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61 lines
2.7 KiB
ReStructuredText
61 lines
2.7 KiB
ReStructuredText
.. _modelresources:
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Getting Started - Model Resources
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---------------------------------
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.. note::
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A live sandbox instance of this API is available:
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http://api.django-rest-framework.org/model-resource-example/
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You can browse the API using a web browser, or from the command line::
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curl -X GET http://api.django-rest-framework.org/resource-example/ -H 'Accept: text/plain'
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Often you'll want parts of your API to directly map to existing django models. Django REST framework handles this nicely for you in a couple of ways:
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#. It automatically provides suitable create/read/update/delete methods for your resources.
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#. Input validation occurs automatically, by using appropriate `ModelForms <http://docs.djangoproject.com/en/dev/topics/forms/modelforms/>`_.
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We'll start of defining two resources in our urlconf again.
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``urls.py``
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.. include:: ../../examples/modelresourceexample/urls.py
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:literal:
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Here's the models we're working from in this example. It's usually a good idea to make sure you provide the :func:`get_absolute_url()` `permalink <http://docs.djangoproject.com/en/dev/ref/models/instances/#get-absolute-url>`_ for all models you want to expose via the API.
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``models.py``
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.. include:: ../../examples/modelresourceexample/models.py
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:literal:
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Now that we've got some models and a urlconf, there's very little code to write. We'll create a :class:`.ModelResource` to map to instances of our models, and a top level :class:`.RootModelResource` to list the existing instances and to create new instances.
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``views.py``
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.. include:: ../../examples/modelresourceexample/views.py
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:literal:
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And we're done. We've now got a fully browseable API, which supports multiple input and output media types, and has all the nice automatic field validation that Django gives us for free.
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We can visit the API in our browser:
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* http://api.django-rest-framework.org/model-resource-example/
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Or access it from the command line using curl:
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.. code-block:: bash
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# Demonstrates API's input validation using form input
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bash: curl -X POST --data 'foo=true' http://api.django-rest-framework.org/model-resource-example/
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{"detail": {"bar": ["This field is required."], "baz": ["This field is required."]}}
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# Demonstrates API's input validation using JSON input
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bash: curl -X POST -H 'Content-Type: application/json' --data-binary '{"foo":true}' http://api.django-rest-framework.org/model-resource-example/
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{"detail": {"bar": ["This field is required."], "baz": ["This field is required."]}}
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We could also have added the handler methods :meth:`.Resource.get()`, :meth:`.Resource.post()` etc... seen in the last example, but Django REST framework provides nice default implementations for us that do exactly what we'd expect them to.
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