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Django GraphQL with Graphene

Priya Sharma Jan 2026
2 tabs 
import graphene
from graphene_django import DjangoObjectType
from blog.models import Post, Comment


class PostType(DjangoObjectType):
    class Meta:
        model = Post
        fields = ('id', 'title', 'content', 'author', 'published_at')


class CommentType(DjangoObjectType):
    class Meta:
        model = Comment
        fields = ('id', 'text', 'author', 'post', 'created_at')


class Query(graphene.ObjectType):
    all_posts = graphene.List(PostType)
    post = graphene.Field(PostType, id=graphene.Int())

    def resolve_all_posts(self, info):
        return Post.objects.filter(status='published')

    def resolve_post(self, info, id):
        return Post.objects.get(pk=id)


class CreatePost(graphene.Mutation):
    class Arguments:
        title = graphene.String(required=True)
        content = graphene.String(required=True)

    post = graphene.Field(PostType)

    def mutate(self, info, title, content):
        post = Post.objects.create(
            title=title,
            content=content,
            author=info.context.user
        )
        return CreatePost(post=post)


class Mutation(graphene.ObjectType):
    create_post = CreatePost.Field()


schema = graphene.Schema(query=Query, mutation=Mutation)
2 files · python Explain with highlit

Graphene brings GraphQL to Django. I define types mapping to models and create resolvers for queries and mutations. Clients request exactly the data they need, reducing over-fetching. I use DjangoObjectType for automatic schema generation from models. For complex queries, custom resolvers fetch optimized data. GraphQL introspection provides automatic documentation. DataLoader prevents N+1 queries. For modern frontends or mobile apps, GraphQL offers flexibility traditional REST can't match. I expose GraphQL at /graphql endpoint.

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