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58 lines
1.3 KiB
ReStructuredText
58 lines
1.3 KiB
ReStructuredText
Getting started
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===============
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What is GraphQL?
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----------------
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For an introduction to GraphQL and an overview of its concepts, please refer
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to `the official introduction <http://graphql.org/learn/>`_.
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Let’s build a basic GraphQL schema from scratch.
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Requirements
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------------
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- Python (2.7, 3.4, 3.5, 3.6, pypy)
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- Graphene (2.0)
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Project setup
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-------------
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.. code:: bash
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pip install "graphene>=2.0"
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Creating a basic Schema
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-----------------------
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A GraphQL schema describes your data model, and provides a GraphQL
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server with an associated set of resolve methods that know how to fetch
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data.
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We are going to create a very simple schema, with a ``Query`` with only
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one field: ``hello`` and an input name. And when we query it, it should return ``"Hello {name}"``.
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.. code:: python
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import graphene
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class Query(graphene.ObjectType):
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hello = graphene.String(name=graphene.String(default_value="stranger"))
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def resolve_hello(self, info, name):
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return 'Hello ' + name
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schema = graphene.Schema(query=Query)
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Querying
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--------
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Then we can start querying our schema:
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.. code:: python
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result = schema.execute('{ hello }')
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print(result.data['hello']) # "Hello stranger"
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Congrats! You got your first graphene schema working!
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