphene
from graphene_django import DjangoObjectType

from .models import Heroes


class HeroesType(DjangoObjectType):
    class Meta:
        model = Heroes


class Query(graphene.ObjectType):
    heroes = graphene.Heroes(HeroesType)

    def resolve_links(self, info, **kwargs):
        return Heroes.objects.all()

traindjango/traindjango/schema.py

import graphene

import heroes.schema


class Query(heroes.schema.Query, graphene.ObjectType):
    pass


schema = graphene.Schema(query=Query)

traindjango/traindjango/settings.py

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'heroes',
    'graphene_django',
]

GRAPHENE = {
    'SCHEMA' : 'traindjango.schema.schema',
}

traindjango/heroes/models.py

from django.db import models

class Heroes(models.Model):
    name  = models.CharField(max_length=100, verbose_name='Name') 
    power = models.IntegerField(default=0)
    city  = models.TextField(max_length=100, verbose_name='City' ,null=True, blank=True)

Could you please help me what i can do it?

Thanx a lot

Answer 1

Instead of

heroes = graphene.Heroes(HeroesType)

You need

heroes = graphene.List(HeroesType)

Heroes is your model, and does not belong to Graphene.

Then you need to rename resolve_links as resolve_heroes

PS Good practice is to name your django modules in the singular, ie Hero, not Heroes. You can set the verbose name for the plural in Meta if it's not just adding an 's'.