Getting started¶
What is GraphQL?¶
For an introduction to GraphQL and an overview of its concepts, please refer to the official introduction.
Let’s build a basic GraphQL schema from scratch.
Requirements¶
- Python (2.7, 3.2, 3.3, 3.4, 3.5, pypy)
- Graphene (1.0)
Project setup¶
pip install "graphene>=1.0"
Creating a basic Schema¶
A GraphQL schema describes your data model, and provides a GraphQL server with an associated set of resolve methods that know how to fetch data.
We are going to create a very simple schema, with a Query
with only
one field: hello
and an input name. And when we query it, it should return "Hello {name}"
.
import graphene
class Query(graphene.ObjectType):
hello = graphene.String(name=graphene.Argument(graphene.String, default_value="stranger"))
def resolve_hello(self, args, context, info):
return 'Hello ' + args['name']
schema = graphene.Schema(query=Query)
Querying¶
Then we can start querying our schema:
result = schema.execute('{ hello }')
print result.data['hello'] # "Hello stranger"
Congrats! You got your first graphene schema working!