django使用graphql的实例

from django.db import models

# Create your models here.
class User(models.Model):
 name = models.CharField(max_length=100, verbose_name="博主名字")
 gender = models.CharField(max_length=6, choices=(('male', u'男'), ('female', '女')), default='female',
        verbose_name='性别')
 create_at = models.DateTimeField(auto_now_add=True, verbose_name='创建时间')

class Blog(models.Model):
 title = models.CharField(max_length=100, verbose_name='标题')
 user = models.ForeignKey(User, null=True, blank=True, on_delete=models.SET_NULL, verbose_name='博主名字')
 content = models.TextField(verbose_name='博客内容')
 create_at = models.DateTimeField(auto_now_add=True, verbose_name='创建时间')
 update_at = models.DateTimeField(auto_now=True, verbose_name='更新时间')

#!/usr/bin/env python
# encoding: utf-8

import graphene
from graphene_django.types import DjangoObjectType
from .models import User, Blog

class UserType(DjangoObjectType):
 class Meta:
  model = User

class BlogType(DjangoObjectType):
 class Meta:
  model = Blog

# 定义动作约素输入类型
class UserInput(graphene.InputObjectType):
 name = graphene.String(required=True)
 gender = graphene.String(required=True)

class BlogInput(graphene.InputObjectType):
 title = graphene.String(required=True)
 user = graphene.Int(required=True)
 content = graphene.String(required=True)

# 定义一个创建user的mutation
class CreateUser(graphene.Mutation):
 # api的输入参数
 class Arguments:
  user_data = UserInput(required=True)

 # api的响应参数
 ok = graphene.Boolean()
 user = graphene.Field(UserType)

 # api的相应操作，这里是create
 def mutate(self, info, user_data):
  user = User.objects.create(name=user_data['name'], gender=user_data['gender'])
  ok = True
  return CreateUser(user=user, ok=ok)


# 定义一个创建博客的mutation
class CreateBlog(graphene.Mutation):
 class Arguments:
  blog_data = BlogInput(required=True)

 blog = graphene.Field(BlogType)

 def mutate(self, info, blog_data):
  # 插入到数据库中
  blog = Blog.objects.create(title=blog_data['title'], user_id=blog_data['user'], content=blog_data['content'])
  return CreateBlog(blog=blog)

# 定义一个查询语句
class Query(object):
 all_user = graphene.List(UserType)
 all_blog = graphene.List(BlogType)

 def resolve_all_user(self, info, **kwargs):
  # 查询所有book的逻辑
  return User.objects.all()

 def resolve_all_blog(self, info, **kwargs):
  # 查询所有title的逻辑
  return Blog.objects.all()

import graphene
import book.schema, blog.schema

class Query(blog.schema.Query, graphene.ObjectType):
 # 总的Schema的query入口
 pass

class Mutations(graphene.ObjectType):
 # 总的Schema的mutations入口
 create_user = blog.sc<b style="color:transparent">本文来源gao@!dai!ma.com搞$$代^@码网*</b>hema.CreateUser.Field()
 create_blog = blog.schema.CreateBlog.Field()

schema = graphene.Schema(query=Query, mutation=Mutations)

from django.contrib import admin
from django.urls import path
from graphene_django.views import GraphQLView
from .schema import schema
urlpatterns = [
 path('admin/', admin.site.urls),
 path('graphql/', GraphQLView.as_view(graphiql=True, schema=schema)),
]